G01C 19/68
Lock-in prevention
G01C19/68 (Lock-in prevention) appears on 123 US grants and 16 published applications in this corpus.
Search patents in G01C- Granted patents
- 123
- Published applications
- 16
- Assignees
- 35
- Inventors
- 176
- Latest grant
- 22 Apr 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 5 | 0 |
| 1981 | 5 | 0 |
| 1982 | 6 | 0 |
| 1983 | 4 | 0 |
| 1984 | 5 | 0 |
| 1985 | 5 | 0 |
| 1986 | 4 | 0 |
| 1987 | 11 | 0 |
| 1988 | 6 | 0 |
| 1989 | 6 | 0 |
| 1990 | 1 | 0 |
| 1991 | 6 | 0 |
| 1992 | 4 | 0 |
| 1993 | 2 | 0 |
| 1994 | 7 | 0 |
| 1995 | 7 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 4 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 3 | 1 |
| 2003 | 1 | 1 |
| 2004 | 2 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 2 | 4 |
| 2012 | 1 | 1 |
| 2013 | 3 | 1 |
| 2014 | 0 | 1 |
| 2015 | 1 | 1 |
| 2016 | 1 | 1 |
| 2017 | 2 | 0 |
| 2018 | 0 | 0 |
| 2019 | 4 | 1 |
| 2020 | 1 | 0 |
| 2021 | 1 | 0 |
| 2022 | 0 | 0 |
| 2023 | 1 | 1 |
| 2024 | 0 | 0 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Ring laser gyroscope22 Apr 2025US 12,281,897 B2Japan Aviation Electronics Industry, Limited
- Dither motor apparatus with pickoff embedded drives for ring laser gyroscope26 Dec 2023US 11,852,483 B1Honeywell International Inc.
- Frequency pulling reduction in SBS laser23 Feb 2021US 10,928,200 B1Honeywell International Inc.
- Switching SBS gyro with fixed pump separation3 Nov 2020US 10,823,571 B1Honeywell International Inc.
- Rotation and acceleration sensor based on nondegenerate ring lasers20 Aug 2019US 10,386,187 B1Digital Optics Technologies, Inc.
- Precision mowing for turf mowers25 Sep 2025US 2025/0295060 A1Textron Inc.
- Ring laser gyroscope10 Aug 2023US 2023/0251093 A1Japan Aviation Electronics Industry, Limited
- Apparatus and method for diminishing mode lock induced error in stimulated brillouin scattering waveguide ring laser gyroscopes17 Jan 2019US 2019/0017824 A1Honeywell International Inc.
- Eliminating ring laser gyro backscatter19 May 2016US 2016/0138922 A1Honeywell International Inc.
- Ring Mirror Optical Rotation Sensor12 Mar 2015US 2015/0070706 A1King Abdulaziz City for Science and Technology
Most cited
By later US patents
- Sinusoidal noise injection into the dither of a ring laser gyroscope122US 5,416,584 AHoneywell Inc. · 1995
- Ring laser gyroscope dither drive system and method39US 4,981,359 ALitton Systems, Inc. · 1991
- Enhanced magnetic mirror34US 4,525,028 ARaytheon Company · 1985
- Spring for a ring laser gyro dither mechanism32US 4,349,183 ALitton Systems, Inc. · 1982
- Torsional vibration drive32US 5,063,321 ATeldix GmbH · 1991