Assignee
EXTREL CORP
US·7 granted patents·456 citations·filing 1987–1993
Top patents by PatentIndex Score
7 records- 0197US4968885AMethod and apparatus for introduction of liquid effluent into mass spectrometer and other gas-phase or particle detectorsEXTREL CORP·Filed 1989·Granted Nov 6, 1990·106 cites·49 claims
- 0294US5285064AMethod and apparatus for introduction of liquid effluent into mass spectrometer and other gas-phase or particle detectorsEXTREL CORP·Filed 1993·Granted Feb 8, 1994·96 cites·8 claims
- 0390US4977785AMethod and apparatus for introduction of fluid streams into mass spectrometers and other gas phase detectorsEXTREL CORP·Filed 1988·Granted Dec 18, 1990·102 cites·12 claims
- 0489US5142143AMethod and apparatus for preconcentration for analysis purposes of trace constitutes in gasesEXTREL CORP·Filed 1991·Granted Aug 25, 1992·118 cites·25 claims
- 0575US4814613ACollision cell for triple quadrupole tandem mass spectrometryEXTREL CORP·Filed 1987·Granted Mar 21, 1989·20 cites·20 claims
- 0660US4980557AMethod and apparatus surface ionization particulate detectorsEXTREL CORP·Filed 1988·Granted Dec 25, 1990·12 cites·38 claims
- 0723US5172581AMethod and apparatus for analyzing encapsulated vaporsEXTREL CORP·Filed 1989·Granted Dec 22, 1992·2 cites·41 claims
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →