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1. 发明授权

US4670243A Method of precipitating metal titanate powders 失效
标题翻译：沉淀金属钛酸盐粉末的方法
公开(公告)号：US4670243A
公开(公告)日：1987-06-02
申请号：US880193
申请日：1986-06-30
申请人： James M. Wilson , Dana L. Coller , Subramaniam Venkataramani
发明人： James M. Wilson , Dana L. Coller , Subramaniam Venkataramani
IPC分类号： C01G23/00
CPC分类号： C01G23/006 , C01P2002/72 , C01P2002/76 , C01P2002/88 , C01P2004/03 , C01P2004/62 , C01P2006/12 , C01P2006/36
摘要： A titanium acylate solution is produced by adding glacial acetic acid to tetra-isopropyl titanate. Distilled water is then added until the solution clears, and a high grade alkaline-earth metal carbonate, such as BaCO.sub.3, SrCO.sub.3 or CaCO.sub.3, or a combination thereof, is added and agitated until the earth-metal dissolves and the solution again becomes clear. An alkaline hydroxide, such as NaOH, is added until the pH of the solution reaches 13 or 10 above, and causes crystals of an earth-metal titanate to form in the solution. The solution is thereafter filtered to produce an alkaline-earth metal titanate filter cake which is then dried and washed to produce the desired powder. At no time during the process is it necessary to apply any external heat to the solution. The heat of reaction is sufficient.
摘要翻译：通过将冰醋酸加入钛酸四异丙酯中来制备酰化钛酸溶液。然后加入蒸馏水直到溶液清除，并加入高等级的碱土金属碳酸盐如BaCO 3，SrCO 3或CaCO 3或其组合并搅拌直到土金属溶解并且溶液再次变得澄清。加入碱性氢氧化物如NaOH，直到溶液的pH达到13或10以上，并在溶液中形成土金属钛酸盐晶体。然后将溶液过滤以产生碱土金属钛酸盐滤饼，然后将其干燥并洗涤以产生所需的粉末。在此过程中，任何时候都不得不对溶液施加任何外部热量。反应热是足够的。

2. 发明授权

US5116560A Method of forming rare earth oxide ceramic scintillator with ammonium dispersion of oxalate precipitates 失效
标题翻译：用草酸盐沉淀的铵分散体形成稀土氧化物陶瓷闪烁体的方法
公开(公告)号：US5116560A
公开(公告)日：1992-05-26
申请号：US673608
申请日：1991-03-22
申请人： Stephen Lee Dole , Subramaniam Venkataramani
发明人： Stephen Lee Dole , Subramaniam Venkataramani
IPC分类号： C01F17/00 , C04B35/50 , G01T1/20 , G01T1/202
CPC分类号： G01T1/202 , C01F17/0043 , C04B35/50 , C09K11/7787 , G01T1/2023
摘要： A method of forming polycrystalline rare earth oxide ceramic scintillators formed by dissolving a mixture of oxides of the scintillator in an aqueous hydrochloric or nitric acid solution to form a rare earth solution, precipitating oxalates from the rare earth solution, calcining the oxalates to form the respective oxides, cold pressing the oxides to form a compact, and sintering the compact in a reducing atmosphere or vacuum to form the scintillator, the method being improved by precipitating the oxalates by admixing the rare earth solution with an oxalic solution comprised of, oxalic acid and ammonium ions in an amount that disperses the oxalate precipitates.

3. 发明授权

US5497540A Method for fabricating high density ultrasound array 失效
标题翻译：高密度超声阵列制造方法
公开(公告)号：US5497540A
公开(公告)日：1996-03-12
申请号：US362338
申请日：1994-12-22
申请人： Subramaniam Venkataramani , Robert F. Kwasnick , Peter W. Lorraine
发明人： Subramaniam Venkataramani , Robert F. Kwasnick , Peter W. Lorraine
IPC分类号： B06B1/06 , H01L41/22
CPC分类号： B06B1/0622 , Y10T29/42
摘要： A high yield method of fabricating an ultrasound array having densely packed ultrasound elements with smooth surface finishes includes the steps of: 1) applying an acoustic matching material to opposites faces (or surfaces) of a piezo electric material ceramic block; 2) cutting the block in a plane perpendicular to the two faces of the block so as to form a plurality of wafers having the acoustic matching material disposed on opposite ends; 3) assembling the wafers to form a laminated body having respective portions of the matching layer on opposite surfaces and with the wafers each being separated from an adjacent wafer by a selected gap distance and bonded together by a polymeric adhesive material; 4) cutting the laminated body along a longitudinal axis so as to form a first laminate body subassembly and a second laminate body subassembly, each of the subassemblies having a front surface having the acoustic matching material disposed thereon and a back surface where the laminate body was cut; 5) applying a backing layer to each laminate body subassembly; and 6) removing the polymeric adhesive material disposed between the wafers, whereby each subassembly comprises an ultrasound array having transducer elements separated by the selected array gap distance.
摘要翻译：制造具有光滑表面光洁度的密集超声波元件的超声阵列的高屈服方法包括以下步骤：1）将声匹配材料施加到压电陶瓷块的相对面（或表面）上; 2）在与块的两个面垂直的平面中切割块，以便形成多个晶片，其中声学匹配材料设置在相对端; 3）组装晶片以形成具有相对表面上的匹配层的相应部分的层叠体，并且晶片各自与相邻晶片分离选定的间隙距离，并通过聚合物粘合材料结合在一起; 4）沿着纵向轴线切割层压体以形成第一层压体子组件和第二层压体子组件，每个子组件具有设置在其上的声匹配材料的前表面和层叠体的后表面切; 5）将背衬层施加到每个层叠体子组件; 以及6）去除设置在晶片之间的聚合物粘合剂材料，由此每个子组件包括具有由所选阵列间隙距离分开的换能器元件的超声阵列。

4. 发明授权

US5124072A Alkaline earth hafnate phosphor with cerium luminescence 失效
标题翻译：具有铈发光的碱土铪磷光体
公开(公告)号：US5124072A
公开(公告)日：1992-06-23
申请号：US801559
申请日：1991-12-02
申请人： Stephen L. Dole , Subramaniam Venkataramani
发明人： Stephen L. Dole , Subramaniam Venkataramani
IPC分类号： C09K11/77
CPC分类号： C09K11/7718
摘要： A phosphor comprising an effective amount of cerium to provide luminescence, and the balance substantially an oxide compound of hafnium and an alkaline earth from the group consisting of barium, strontium, calcium, and mixtures thereof, having substantially a perovskite crystal form.
摘要翻译：一种荧光体，其包含有效量的铈以提供发光，余量基本上由钡，锶，钙及其混合物组成的组中的铪和碱土金属的氧化物化合物具有基本上钙钛矿晶体形式。

5. 发明授权

US5321335A Alumina, calcia, yttria sealing composition 失效
标题翻译：氧化铝，氧化钙，氧化钇密封组成
公开(公告)号：US5321335A
公开(公告)日：1994-06-14
申请号：US924215
申请日：1992-08-03
申请人： Frederic J. Klug , Subramaniam Venkataramani , Kenneth W. Lay
发明人： Frederic J. Klug , Subramaniam Venkataramani , Kenneth W. Lay
IPC分类号： C04B37/00 , C04B37/02 , H01J61/30 , H01J61/36 , H01J17/18 , C03C3/00
CPC分类号： H01J61/36 , C04B37/005 , C04B37/025 , C04B2237/064 , C04B2237/10 , C04B2237/34 , C04B2237/343 , C04B2237/708 , C04B2237/765
摘要： The invention relates to a sealing composition suitable for bonding yttria or alumina ceramic members, or bonding refractory metals to the ceramics. The sealing composition has, in mole percent, about 0.5 to 40 percent yttria, about 45 to 65 percent alumina, up to 10 mole percent strontia, and the balance substantially calcia.
摘要翻译：本发明涉及一种适于粘结氧化钇或氧化铝陶瓷构件的密封组合物，或将难熔金属粘合到陶瓷上。密封组合物的摩尔百分比为约0.5-40％的氧化钇，约45-65％的氧化铝，至多10％的锶，余量基本上为钙。

6. 发明授权

US5242620A Gadolinium lutetium aluminate phosphor with cerium luminescence 失效
标题翻译：镧铝酸镧荧光体与铈发光
公开(公告)号：US5242620A
公开(公告)日：1993-09-07
申请号：US908117
申请日：1992-07-02
申请人： Stephen L. Dole , Subramaniam Venkataramani
发明人： Stephen L. Dole , Subramaniam Venkataramani
IPC分类号： C09K11/77 , C09K11/80
CPC分类号： C09K11/7774
摘要： A phosphor is disclosed comprised of an effective amount of cerium to provide luminescence, and the balance substantially a gadolinium lutetium aluminate compound having the formula Gd.sub.x Lu.sub.1-x A10.sub.3, where x ranges from about 0.25 to 0.9.
摘要翻译：公开了一种荧光体，其包含有效量的铈以提供发光，余量基本上为具有式GdxLu1-xA103的镥铝酸镧化合物，其中x为约0.25至0.9。

7. 发明授权

US5116559A Method of forming yttria-gadolinia ceramic scintillator using hydroxide coprecipitation step 失效
标题翻译：使用氢氧化物共沉淀步骤形成氧化钇 - 氧化钆陶瓷闪烁体的方法
公开(公告)号：US5116559A
公开(公告)日：1992-05-26
申请号：US660462
申请日：1991-02-26
申请人： Stephen L. Dole , Subramaniam Venkataramani
发明人： Stephen L. Dole , Subramaniam Venkataramani
IPC分类号： A61B6/03 , C01F17/00 , C04B35/50 , G01T1/202
CPC分类号： C04B35/505 , C04B35/50 , C04B35/6261 , C04B35/62655 , C09K11/7787 , G01T1/2023 , C04B2235/3224 , C04B2235/3225 , C04B2235/449 , C04B2235/604 , C04B2235/652 , C04B2235/6562 , C04B2235/6581 , C04B2235/6582 , C04B2235/661 , C04B2235/762 , C04B2235/9653
摘要： A simplified method of forming polycrystalline translucent-to-transparent yttria-gadolinia composition scintillators comprises forming an aqueous suspension of hydroxide coprecipitates of the yttria-gadolinia composition, and converting the hydroxides to oxalates. The oxalates are neutralized by washing, dried, and granulated to form a finely dispersed oxalate powder. The oxalate powder is calcined, cold pressed to form a compact, and sintered in a reducing atmosphere or vacuum to form the polycrystalline translucent-to-transparent yttria-gadolinia composition scintillator.

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