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1. 发明申请

US20080084561A1 System and method for high sensitivity optical detection of gases 有权
标题翻译：用于高灵敏度气体检测的系统和方法
公开(公告)号：US20080084561A1
公开(公告)日：2008-04-10
申请号：US11986632
申请日：2007-11-21
申请人： C. Kumar Patel , Michael Pushkarsky , Michael Webber , Tyson MacDonald
发明人： C. Kumar Patel , Michael Pushkarsky , Michael Webber , Tyson MacDonald
IPC分类号： G01J3/30
CPC分类号： G01N21/3504 , G01J3/42 , G01N21/1702 , G01N21/39 , G01N2021/1704 , G01N2021/3595 , G01N2201/1293
摘要： A method and apparatus architecture for detecting gases, particularly hazardous gases which should be detected in miniscule amounts. High sensitivity detection of chemical warfare agents (CWAs) is set forth with very low probability of false positives (PFP) by the use of an innovative laser-photoacoustic spectrometer (L-PAS). Detection of diisopropyl methylphosphonate (DIMP), a decomposition product of Sarin and a relatively harmless surrogate for the nerve gases, is made in the presence of other gases that are expected to be interferences in an urban setting. Detection sensitivity for DIMP in the presence of these interferences of better than 0.45 ppb, which satisfies current homeland and military security requirements is shown as well as the first analysis of optical techniques for the detection of chemical warfare agents (CWAs) and toxic industrial chemicals (TICs) in real world conditions.
摘要翻译：一种用于检测气体，特别是危险气体的方法和装置架构，应以微量检测。通过使用创新的激光 - 光声光谱仪（L-PAS），化学战剂（CWA）的高灵敏度检测被证明具有非常低的假阳性概率（PFP）。在预期会在城市环境中发生干扰的其他气体的存在下，检测二氯甲基膦酸二异丙酯（DIMP），Sarin的分解产物和神经气体相对无害的替代物。在存在这些干扰优于0.45ppb的DIMP的检测灵敏度，其满足当前的国土和军事安全要求，以及用于检测化学战剂（CWA）和有毒工业化学品的光学技术的第一次分析 TIC）在现实世界的条件。

2. 发明申请

US20070229834A1 System and method for high sensitivity optical detection of gases 审中-公开
标题翻译：用于高灵敏度气体检测的系统和方法
公开(公告)号：US20070229834A1
公开(公告)日：2007-10-04
申请号：US11256377
申请日：2005-10-21
申请人： C. Kumar Patel , Michael Pushkarsky , Michael Webber , Tyson MacDonald
发明人： C. Kumar Patel , Michael Pushkarsky , Michael Webber , Tyson MacDonald
IPC分类号： G01N21/61
CPC分类号： G01N21/3504 , G01J3/42 , G01N21/1702 , G01N21/39 , G01N2021/1704 , G01N2021/3595 , G01N2201/1293
摘要： A method and apparatus architecture for detecting gases, particularly hazardous gases which should be detected in miniscule amounts. High sensitivity detection of chemical warfare agents (CWAs) is set forth with very low probability of false positives (PFP) by the use of an innovative laser-photoacoustic spectrometer (L-PAS). Detection of diisopropyl methylphosphonate (DIMP), a decomposition product of Sarin and a relatively harmless surrogate for the nerve gases, is made in the presence of other gases that are expected to be interferences in an urban setting. Detection sensitivity for DIMP in the presence of these interferences of better than 0.45 ppb, which satisfies current homeland and military security requirements is shown as well as the first analysis of optical techniques for the detection of chemical warfare agents (CWAs) and toxic industrial chemicals (TICs) in real world conditions.
摘要翻译：一种用于检测气体，特别是危险气体的方法和装置架构，应以微量检测。通过使用创新的激光 - 光声光谱仪（L-PAS），化学战剂（CWA）的高灵敏度检测被证明具有非常低的假阳性概率（PFP）。在预期会在城市环境中发生干扰的其他气体的存在下，检测二氯甲基膦酸二异丙酯（DIMP），Sarin的分解产物和神经气体相对无害的替代物。在存在这些干扰优于0.45ppb的DIMP的检测灵敏度，其满足当前的国土和军事安全要求，以及用于检测化学战剂（CWA）和有毒工业化学品的光学技术的第一次分析 TIC）在现实世界的条件。

3. 发明授权

US5195023A Integrated circuit package with strain relief grooves 失效
标题翻译：集成电路封装，带应力消除槽
公开(公告)号：US5195023A
公开(公告)日：1993-03-16
申请号：US812555
申请日：1991-12-23
申请人： Louis T. Manzione , C. Kumar Patel
发明人： Louis T. Manzione , C. Kumar Patel
IPC分类号： H05K7/00
CPC分类号： H05K7/00 , H01L2224/48091 , H01L2224/48247 , H01L2924/1815
摘要： As the size and consequent thickness of IC packages shrink bowing of the package due to differential contractions becomes a problem. The solution according to this invention is to mold strain relief grooves into the surface of the plastic package.
摘要翻译：由于IC封装的尺寸和随之而来的厚度由于差分收缩而收缩包装成形成问题。根据本发明的解决方案是将应变消除凹槽模制到塑料封装的表面中。

4. 发明申请

US20060217626A1 Diagnostic method for high sensitivity detection of component concentrations in human gas emissions 有权
公开(公告)号：US20060217626A1
公开(公告)日：2006-09-28
申请号：US11351574
申请日：2006-02-09
申请人： C. Kumar Patel , L. Narasimhan
发明人： C. Kumar Patel , L. Narasimhan
IPC分类号： A61B5/08 , A61B6/00 , A61B5/00
CPC分类号： G01N21/314 , A61B2010/0083 , A61B2010/0087 , G01N21/39
摘要： A method for detecting component concentrations in human gas emissions such as breath and gas emitted from skin. A gas sample containing a specified component is collected into a gas cell using a pump and a series of valves to draw the gas sample into the cell and control the gas pressure within the cell. A tunable optical radiation beam is passed through the gas cell and the amount of energy absorbed by the specified component may be measured indirectly by taking the difference between the incident and emerging beam energy or directly by optoacoustic methods. Concentrations of the specified component as small as 0.1 ppB may be determined. Additionally, the tunable optical radiation beam may be multiplexed for use with a plurality of systems utilizing the beam for medical purposes.

5. 发明申请

US20050254529A1 Tunable semiconductor laser 有权
标题翻译：可调谐半导体激光器
公开(公告)号：US20050254529A1
公开(公告)日：2005-11-17
申请号：US11185516
申请日：2005-07-19
申请人： C. Kumar Patel
发明人： C. Kumar Patel
IPC分类号： H01S3/08 , H01S3/10 , H01S5/14
CPC分类号： H01S5/141 , H01S3/0813 , H01S3/105 , H01S3/1062
摘要： A tunable semiconductor laser includes gain medium, wavelength-selective element and a laser mode matching element. The wavelength-selective element comprises a first light absorbing plate operatively coupled to the laser mode matching element and provided with an array of high reflectivity mirrors as well as a second light absorbing plate with an array of narrow band pass filter mirrors operatively coupled to the high reflectivity mirror array of the first plate. The narrow band pass filter mirror array is disposed over a respective array of apertures in the second plate. The wavelength-selective element also comprises a light reflective plate with an array of retroreflectors and a third light absorbing plate with an array of apertures operatively disposed between the aperture array of the second plate and the retroreflector array. Activation of a selected retroreflector results in light of a corresponding wavelength being coupled back to the gain medium through the laser mode matching element and the first, second and third plates.
摘要翻译：可调谐半导体激光器包括增益介质，波长选择元件和激光模式匹配元件。波长选择元件包括可操作地耦合到激光模式匹配元件并且设置有高反射镜的阵列的第一光吸收板以及具有可操作地耦合到高的反射镜的阵列的窄带通滤光镜的第二光吸收板第一板的反射镜阵列。窄带通滤光镜阵列设置在第二板中相应的孔阵列上。波长选择元件还包括具有后向反射器阵列的光反射板和具有可操作地设置在第二板的孔径阵列和后向反射器阵列之间的孔阵列的第三光吸收板。所选择的后向反射器的激活导致相应波长的光通过激光模式匹配元件和第一，第二和第三板耦合回增益介质。

6. 发明申请

US20070242952A1 Optical bit stream reader system and method 失效
标题翻译：光比特流读取器系统及方法
公开(公告)号：US20070242952A1
公开(公告)日：2007-10-18
申请号：US11810378
申请日：2007-06-05
申请人： C. Kumar Patel , Lakshminarayanan Narasimhan
发明人： C. Kumar Patel , Lakshminarayanan Narasimhan
IPC分类号： H04B10/08
CPC分类号： G02B6/351 , G02B6/2861 , G02B6/3512
摘要： An all optical fiber bit stream reader system for examining the data contents of an optical fiber involving the conversion of a temporal timing signal into a spatially located signal is provided. The invention generally comprises generating and detecting a signal indicating the presence of data, in a manner which is minimally destructive to the data. One embodiment comprises providing a piece of optical fiber that exhibits a nonlinear response through a two photon absorption process and subsequent emission of a photon corresponding to the two photon absorption process. Such a fiber could comprise a conventional doped silica fiber into which an additional dopant has been introduced. Another embodiment involves modifying the index of refraction of the cladding of the optical fiber line. This causes a fraction of the electric field or light pulse guided through the fiber (if present) to be coupled out of the fiber. Thereafter, the pulse can be detected. The optical bit steam reader can be used for important problems in optical communications such as switching, test-and-measurement, system housekeeping, data sampling, and fiber tapping for optical communications.
摘要翻译：提供了一种用于检查涉及将时间定时信号转换为空间位置的信号的光纤的数据内容的全光纤比特流读取器系统。本发明通常包括以对数据最小的破坏的方式产生和检测指示数据存在的信号。一个实施例包括提供通过双光子吸收过程表现出非线性响应并随后发射对应于两个光子吸收过程的光子的光纤。这种纤维可以包括其中已经引入另外的掺杂剂的常规掺杂的二氧化硅纤维。另一实施例涉及修改光纤线包层的折射率。这导致通过光纤（如果存在）引导的电场或光脉冲的一部分被耦合出光纤。此后，可以检测脉冲。光学位置读取器可用于光通信中的重要问题，如开关，测试和测量，系统管理，数据采样和光通信的光纤窃听。

7. 发明授权

US5904190A Method to prevent explosions in fuel tanks 失效
标题翻译：防止燃料箱爆炸的方法
公开(公告)号：US5904190A
公开(公告)日：1999-05-18
申请号：US877263
申请日：1997-06-17
申请人： C. Kumar Patel
发明人： C. Kumar Patel
IPC分类号： A62C3/06 , A62D1/00 , B64D37/32
CPC分类号： B64D37/32 , A62C3/06 , A62D1/0092
摘要： A method for preventing explosions in closed tanks which hold flammable liquids and flammable vapors and air above these liquid fuels comprising filling the ullage with a pressurized gas which not only excludes oxygen from the ullage but also prevents transmission of fire initiating sparks. The method further comprises filling the ullage with an electronegative gas alone or in combination with an inert gas or gases. More specifically, the preferred electronegative gas is sulfur hexafluoride (SF.sub.6) which may also be used in combination with CO.sub.2 and/or N.sub.2. More particularly, the method is directed to the prevention of explosions in aircraft fuel tanks.
摘要翻译：一种用于防止在这些液体燃料之上容纳易燃液体和易燃蒸汽和空气的封闭罐中的爆炸的方法，包括用加压气体填充空气，该加压气体不仅排除了空气中的氧气，而且防止了火灾发生火花的传播。该方法还包括单独或与惰性气体或气体组合地用负电荷气体填充空气。更具体地，优选的负电性气体是六氟化硫（SF 6），其也可以与CO 2和/或N 2组合使用。更具体地，该方法涉及防止飞机燃料箱中的爆炸。

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