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

US5768937A Acoustic sensor for in-line continuous monitoring of gasses 失效
标题翻译：用于气体连续监测的声学传感器
公开(公告)号：US5768937A
公开(公告)日：1998-06-23
申请号：US748599
申请日：1996-11-13
申请人： Abdul Wajid , Clarence Hurd , Melvin C. Hetzel
发明人： Abdul Wajid , Clarence Hurd , Melvin C. Hetzel
IPC分类号： G01F1/66 , G01N29/036 , G01N29/22 , G01F17/00
CPC分类号： G01N29/036 , G01F1/662 , G01F1/667 , G01N29/22 , G01N2291/0222 , G01N2291/02836 , G01N2291/02881
摘要： An acoustic cell includes multiple acoustic cavities fluidly coupled together. At least two of the acoustic cavities have unequal lengths and cross sections. End segments of the acoustic cell are uniformly cylindrically shaped or conically shaped. A driver transducer at one end of the acoustic cell and a receiver transducer at another end of the acoustic cell are acoustically isolated from the acoustic cell. A pair of preferably metallic isolation diaphragms transmit acoustic signals to and from the transducers without significantly altering the phase-frequency characteristics of the acoustic signals. The acoustic cell operates as an acoustic resonator operating at frequencies lower than any possible self-resonance frequencies of the isolation diaphragms or the driver and receiver transducers. When a binary gas is flowed through the cell, a processor detects a resonant frequency of the gas within the cell to determine a composition of the gas.
摘要翻译：声学单元包括流体耦合在一起的多个声腔。至少两个声腔具有不相等的长度和横截面。声学单元的端部段是均匀的圆柱形或圆锥形的。在声学单元的一端处的驱动器换能器和声学单元的另一端处的接收器换能器与声学单元进行声学隔离。一对优选的金属隔离膜片将声信号传递到换能器而不显着地改变声信号的相位频率特性。声学单元作为声学谐振器工作，频率低于隔离隔膜或驱动器和接收器换能器的任何可能的自谐振频率。当二进制气体流过电池时，处理器检测电池内的气体的共振频率以确定气体的组成。

2. 发明授权

US5112642A Measuring and controlling deposition on a piezoelectric monitor crystal 失效
标题翻译：在压电监测晶体上测量和控制沉积
公开(公告)号：US5112642A
公开(公告)日：1992-05-12
申请号：US505668
申请日：1990-03-30
申请人： Abdul Wajid
发明人： Abdul Wajid
IPC分类号： C23C14/54 , G01B7/06 , G01B17/02 , G01B17/06
CPC分类号： G01B7/066
摘要： The thickness and rate of growth of a deposited film is monitored using a piezoelectric crystal sensor such as an AT-cut plano-convex crystal. The frequencies of the fundamental frequency and another resonance mode are measured prior to deposition, and the change of these two frequencies is monitored during deposition. The areal mass density of the deposited material is determined from these two resonance frequencies for the uncoated quartz crystal and for the crystal during deposition. A frequency generator provides accurate sweeps of frequency which are applied to the crystal, and the crystal response is supplied to a phase detector to identify the positions of the resonance frequencies. The acoustic impedance ratio Z of the deposited material relative to the fresh crystal is computed from the resonance frequencies for the coated and uncoated crystal, by applying the modal equations for AT-cut plano-convex quartz crystal and Lu-Lewis relation. From the frequency shifts and acoustic impedance ratio, and areal mass density can be calculated. The same crystal can be used to control the growth rate of several successive layers.
摘要翻译：沉积膜的厚度和生长速率使用压电晶体传感器如AT切平面凸晶体来监测。在沉积之前测量基频和另一共振模式的频率，并且在沉积期间监测这两个频率的变化。沉积材料的面积质量密度由沉积中未涂覆的石英晶体和晶体的这两个共振频率确定。频率发生器提供施加到晶体的精确的频率扫描，并且将晶体响应提供给相位检测器以识别谐振频率的位置。通过应用AT切割平凸石英晶体和Lu-Lewis关系的模态方程，从涂层和未涂层晶体的共振频率计算沉积材料相对于新鲜晶体的声阻抗比Z。从频移和声阻抗比可以计算出面积质量密度。可以使用相同的晶体来控制几个连续层的生长速率。

3. 发明申请

US20120201954A1 METHOD OF DETERMINING MULTILAYER THIN FILM DEPOSITION ON A PIEZOELECTRIC CRYSTAL 有权
标题翻译：在压电晶体上测定多层薄膜沉积的方法
公开(公告)号：US20120201954A1
公开(公告)日：2012-08-09
申请号：US13020381
申请日：2011-02-03
申请人： Abdul Wajid
发明人： Abdul Wajid
IPC分类号： H01L41/22
CPC分类号： G01N29/12 , G01B7/066 , G01N29/09 , G01N2291/0237 , G01N2291/02854 , G01N2291/0426
摘要： A method for accurately calculating the thickness of deposited thin film layers onto a piezoelectric crystal blank in which dissimilar materials can be utilized, enabling determinations for various applications employing exotic materials. Additionally, the specific acoustic impedance (or equivalent z-ratio) of an unknown deposited material can be determined. The exact analytical solution nearly eliminates thickness errors when several layers of different materials are sequentially deposited on the same monitor quartz crystal.
摘要翻译：一种用于精确计算沉积的薄膜层到可以利用不同材料的压电晶体坯料上的厚度的方法，能够确定使用外来材料的各种应用。此外，可以确定未知沉积材料的比声阻抗（或等效z比）。当几层不同的材料依次沉积在相同的监测石英晶体上时，精确的分析解决方案几乎消除了厚度误差。

4. 发明授权

US06482649B1 Acoustic consumption monitor 有权
标题翻译：消声器
公开(公告)号：US06482649B1
公开(公告)日：2002-11-19
申请号：US09404136
申请日：1999-09-23
申请人： Carl A. Gogol, Jr. , Abdul Wajid , Gary Rubloff
发明人： Carl A. Gogol, Jr. , Abdul Wajid , Gary Rubloff
IPC分类号： G01N3300
CPC分类号： G01N29/024 , G01N29/036 , G01N29/222 , G01N2291/0215 , G01N2291/02809 , Y10T436/25875
摘要： A method of determining the reaction efficiency of a CVD process reactor by which a reactive gas combination entering the reactor deposits a solid reaction product as a thin film onto a substrate. The composition of the reactive gas combination is measured by an acoustic cell which is disposed downstream from the outlet port of the reactor to determine the reactor's efficiency. Determination of the reactor's efficiency allows the growth rate of the thin film to be determined as well as associated rates of the products which have been exhausted from the reactor.
摘要翻译：确定进入反应器的反应气体组合的CVD工艺反应器的反应效率的方法将作为薄膜的固体反应产物沉积在基材上。反应气体组合的组成通过设置在反应器的出口下游的声学单元来测量，以确定反应器的效率。确定反应器的效率允许确定薄膜的生长速率以及从反应器中排出的产物的相关速率。

5. 发明授权

US5528924A Acoustic tool for analysis of a gaseous substance 失效
标题翻译：用于分析气态物质的声学工具
公开(公告)号：US5528924A
公开(公告)日：1996-06-25
申请号：US158562
申请日：1993-11-29
申请人： Abdul Wajid , Carl A. Gogol
发明人： Abdul Wajid , Carl A. Gogol
IPC分类号： G01N29/036 , G01N29/22
CPC分类号： G01N29/222 , G01N29/036 , G01N2291/0212 , G01N2291/02881 , G01N2291/102
摘要： An acoustic technique is employed to identify the species of a sample of refrigerant gas and whether it contains significant contaminants. The refrigerant is admitted into a Helmholtz resonator under controlled pressure, and a drive frequency is swept across a frequency band and applied to a first transducer. A second transducer picks up the vibrations in the resonator and the output signal is compared to the drive signal. The resonant peak or center frequencies are identified and the sharpness or quality factors are measured. These measured data are compared with stored data to identify the refrigerant.
摘要翻译：使用声学技术来识别制冷剂气体样品的种类以及它是否含有显着的污染物。制冷剂在受控压力下进入亥姆霍兹共振器，驱动频率扫过频带并施加到第一换能器。第二个传感器拾取谐振器中的振动，并将输出信号与驱动信号进行比较。识别谐振峰值或中心频率，并测量清晰度或质量因子。将这些测量数据与存储的数据进行比较以识别制冷剂。

6. 发明授权

US5233261A Buffered quartz crystal 失效
标题翻译：缓冲石英晶体
公开(公告)号：US5233261A
公开(公告)日：1993-08-03
申请号：US812685
申请日：1991-12-23
申请人： Abdul Wajid
发明人： Abdul Wajid
IPC分类号： H01L41/22 , H03H9/19
CPC分类号： H01L41/29 , H03H9/19
摘要： An AT-cut quartz crystal for a quartz crystal microbalance has a buffer layer sandwiched between an adhesion layer and an electrode layer on the front or deposition side of the crystal. The buffer layer can be a zinc layer of 6000 .ANG. sandwiched between a titanium or chromium adhesion layer of 100 to 160 .ANG. and a gold, silver, or aluminum outer electrode layer of about 2000 .ANG.. The zinc layer has a relatively low bulk modulus, and absorbs stress imposed by the deposited layer. The buffer layer prolongs useful crystal life, particularly when depositing dielectric materials. The crystal should have a modest surface roughness as keying-in structure.
摘要翻译：用于石英晶体微量天平的AT切割石英晶体具有夹在晶体的正面或沉积侧上的粘附层和电极层之间的缓冲层。缓冲层可以是夹在100至160安培的钛或铬粘合层和约2000安格姆的金，银或铝外电极层之间的6000安格姆的锌层。锌层具有较低的体积弹性模量，并且吸收由沉积层施加的应力。缓冲层延长了有用的晶体寿命，特别是当沉积介电材料时。晶体应具有适度的表面粗糙度作为键入结构。

7. 发明授权

US08438924B2 Method of determining multilayer thin film deposition on a piezoelectric crystal 有权
标题翻译：确定压电晶体上多层薄膜沉积的方法
公开(公告)号：US08438924B2
公开(公告)日：2013-05-14
申请号：US13020381
申请日：2011-02-03
申请人： Abdul Wajid
发明人： Abdul Wajid
IPC分类号： G01N29/00
CPC分类号： G01N29/12 , G01B7/066 , G01N29/09 , G01N2291/0237 , G01N2291/02854 , G01N2291/0426
摘要： A method for accurately calculating the thickness of deposited thin film layers onto a piezoelectric crystal blank in which dissimilar materials can be utilized, enabling determinations for various applications employing exotic materials. Additionally, the specific acoustic impedance (or equivalent z-ratio) of an unknown deposited material can be determined. The exact analytical solution nearly eliminates thickness errors when several layers of different materials are sequentially deposited on the same monitor quartz crystal.
摘要翻译：一种用于精确计算沉积的薄膜层到可以利用不同材料的压电晶体坯料上的厚度的方法，能够确定使用外来材料的各种应用。此外，可以确定未知沉积材料的比声阻抗（或等效z比）。当几层不同的材料依次沉积在相同的监测石英晶体上时，精确的分析解决方案几乎消除了厚度误差。

8. 发明授权

US06600501B1 Method and system for generating a dynamic timeline 有权
标题翻译：用于生成动态时间轴的方法和系统
公开(公告)号：US06600501B1
公开(公告)日：2003-07-29
申请号：US09574459
申请日：2000-05-18
申请人： Larry J. Israel , James H. Cox , Kipling A. Knox , Abdul Wajid “Shammi” Mohamed , Adrienne E. O'Donnell , Lisa Everett Woods
发明人： Larry J. Israel , James H. Cox , Kipling A. Knox , Abdul Wajid “Shammi” Mohamed , Adrienne E. O'Donnell , Lisa Everett Woods
IPC分类号： G09G500
CPC分类号： G06Q10/109 , Y10S715/963
摘要： A Dynamic Timeline for a computer-based information source, such as an electronic encyclopedia. The Dynamic Timeline can display Links, typically a reference to a time period, topic, or event. When the user chooses the Link, an array of information is presented to the user about the Link-related time period, topic, or event. Links can highlight individual events and trends that occur over a period of time. Links also can present an editorial perspective of events. The Links are typically listed in chronological order on the Dynamic Timeline for an electronic encyclopedia. The Dynamic Timeline allows users to view different Links by changing some dynamic settings.
摘要翻译：基于计算机的信息源的动态时间表，如电子百科全书。动态时间轴可以显示链接，通常是对时间段，主题或事件的引用。当用户选择链接时，向用户提供关于链接相关时间段，主题或事件的信息阵列。链接可以突出显示一段时间内发生的各种事件和趋势。链接也可以呈现事件的编辑视角。链接通常按照电子百科全书的动态时间轴按时间顺序列出。动态时间轴允许用户通过更改一些动态设置来查看不同的链接。

9. 发明授权

US5524477A Quantitative determination of air present in refrigerant sample by measurement of pressure coefficient of resonance frequency 失效
标题翻译：通过测量共振频率的压力系数定量测定制冷剂样品中存在的空气
公开(公告)号：US5524477A
公开(公告)日：1996-06-11
申请号：US190306
申请日：1994-02-02
申请人： Abdul Wajid
发明人： Abdul Wajid
IPC分类号： G01N29/036 , G01N29/22 , G01N29/12
CPC分类号： G01N29/036 , G01N29/222 , G01N2291/0212 , G01N2291/02881 , G01N2291/102
摘要： An acoustic technique is employed to identify the species of a refrigerant gas and whether it contains significant contaminants. Air in the refrigerant can be tolerated, but must be accounted for in determining the acoustic properties of the sample. The refrigerant is admitted into a Helmholtz resonator under a controlled pressure, and a drive frequency is applied to a transducer. Another transducer picks up the vibrations in the resonator and an output signal is compared to the drive signal to find resonant peaks and sharpness factors. The change in resonant frequency with pressure is measured, and is employed to quantify the presence of air in the sample. The amount of air present determines a frequency correction, which permits unambiguous identification of the species of refrigerant and of its purity.
摘要翻译：使用声学技术来识别制冷剂气体的种类以及它是否含有显着的污染物。可以容忍制冷剂中的空气，但在确定样品的声学特性时必须考虑到这一点。制冷剂在受控的压力下进入亥姆霍兹共振器，驱动频率被施加到换能器上。另一个传感器拾取谐振器中的振动，并将输出信号与驱动信号进行比较，以发现谐振峰值和锐度因子。测量共振频率随压力的变化，并用于量化样品中空气的存在。存在的空气量决定了频率校正，这允许对制冷剂种类及其纯度的明确识别。

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