Assignee
AMERICAN SIGMA INC
US·16 granted patents·745 citations·filing 1986–1997
Top patents by PatentIndex Score
16 records- 0194US5299141AAutomatic fluid monitoring and sampling apparatus and methodAMERICAN SIGMA INC·Filed 1992·Granted Mar 29, 1994·126 cites·31 claims
- 0292US5172332AAutomatic fluid sampling and monitoring apparatus and methodAMERICAN SIGMA INC·Filed 1990·Granted Dec 15, 1992·88 cites·29 claims
- 0387US5633809AMulti-function flow monitoring apparatus with area velocity sensor capabilityAMERICAN SIGMA INC·Filed 1996·Granted May 27, 1997·105 cites·27 claims
- 0482US4749337AReciprocating bladder pump, and methods of constructing and utilizing sameAMERICAN SIGMA INC·Filed 1987·Granted Jun 7, 1988·48 cites·20 claims
- 0581US5091863AAutomatic fluid sampling and flow measuring apparatus and methodAMERICAN SIGMA INC·Filed 1989·Granted Feb 25, 1992·48 cites·36 claims
- 0681US4660607ASensor controlled sampling apparatus and methodAMERICAN SIGMA INC·Filed 1986·Granted Apr 28, 1987·47 cites·17 claims
- 0777US5506791AMulti-function flow monitoring apparatus with multiple flow sensor capabilityAMERICAN SIGMA INC·Filed 1994·Granted Apr 9, 1996·63 cites·60 claims
- 0876US6208943B1Fluid flow measurement correcting system and methods of constructing and utilizing sameAMERICAN SIGMA INC·Filed 1997·Granted Mar 27, 2001·41 cites·20 claims
- 0973US5587926ARefrigerated fluid sampling apparatus and method with variable volume sampling systemAMERICAN SIGMA INC·Filed 1994·Granted Dec 24, 1996·49 cites·26 claims
- 1066US5691914AFluid flow measurement correcting system, and methods of constructing and utilizing sameAMERICAN SIGMA INC·Filed 1996·Granted Nov 25, 1997·23 cites·20 claims
- 1161US4701107ATwo stage pump samplerAMERICAN SIGMA INC·Filed 1986·Granted Oct 20, 1987·41 cites·18 claims
- 1259US5274721AFiber optic system and methodAMERICAN SIGMA INC·Filed 1992·Granted Dec 28, 1993·20 cites·22 claims
- 1350US5028213AConvertible and variable-length groundwater devices, components therefor, and methods of constructing and utilizing sameAMERICAN SIGMA INC·Filed 1989·Granted Jul 2, 1991·15 cites·50 claims
- 1444US5027902ASelf-cycling pump apparatus and methodAMERICAN SIGMA INC·Filed 1990·Granted Jul 2, 1991·21 cites·33 claims
- 1534USD457491SUltrasonic transducerAMERICAN SIGMA INC·Filed 1997·Granted May 21, 2002·4 cites·1 claims
- 1634US4869371APump components for building pump, and methods of constructing and using sameAMERICAN SIGMA INC·Filed 1988·Granted Sep 26, 1989·6 cites·21 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →