专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5521387A Radiation detector employing solid-state scintillator material and preparation methods therefor 失效
标题翻译：采用固态闪烁体材料的辐射探测器及其制备方法
公开(公告)号：US5521387A
公开(公告)日：1996-05-28
申请号：US649332
申请日：1991-02-01
申请人： Robert J. Riedner , Robert J. Lyons , Dominic A. Cusano , Charles D. Greskovich
发明人： Robert J. Riedner , Robert J. Lyons , Dominic A. Cusano , Charles D. Greskovich
IPC分类号： G01T1/20 , C04B35/50 , C04B35/505 , C04B35/645 , C09K11/00 , C09K11/77 , G01T1/164 , G01T1/202 , H01R13/52 , H04N7/04 , C09K11/78
CPC分类号： G01T1/202 , C04B35/50 , C04B35/505 , C04B35/6455 , C09K11/7769 , G01T1/1644 , G01T1/2023 , H04N7/04 , H01R13/5205
摘要： A polycrystalline ceramic scintillator exhibiting reduced afterglow includes between about 5 and 50 mole percent Gd.sub.2 O.sub.3, between about 0.02 and 12 mole percent of either Eu.sub.2 O.sub.3 or Nd.sub.2 O.sub.3 as a rare earth activator oxide, and between about 0.003 and 0.5 mole percent of either Pr.sub.2 O.sub.3 and Tb.sub.2 O.sub.3 as an afterglow reducer. The remainder of the scintillator composition is Y.sub.2 O.sub.3. The resulting scintillator is especially useful for a radiation detector of the type having a plurality of radiation receiving channels. A scintillator body is disposed in each channel so that radiation being received therein is incident on the scintillator body and causes the body to convert the incident radiation to light energy of a predetermined wavelength. The radiation detector also includes means for converting the light energy from the scintillator into electrical signals which are proportional to the amount of radiation incident on the scintillator body. Methods for preparing the scintillator of the present invention include sintering, sintering combined with gas hot isostatic pressing, and vacuum hot pressing.
摘要翻译：显示减少的余辉的多晶陶瓷闪烁体包括约5至50摩尔％的Gd 2 O 3，约0.02至12摩尔％的作为稀土活化剂氧化物的Eu 2 O 3或Nd 2 O 3和约0.003至0.5摩尔％的Pr 2 O 3和Tb 2 O 3作为余辉减速机。闪烁体组合物的其余部分是Y 2 O 3。所得到的闪烁体对于具有多个辐射接收通道的类型的辐射检测器特别有用。在每个通道中设置闪烁体，使得其中接收的辐射入射到闪烁器体上，并且使得主体将入射的辐射转换成预定波长的光能。辐射检测器还包括用于将来自闪烁体的光能转换成与入射到闪烁体上的辐射量成比例的电信号的装置。制备本发明的闪烁体的方法包括烧结，烧结结合气体热等静压和真空热压。

2. 发明授权

US5057692A High speed, radiation tolerant, CT scintillator system employing garnet structure scintillators 失效
标题翻译：高速，耐辐射，采用石榴石结构闪烁体的CT闪烁体系统
公开(公告)号：US5057692A
公开(公告)日：1991-10-15
申请号：US547007
申请日：1990-06-29
申请人： Charles D. Greskovich , William P. Minnear , Joseph P. Chernoch , David M. Hoffman , Robert J. Riedner
发明人： Charles D. Greskovich , William P. Minnear , Joseph P. Chernoch , David M. Hoffman , Robert J. Riedner
IPC分类号： C09K11/00 , C09K11/80 , G01T1/202
CPC分类号： G01T1/2023 , C09K11/7708 , C09K11/7774 , C09K11/7776 , C30B29/28 , C30B15/00
摘要： Selected scintillator materials provided in transparent block form for use in systems such as CT scanning systems employ a garnet host material for an activator ion which provides the desired luminescence. The garnet host material preferably includes gadolinium as one of its components in order to provide a transparent host material in bar form which has a high x-ray stopping power (where the radiation to be detected is x-ray radiation). Chromium, cerium and neodymium are preferred activator materials.

3. 发明授权

US06245184B1 Method of fabricating scintillators for computed tomograph system 失效
标题翻译：计算机断层扫描系统制造闪烁体的方法
公开(公告)号：US06245184B1
公开(公告)日：2001-06-12
申请号：US08977441
申请日：1997-11-26
申请人： Robert J. Riedner , Matthew Schedler
发明人： Robert J. Riedner , Matthew Schedler
IPC分类号： B32B3118
CPC分类号： G01T1/2002 , G01T1/202 , Y10T156/1052 , Y10T156/1067 , Y10T156/1961
摘要： A method of fabricating scintillators using a inside diameter saw is described. The inner diameter saw includes a blade having a diamond coated inner circumference cutting edge. In one embodiment, a plurality of scintillators are stacked and cut with the ID saw to form a plurality of first bars. The first bars are placed in a fixture creating a gap which is filled with a cast reflector material. The first bars are then cut with the ID saw at a 90 degree angle to the pieces creating second bars. The second bars are placed in a fixture and spaced to create second gaps similar to the first gaps. The second gaps are filled similar to the first gaps with a cast reflector material forming scintillator array. The described method minimizes the number of handling operations, therefore saving time.
摘要翻译：描述了使用内径锯制造闪烁体的方法。内径锯包括具有金刚石涂层的内周切削刃的刀片。在一个实施例中，多个闪烁体用ID锯堆叠并切割以形成多个第一条。将第一条杆放置在夹具中，产生填充有铸造反射器材料的间隙。然后，第一个条被切割成ID锯与制造第二条的件成90度角。将第二杆放置在夹具中并间隔开以产生类似于第一间隙的第二间隙。第二间隙与形成闪烁体阵列的浇铸反射体材料的第一间隙相似。所描述的方法使处理操作的数量最小化，从而节省时间。

4. 发明授权

US4288246A Separation of aluminum from articles composed of aluminum bonded to ferrous metal 失效
标题翻译：将铝与粘合到黑色金属上的铝组成的铝分离
公开(公告)号：US4288246A
公开(公告)日：1981-09-08
申请号：US106554
申请日：1979-12-26
申请人： Thomas J. Banski , Robert J. Riedner
发明人： Thomas J. Banski , Robert J. Riedner
IPC分类号： C22B7/00 , C22B21/00 , C22B21/06
CPC分类号： C22B21/0092 , C22B7/004 , Y02P10/218
摘要： The method is effective for separating substantially all of the aluminum from an article composed of an aluminum part bonded to a ferrous metal part. The article, such as a die cast aluminum engine cylinder block including one or more cast iron cylinder sleeves, is immersed in a molten salt bath maintained at a temperature above the melting point of the aluminum and retained in the bath a sufficient time for all the aluminum to melt and flow away from the cylinder sleeve, while maintaining the cylinder sleeve out of contact with molten aluminum accumulating in the bath. The resulting substantially aluminum-free sleeve is removed from the bath and residual salt on the exposed surfaces is removed, such as by washing with a hot detergent solution and rinsing with hot water. If the cylinder sleeve is acceptable for reuse, the salt bath is maintained at a temperature below about 1340.degree. F. in order to prevent deterioration of the metallurgical properties of the sleeve.
摘要翻译：该方法对于从与结合到黑色金属部件的铝部件组成的制品基本上分离所有的铝是有效的。将包括一个或多个铸铁气缸套的压铸铝发动机气缸体的物品浸入保持在高于铝的熔点的温度的熔盐浴中，并保留在浴中足够的时间铝熔化并远离气缸套，同时保持气缸套与积聚在浴中的熔融铝不接触。将所得到的基本上无铝的套管从浴中除去，并且去除暴露表面上的残留盐，例如通过用热的洗涤剂溶液洗涤并用热水冲洗。如果气缸套筒可以重复使用，则将盐浴保持在低于约1340°F的温度，以防止套筒的冶金特性的恶化。

5. 发明授权

US06344649B2 Scintillator for a multi-slice computed tomograph system 失效
标题翻译：用于多层计算机断层扫描系统的闪烁体
公开(公告)号：US06344649B2
公开(公告)日：2002-02-05
申请号：US08977439
申请日：1997-11-26
申请人： Robert J. Riedner , Erdogan O. Gurmen , David M. Hoffman , August O. Englert , Timothy J. Sporer , Matthew R. Schedler
发明人： Robert J. Riedner , Erdogan O. Gurmen , David M. Hoffman , August O. Englert , Timothy J. Sporer , Matthew R. Schedler
IPC分类号： G01T120
CPC分类号： G01N23/04 , G01T1/2002 , G01T1/202
摘要： Apparatus and methods for fabricating scintillators for use in a CT systems are described. Adjacent scintillator elements are separated by gaps filled with a composition of white diffuse reflective material, a light absorber, and a castable polymer. The composition increases the strength of the signal to the photodiode by minimizing the amount of light that is lost by the scintillator elements. Additionally, the light absorber minimizes the amount of light transferred between adjacent scintillator elements to limit cross-talk. In addition, the outer edges of the scintillator may have a lower amount of light absorber to compensate for the light lost from the periphery.
摘要翻译：描述了用于制造用于CT系统的闪烁体的装置和方法。相邻的闪烁体元件由填充有白色漫反射材料，光吸收剂和可浇注聚合物的组合物的间隙分开。组合物通过使闪烁体元件损失的光量最小化来增加信号对光电二极管的强度。另外，光吸收器最小化在相邻的闪烁体元件之间传输的光的量以限制串扰。此外，闪烁器的外边缘可以具有较少量的光吸收器，以补偿从周边损失的光。

6. 发明授权

US5484750A Transparent polycrystalline garnets 失效
标题翻译：透明多晶石榴石
公开(公告)号：US5484750A
公开(公告)日：1996-01-16
申请号：US288660
申请日：1994-08-10
申请人： Charles D. Greskovich , William P. Minnear , Chester R. O'Clair , Erdogan O. Gurmen , Robert J. Riedner
发明人： Charles D. Greskovich , William P. Minnear , Chester R. O'Clair , Erdogan O. Gurmen , Robert J. Riedner
IPC分类号： C01G37/00 , C01G15/00 , C04B35/50 , C04B35/645 , C09K11/77 , G01T1/202 , C04B35/115 , C04B35/44
CPC分类号： C04B35/01 , C01G15/00 , C04B35/50 , C04B35/6455 , C09K11/7701 , C09K11/7708 , C04B2235/3224 , C04B2235/3229 , C04B2235/3241 , C04B2235/3286 , C04B2235/449 , C04B2235/604 , C04B2235/608 , C04B2235/6562 , C04B2235/6587 , C04B2235/661 , C04B2235/662 , C04B2235/762 , C04B2235/764 , C04B2235/77 , C04B2235/81 , C04B2235/9653
摘要： Transparent, polycrystalline garnet bodies having desirable properties for use as laser material, luminescent x-ray scintillator materials and other uses are produced by mixing a chloride source solution of the desired cations with a basic ammonium solution to produce a precipitate having a substantially uniform composition which can be further processed to provide the desired transparent body. This precipitate is separated from the solution, dried, thermally decomposed at a temperature in the range from 700.degree. to 1,000.degree. C., pressed to form a compact, isostatically pressed at up to 60,000 psi to provide a green, unsintered compact having a density in the vicinity of 55% of theoretic density. That green compact is then sintered in oxygen at a temperature between 1,400.degree. and 1,700.degree. C. to produce the desired transparent body. Alternatively, the compact may be sintered in oxygen at temperatures in the range from about 1,400.degree. to about 1,600.degree. C. to a closed pore stage and then hot isostatically pressed at high pressure to provide the desired transparent body.
摘要翻译：通过将所需阳离子的氯化物源溶液与碱性铵溶液混合以产生具有基本上均匀组成的沉淀物来制备具有用作激光材料，发光x射线闪烁体材料和其它用途的所需性质的透明多晶石榴石体，可以进一步处理以提供所需的透明体。将该沉淀物从溶液中分离出来，干燥，在700℃至1000℃的温度下热分解，压制以在高达60,000psi下均压成型，以提供具有密度的绿色未烧结压块在理论密度的55％附近。然后将该压坯在氧气中在1400至1700℃的温度下烧结以产生所需的透明体。或者，压块可以在氧气中在约1400至约1600℃的温度下烧结到闭孔阶段，然后在高压下热等静压以提供所需的透明体。

7. 发明授权

US4783596A Solid state scintillator and treatment therefor 失效
标题翻译：固态闪烁体及其处理方法
公开(公告)号：US4783596A
公开(公告)日：1988-11-08
申请号：US59426
申请日：1987-06-08
申请人： Robert J. Riedner , Erdogan O. Gurmen , Charles D. Greskovich , Dominic A. Cusano
发明人： Robert J. Riedner , Erdogan O. Gurmen , Charles D. Greskovich , Dominic A. Cusano
IPC分类号： C09K9/00 , C04B35/50 , C04B35/505 , C09K11/00 , C09K11/77 , C09K11/78 , G01T1/164 , G01T1/20 , G01T1/202 , G21K4/00
CPC分类号： G21K4/00 , C04B35/50 , C04B35/505 , C09K11/7769 , G01T1/1644
摘要： A polycrystalline ceramic scintillator is disclosed for radiographic applications which has received a controlled oxidation anneal to reduce radiation damage otherwise occuring when said scintillator is exposed to X radiation during conversion of said X radiation to the display image. The particular ceramic material treated in said manner comprises a densely sintered rare earth doped gadolinia containing metal oxide having a cubic crystal structure which has been annealed after sintering in a controlled oxygen containing atmosphere. A preferred ceramic composition comprises from about 5 mole percent up to about 50 mole percent Gd.sub.2 O.sub.3, between about 0.5 mole percent and 12 mole percent of a rare earth activator oxide selected from the group consisting of Eu.sub.2 O.sub.3 and Nd.sub.2 O.sub.3, and between about 0.0001 and 0.5 mole percent of at least one afterglow reducer selected from the group consisting of Pr.sub.2 O.sub.3 and Tb.sub.2 O.sub.3, and the remainder of said composition being Y.sub.2 O.sub.3. A treatment to produce said improved x-ray conversion medium is also disclosed along with radiographic imaging systems and methods employing said improved x-ray image conversion medium.

8. 发明授权

US06448566B1 Scintillator arrays for radiation detectors and methods for making same 失效
标题翻译：用于辐射探测器的闪烁体阵列及其制造方法
公开(公告)号：US06448566B1
公开(公告)日：2002-09-10
申请号：US09681301
申请日：2001-03-15
申请人： Robert J. Riedner , David M. Hoffman , Richard J. Ruzga , Eti Ganin
发明人： Robert J. Riedner , David M. Hoffman , Richard J. Ruzga , Eti Ganin
IPC分类号： G01T124
CPC分类号： G01T1/202
摘要： To provide simpler, more efficient methods for making scintillator arrays, one embodiment of the present invention is a method for making a scintillator array. The method includes extruding a mixture of a scintillator powder and a binder into rods; laminating the extruded rods with a sinterable reflector material; and sintering the laminated rods and reflector material into a scintillator block. Scintillator array embodiments of the present invention are useful in many types of pixelated radiation detectors, such as those used in computed tomography systems.
摘要翻译：为了提供更简单，更有效的制造闪烁体阵列的方法，本发明的一个实施例是制造闪烁体阵列的方法。该方法包括将闪烁体粉末和粘合剂的混合物挤出到棒中; 用可烧结的反射器材料层压挤出的棒; 并将层压棒和反射体材料烧结成闪烁体块。本发明的闪烁体阵列实施例可用于许多类型的像素化辐射检测器，例如在计算机断层摄影系统中使用的那些。

9. 发明授权

US5013696A Preparation of high uniformity polycrystalline ceramics by presintering, hot isostatic pressing and sintering and the resulting ceramic 失效
标题翻译：通过预烧，热等静压和烧结以及所得陶瓷制备高均匀性多晶陶瓷
公开(公告)号：US5013696A
公开(公告)日：1991-05-07
申请号：US412237
申请日：1989-09-25
申请人： Charles D. Greskovich , William P. Minnear , Milivoj K. Brun , Robert J. Riedner
发明人： Charles D. Greskovich , William P. Minnear , Milivoj K. Brun , Robert J. Riedner
IPC分类号： C04B35/115 , C04B35/50 , C04B35/505 , C04B35/645
CPC分类号： C04B35/505 , C04B35/115 , C04B35/50 , C04B35/6455
摘要： Polycrystalline ceramic bodies having uniform transparent optical characteristics are produced by providing a green compact, presintering that compact at a temperature in the range from about 1,350.degree. C. to about 1,650.degree. C. until the closed porosity stage is reached, hot isostatic pressing the presintered compact to collapse substantially all pores disposed at grain boundaries and resintering the hot isostatically pressed compact at a temperature in the range from 1,700.degree. C.-1,950.degree. C. to cause grain growth under conditions in which pores, within those grains which are consumed by the growth of other grains, collapse as the grain boundary of the growing grain passes through the location of the pore in the smaller grain being consumed.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式