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    • 3. 发明授权
    • High-density adsorbent and method of producing same
    • 高密度吸附剂及其制备方法
    • US4999330A
    • 1991-03-12
    • US312940
    • 1989-02-21
    • Tapan K. BoseRichard ChahineJean-Marie St-Arnaud
    • Tapan K. BoseRichard ChahineJean-Marie St-Arnaud
    • B01J20/20
    • B01J20/20Y10S502/526
    • The invention is concerned with a high-density adsorbent comprising a compacted mass of high surface area carbon particles bound together with a binder and defining a network of substantially unobstructed micropores, the mass of carbon particles having been compacted under a pressure sufficient to cause a reduction of about 50 to about 200% in bulk volume of the mass and a corresponding increase of about 50 to about 200% in density, thereby providing a gas storage capacity increase of about 20 to about 100% over that of the high surface area carbon particles in loose or uncompacted form. The high-density adsorbent according to the invention is particularly useful in adsorption storage systems for low-pressure storage of compressed natural gas.
    • 本发明涉及高密度吸附剂,其包括与粘合剂结合在一起的高表面积碳颗粒的压实块,并限定基本上无阻碍的微孔网络,碳粒子​​的质量在足以引起还原的压力下被压实 的体积体积为约50至约200%,相应地增加约50至约200%的密度,从而提供比高表面积碳颗粒的气体存储容量增加约20至约100% 以松散或未压缩的形式。 根据本发明的高密度吸附剂在用于压缩天然气的低压储存的吸附储存系统中特别有用。
    • 4. 发明授权
    • System for detecting human presence in hazardous situations
    • 用于在危险情况下检测人类存在的系统
    • US5436613A
    • 1995-07-25
    • US61403
    • 1993-05-13
    • Kalyan GhoshTapan K. BoseRaymond CourteauPierre Gibello
    • Kalyan GhoshTapan K. BoseRaymond CourteauPierre Gibello
    • F16P3/14G08B13/26G08B23/00
    • G08B13/26F16P3/14F16P3/147F16P3/148
    • The disclosure relates to a system for the detection of human presence in hazardous situations near moving machinery; appropriately shaped electrodes are placed in an area to be safeguarded and a radio-frequency signal of appropriate frequency and voltage is applied on the electrodes creating an alternating electric field around them. A bridge circuit is used to measure the capacitive impedance created by the electrodes and a dissipation factor is calculated from the real and imaginary parts of the impedance. If a foreign object is introduced into the electric field, the characteristics of the dielectric are modified creating a change of the value of the dissipation factor. The dissipation of energy in the high frequency region is much greater if this foreign object is a biological tissue as compared to other types of materials, such as conductors or insulators. Thus, the system detects human presence by noting the increase of the dissipation factor above a threshold value, and the movement of the appropriate machine part can then be stopped, thereby eliminating the danger of injury to the person.
    • 本公开涉及一种用于在移动机械附近的危险情况下检测人类存在的系统; 将适当形状的电极放置在要保护的区域中,并且在电极上施加适当频率和电压的射频信号,从而在其周围形成交替电场。 桥接电路用于测量由电极产生的电容性阻抗,并根据阻抗的实部和虚部计算耗散因数。 如果异物被引入到电场中,则电介质的特性被改变,导致耗散因数的值的变化。 与其他类型的材料(例如导体或绝缘体)相比,如果这种异物是生物组织,则在高频区域中的能量耗散更大。 因此,系统通过注意耗散因数的增加高于阈值来检测人的存在,然后可以停止适当的机器部件的移动,从而消除对人的伤害的危险。
    • 6. 发明授权
    • Apparatus for measuring capacitance of a low value three-terminal
capacitor with a resonance technique
    • 用共振技术测量低值三端电容器电容的装置
    • US4847551A
    • 1989-07-11
    • US194862
    • 1988-05-17
    • Tapan K. BoseRaymond Courteau
    • Tapan K. BoseRaymond Courteau
    • G01R27/26
    • G01R27/2605
    • The unknown capacitor or a standard capacitor are switched, one at a time, in parallel to a frequency setting circuit which sets the frequency of operation. The parallel combination of the unknown capacitor and the frequency setting circuit form a first parallel resonant circuit and the parallel combination of the standard capacitor and the frequency setting circuit form a second resonant parallel circuit. These resonant circuits are part of the feedback network of an oscillator. The bottom ends of the resonant circuits are connected to an instrumentation amplifier for maintaining the bottom ends at vertual ground in order to make three terminal measurements. A frequency meter is provided for measuring the frequency of resonance of the first resonant circuit and the second resonant circuit.
    • 将未知电容器或标准电容器一次一个地切换到设定操作频率的频率设定电路。 未知电容器和频率设定电路的并联组合形成第一并联谐振电路,并且标准电容器和频率设定电路的并联组合形成第二谐振并联电路。 这些谐振电路是振荡器的反馈网络的一部分。 谐振电路的底端连接到仪表放大器,用于将底端保持在垂直接地处,以进行三端测量。 提供了用于测量第一谐振电路和第二谐振电路的谐振频率的频率计。
    • 7. 发明授权
    • Precise determination of the compressibility factor of a gas from
refractive index measurements
    • US4702604A
    • 1987-10-27
    • US837290
    • 1986-03-07
    • Jurgen H. AchtermannTapan K. BoseJean-Marie St-Arnaud
    • Jurgen H. AchtermannTapan K. BoseJean-Marie St-Arnaud
    • G01N21/21G01N21/45G01N21/41G01N1/10
    • G01N21/45G01N21/21G01N2201/06113
    • A method and an apparatus for the precise determination of the compressibility factor of a gas sample are disclosed. Two grating interferometers are coupled together with one interferometer defining a refractive index interferometer adapted to provide a signal of information related to the refractive index of the gas sample and the other interferometer defining a pressure interferometer adapted to provide another signal of information related to the pressure of the gas sample whereby to permit measurement of the refractive index as a function of pressure. Each interferometer is capable of dividing a linearly polarized monochromatic laser beam into a measuring beam and a reference beam and causing the measuring beam and reference beam to travel along respective optical paths extending in close parallel relationship over predetermined optical path lengths. The refractive index interferometer and pressure interferometer comprise respectively two optical cells in tandem alignment and a single optical cell with each cell having elongated measuring and reference compartments arranged in close parallel relationship along the parallel optical paths of the measuring beam and reference beam to receive same therethrough, the measuring compartments of both cells of the refractive index interferometer being interconnected to permit gas expansion therebetween with the measuring compartment of one of the cells being connected to the measuring compartment of the single cell of the pressure interferometer via a pressure equilibrium chamber to provide the interferometer coupling. The expansion technique enables one to obtain accurate values for higher order terms of the Lorentz-Lorenz equation. This technique combined with the absolute measurements of the refractive index as a function of pressure leads to values of the compressibility factor comparable to the best PVT values, in a much shorter time as compared to other methods.