G01C 21/22
Plotting boards
G01C21/22 (Plotting boards) appears on 76 US grants and 33 published applications in this corpus.
Search patents in G01C- Granted patents
- 76
- Published applications
- 33
- Assignees
- 38
- Inventors
- 158
- Latest grant
- 15 Jul 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 4 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 4 | 0 |
| 1985 | 3 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 2 | 1 |
| 2003 | 0 | 1 |
| 2004 | 2 | 1 |
| 2005 | 0 | 1 |
| 2006 | 1 | 1 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 2 |
| 2011 | 0 | 0 |
| 2012 | 1 | 2 |
| 2013 | 2 | 1 |
| 2014 | 0 | 1 |
| 2015 | 4 | 2 |
| 2016 | 1 | 1 |
| 2017 | 1 | 0 |
| 2018 | 1 | 1 |
| 2019 | 0 | 4 |
| 2020 | 0 | 3 |
| 2021 | 3 | 4 |
| 2022 | 1 | 2 |
| 2023 | 7 | 1 |
| 2024 | 0 | 2 |
| 2025 | 1 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Nautical chart processing device and nautical chart processing method15 Jul 2025US 12,359,920 B2Furuno Electric Co., Ltd.
- Ship navigation assisting device3 Oct 2023US 11,776,411 B2Tokyo Keiki Co., Ltd.
- Positioning system and method26 Sep 2023US 11,768,074 B2The Corporation of Trinity House of Deptford Strond
- Boat25 Apr 2023US 11,634,204 B2Yamaha Hatsudoki Kabushiki Kaisha
- Nautical chart display device, nautical chart display method, and nautical chart display program28 Feb 2023US 11,592,296 B2Furuno Electric Co., Ltd.
- Navigation assistance device, navigation assistance method, and non-transitory computer-readable recording medium9 Apr 2026US 2026/0100132 A1Furuno Electric Co., Ltd.
- Method and apparatus for detecting unmanned aerial vehicle conflict based on airspace digital raster, and storage medium2 Jan 2025US 2025/0003755 A1Nanjing University of Aeronautics and Astronautics
- Robotic cleaner and method for controlling robotic cleaner14 Nov 2024US 2024/0377835 A1LG Electronics Inc.
- Method for navigation of an unmanned autonomous vehicle, unmanned autonomous vehicle, and its use5 Sep 2024US 2024/0295885 A1
- System and method for tracking of search targets via dynamic probabilistic occupancy map30 Nov 2023US 2023/0384802 A1Rockwell Collins, Inc.
Most cited
By later US patents
- Integrated cargo security system295US 4,688,244 A1987
- Method, apparatus, and computer program products for alerting surface vessels to hazardous conditions157US 6,469,664 B1Honeywell International Inc. · 2002
- Cartographic indicator system156US 4,360,876 AThomson-CSF · 1982
- Airborne arrangement for displaying a moving map155US 4,138,726 AThomson-CSF · 1979
- Method and device for assisting navigation124US 5,519,392 ASextant Avionique · 1996