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
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →