H04N 9/28
Arrangements for convergence or focusing
H04N9/28 (Arrangements for convergence or focusing) appears on 334 US grants and 68 published applications in this corpus.
Search patents in H04N- Granted patents
- 334
- Published applications
- 68
- Assignees
- 118
- Inventors
- 476
- Latest grant
- 21 Jan 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 4 | 0 |
| 1978 | 6 | 0 |
| 1979 | 2 | 0 |
| 1980 | 6 | 0 |
| 1981 | 3 | 0 |
| 1982 | 4 | 0 |
| 1983 | 9 | 0 |
| 1984 | 6 | 0 |
| 1985 | 5 | 0 |
| 1986 | 6 | 0 |
| 1987 | 10 | 0 |
| 1988 | 6 | 0 |
| 1989 | 11 | 0 |
| 1990 | 13 | 0 |
| 1991 | 21 | 0 |
| 1992 | 9 | 0 |
| 1993 | 15 | 0 |
| 1994 | 9 | 0 |
| 1995 | 19 | 0 |
| 1996 | 21 | 0 |
| 1997 | 10 | 0 |
| 1998 | 15 | 0 |
| 1999 | 15 | 0 |
| 2000 | 10 | 0 |
| 2001 | 13 | 5 |
| 2002 | 19 | 11 |
| 2003 | 11 | 13 |
| 2004 | 12 | 5 |
| 2005 | 4 | 19 |
| 2006 | 10 | 5 |
| 2007 | 9 | 2 |
| 2008 | 6 | 0 |
| 2009 | 0 | 1 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 1 | 1 |
| 2016 | 1 | 1 |
| 2017 | 1 | 1 |
| 2018 | 0 | 1 |
| 2019 | 1 | 1 |
| 2020 | 0 | 0 |
| 2021 | 1 | 0 |
| 2022 | 0 | 1 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Control device, projection system, control method, and control program21 Jan 2025US 12,207,028 B2FUJIFILM Corporation
- Projecting device4 May 2021US 10,999,565 B2Panasonic Intellectual Property Management Co., Ltd.
- Image projecting system, information processing apparatus, and method for image projecting21 May 2019US 10,298,892 B2Ricoh Company, Ltd.
- Illumination apparatus interposable during examination procedure17 Oct 2017US 9,794,453 B2
- Image processing device, projector, and image processing method21 Jun 2016US 9,373,161 B2Seiko Epson Corporation
- Control device, projection system, control method, and control program28 Apr 2022US 2022/0132080 A1FUJIFILM Corporation
- Projecting device10 Jan 2019US 2019/0014295 A1Panasonic Intellectual Property Management Co., Ltd.
- Image projecting system, information processing apparatus, and method for image projecting1 Mar 2018US 2018/0063491 A1Ricoh Company, Ltd.
- Projecting device14 Sep 2017US 2017/0264871 A1Panasonic Intellectual Property Management Co., Ltd.
- Illumination apparatus interposable during examination procedure7 Apr 2016US 2016/0100095 A1
Most cited
By later US patents
- Regulating focus in accordance with relationship of features of a person's eyes173US 5,861,936 AGillan Holdings Limited · 1999
- Lens systems for projection televisions122US 6,791,629 B23M Innovative Properties Company · 2004
- Opto sensor signal detector108US 6,297,859 B1Thomson Licensing · 2001
- Projection display device with negative feedback loop to correct all the faults of the projected image91US 5,231,481 AThomson-CSF · 1993
- Lens systems for projection televisions90US 7,133,084 B23M Innovative Properties Company · 2006