Inventor
Ralph A. Bergh
Inventor
Phoenix, AZ, US
Overview
Patents· 28 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G01Cprimary
G01CMeasuring distances, levels or bearings49%
G02BOptical elements, systems or apparatus22%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests10%
G01BMeasuring length, thickness or similar linear dimensions5%
G01RMeasuring electric variables5%
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein5%
G01NInvestigating or analysing materials by determining their chemical or physical properties2%
H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light2%
PatentTitleYear
9,518,827'Method and apparatus for multiplexing multiple Sagnac interferometers with single input for source light'20169,103,676'Interferometer employing a multi-waveguide optical loop path and fiber optic rotation rate sensor employing same'20158,610,995'Occasional calibration phase-difference modulation for sagnac interferometer'20138,497,994'Interferometer employing a multi-waveguide optical loop path and fiber optic rotation rate sensor employing same'20137,505,139'Signal processing for a Sagnac interferometer'20096,046,810'Kerr effect compensator for a fiber optic gyroscope'20005,999,304'Fiber optic gyroscope with deadband error reduction'19995,946,097'Vibration rectification error reducer for fiber optic gyroscope'19995,854,678'Three-axis fiber optic gyroscope having a single source and multi-coupler configuration'19985,781,300'Backscatter error reducer for interferometric fiber optic gyroscope'19985,602,642'Magnetically insensitive fiber optic rotation sensor'19975,528,715'Trimming of fiber optic winding and method of achieving same'19965,506,923'Apparatus and method for trimming of fiber optic winding'19965,475,774'Optical fiber sensor coil using reverse quadrupoles and method of winding same'19955,153,676'Apparatus and method for reducing phase errors in an interferometer'19925,120,130'Apparatus and method for reducing phase errors in an interferometer'19924,869,592'Method and apparatus for obtaining a digital measure of absolute rotation'19894,773,759'Interferometer with Kerr effect compensation'19884,733,938'Magneto-optic rotator'19884,671,658'Fiber optic rotation sensor utilizing a magnetic shield and an optical isolator'19874,615,582'Magneto-optic rotator for providing additive Faraday rotations in a loop of optical fiber'19864,603,940'Fiber optic dye amplifier'19864,601,541'Fiber optic directional coupler'19864,560,234'Fiber optic switchable coupler'19854,536,058'Method of manufacturing a fiber optic directional coupler'19854,493,528'Fiber optic directional coupler'19854,410,275'Fiber optic rotation sensor'19834,386,822'Polarizer and method'1983Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1983–1992Patents assigned to UNIV LELAND STANFORD JUNIOR (13)· patent assignee history
1983–1992Based in Palo Alto, CA, US· patent location history
1986Based in Atherton, CA, US· patent location history
1988–1989Based in Menlo Park, CA, US· patent location history
1989–2016Patents assigned to BERGH RALPH A (6)· patent assignee history
1995–2000Patents assigned to HONEYWELL INC (9)· patent assignee history
1995–2013Based in Phoenix, AZ, US· patent location history
2013–2016Based in Lititz, PA, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| UNIV LELAND STANFORD JUNIOR | 13 | 1983–1992 |
| HONEYWELL INC | 9 | 1995–2000 |
| BERGH RALPH Aself | 6 | 1989–2016 |
Locations
| Location | Patents | Span |
|---|---|---|
| Phoenix, AZ, US | 11 | 1995–2013 |
| Palo Alto, California, US | 11 | 1983–1992 |
| Lititz, Pennsylvania, US | 3 | 2013–2016 |
| Menlo Park, California, US | 2 | 1988–1989 |
| Atherton, California, US | 1 | 1986 |