Bergh; Ralph A.

Patent Applications and Registrations

Patent applications and USPTO patent grants for Bergh; Ralph A..The latest application filed is for "interferometer employing a multi-waveguide optical loop path and fiber optic rotation rate sensor employing same".

Company Profile

0.26.9

Bergh; Ralph A. - Lititz PA
Bergh; Ralph A. - Phoenix AZ
Bergh; Ralph A. - Palo Alto CA
Bergh; Ralph A. - Atherton CA

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Method and apparatus for multiplexing multiple Sagnac interferometers with single input for source light Grant 9,518,827 - Bergh December 13, 2	2016-12-13
Interferometer employing a multi-waveguide optical loop path and fiber optic rotation rate sensor employing same Grant 9,103,676 - Bergh August 11, 2	2015-08-11
Interferometer Employing A Multi-waveguide Optical Loop Path And Fiber Optic Rotation Rate Sensor Employing Same App 20140218739 - Bergh; Ralph A.	2014-08-07
Occasional calibration phase-difference modulation for sagnac interferometer Grant 8,610,995 - Bergh December 17, 2	2013-12-17
Interferometer employing a multi-waveguide optical loop path and fiber optic rotation rate sensor employing same Grant 8,497,994 - Bergh July 30, 2	2013-07-30
Sagnac Interferometer With Bundle-fiber Coil App 20130050709 - Bergh; Ralph A.	2013-02-28
Method And Apparatus For Multiplexing Multiple Sagnac Interferometers With Single Input For Source Light App 20130050708 - Bergh; Ralph A.	2013-02-28
Occasional Calibration Phase-difference Modulation For Sagnac Interferometer App 20120134005 - Bergh; Ralph A.	2012-05-31
Interferometer Employing A Multi-waveguide Optical Loop Path And Fiber Optic Rotation Rate Sensor Employing Same App 20110037972 - Bergh; Ralph A.	2011-02-17
Signal processing for a Sagnac interferometer Grant 7,505,139 - Bergh March 17, 2	2009-03-17
Signal Processing For A Sagnac Interferometer App 20080218765 - Bergh; Ralph A.	2008-09-11
Kerr effect compensator for a fiber optic gyroscope Grant 6,046,810 - Sanders , et al. April 4, 2	2000-04-04
Vibration rectification error reducer for fiber optic gyroscope Grant 5,946,097 - Sanders , et al. August 31, 1	1999-08-31
Magnetically insensitive fiber optic rotation sensor Grant 5,602,642 - Bergh , et al. February 11, 1	1997-02-11
Apparatus and method for trimming of fiber optic winding Grant 5,506,923 - Goettsche , et al. April 9, 1	1996-04-09
Optical fiber sensor coil using reverse quadrupoles and method of winding same Grant 5,475,774 - Goettsche , et al. December 12, 1	1995-12-12
Apparatus and method for reducing phase errors in an interferometer Grant 5,153,676 - Bergh * October 6, 1	1992-10-06
Apparatus and method for reducing phase errors in an interferometer Grant 5,120,130 - Bergh June 9, 1	1992-06-09
Magneto-optic rotator Grant 4,733,938 - Lefevre , et al. March 29, 1	1988-03-29
Fiber optic rotation sensor utilizing a magnetic shield and an optical isolator Grant 4,671,658 - Shaw , et al. * June 9, 1	1987-06-09
Magneto-optic rotator for providing additive Faraday rotations in a loop of optical fiber Grant 4,615,582 - Lefevre , et al. October 7, 1	1986-10-07
Fiber optic dye amplifier Grant 4,603,940 - Shaw , et al. August 5, 1	1986-08-05
Fiber optic directional coupler Grant 4,601,541 - Shaw , et al. July 22, 1	1986-07-22
Fiber optic switchable coupler Grant 4,560,234 - Shaw , et al. December 24, 1	1985-12-24
Method of manufacturing a fiber optic directional coupler Grant 4,536,058 - Shaw , et al. August 20, 1	1985-08-20
Fiber optic directional coupler Grant 4,493,528 - Shaw , et al. January 15, 1	1985-01-15
Fiber optic rotation sensor Grant 4,410,275 - Shaw , et al. October 18, 1	1983-10-18
Polarizer and method Grant 4,386,822 - Bergh June 7, 1	1983-06-07

uspto.report is an independent third-party trademark research tool that is not affiliated, endorsed, or sponsored by the United States Patent and Trademark Office (USPTO) or any other governmental organization. The information provided by uspto.report is based on publicly available data at the time of writing and is intended for informational purposes only.

While we strive to provide accurate and up-to-date information, we do not guarantee the accuracy, completeness, reliability, or suitability of the information displayed on this site. The use of this site is at your own risk. Any reliance you place on such information is therefore strictly at your own risk.

All official trademark data, including owner information, should be verified by visiting the official USPTO website at www.uspto.gov. This site is not intended to replace professional legal advice and should not be used as a substitute for consulting with a legal professional who is knowledgeable about trademark law.