Inventor
Patrick C. Brownrigg
Inventor
Long Beach, CA, US
Overview
Patents· 9 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G01Dprimary
G01DMeasuring not specially adapted for a specific variable19%
G01FMeasuring volume, volume flow, mass flow or liquid level19%
G01PMeasuring linear or angular speed, acceleration, deceleration, or shock13%
G02BOptical elements, systems or apparatus13%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests13%
G01MTesting static or dynamic balance of machines or structures6%
G01NInvestigating or analysing materials by determining their chemical or physical properties6%
G06VImage or video recognition or understanding6%
H10NElectric solid-state devices not otherwise provided for6%
PatentTitleYear
5,270,538'System for accurately detecting changes in temperature and pressure'19935,220,180'Fiber optic fuel and liquid gauge having an open rigid \"J\" shaped tube'19935,118,932'Shaft rotation rate sensor with a diffraction grating producing a velocity-related beat frequency'19925,100,230'True ground speed sensor'19925,099,131'Acquisition and testing of latent fingerprints using upconversion'19925,077,482'Liquid gauge having an optical fiber with flexible membrane enclosure'19915,058,420'Fiber optic liquid leak detector'19915,018,827'Method for eliminating the temperature sensitivity of an optical fiber and a temperature insensitive optical fiber'19915,004,914'Fiber-optic interferometric chemical sensor'1991Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1991–1993Patents assigned to HUGHES AIRCRAFT CO (8)· patent assignee history
1991Patents assigned to BROWNRIGG PATRICK (1)· patent assignee history
1991Patents assigned to VALI VICTOR (1)· patent assignee history
1991Patents assigned to YOUMANS BRUCE (1)· patent assignee history
1991–1993Based in Long Beach, CA, US· patent location history
1993Based in San Jose, CA, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HUGHES AIRCRAFT CO | 8 | 1991–1993 |
| BROWNRIGG PATRICKself | 1 | 1991 |
| VALI VICTOR | 1 | 1991 |
| YOUMANS BRUCE | 1 | 1991 |
Locations
| Location | Patents | Span |
|---|---|---|
| Long Beach, California, US | 8 | 1991–1993 |
| San Jose, California, US | 1 | 1993 |