G03B 21/11
For microfilm reading
Official title: for microfilm reading
G03B21/11 (For microfilm reading) appears on 453 US grants and 21 published applications in this corpus.
Search patents in G03B- Granted patents
- 453
- Published applications
- 21
- Assignees
- 97
- Inventors
- 495
- Latest grant
- 19 Oct 2021
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 33 | 0 |
| 1977 | 35 | 0 |
| 1978 | 38 | 0 |
| 1979 | 27 | 0 |
| 1980 | 26 | 0 |
| 1981 | 26 | 0 |
| 1982 | 23 | 0 |
| 1983 | 11 | 0 |
| 1984 | 18 | 0 |
| 1985 | 13 | 0 |
| 1986 | 14 | 0 |
| 1987 | 17 | 0 |
| 1988 | 20 | 0 |
| 1989 | 26 | 0 |
| 1990 | 25 | 0 |
| 1991 | 22 | 0 |
| 1992 | 17 | 0 |
| 1993 | 11 | 0 |
| 1994 | 7 | 0 |
| 1995 | 3 | 0 |
| 1996 | 3 | 0 |
| 1997 | 7 | 0 |
| 1998 | 7 | 0 |
| 1999 | 4 | 0 |
| 2000 | 4 | 0 |
| 2001 | 2 | 1 |
| 2002 | 1 | 0 |
| 2003 | 2 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 1 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 1 |
| 2009 | 0 | 1 |
| 2010 | 0 | 2 |
| 2011 | 0 | 0 |
| 2012 | 1 | 1 |
| 2013 | 2 | 2 |
| 2014 | 0 | 1 |
| 2015 | 2 | 2 |
| 2016 | 0 | 1 |
| 2017 | 0 | 1 |
| 2018 | 2 | 2 |
| 2019 | 0 | 2 |
| 2020 | 0 | 0 |
| 2021 | 3 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Automatic microform carrier systems and methods19 Oct 2021US 11,150,544 B2e-ImageData Corp.
- Image mark sensing systems and methods23 Mar 2021US 10,958,827 B2E-Image Data Corporation
- Image mark sensing systems and methods23 Feb 2021US 10,929,700 B2E-Image Data Corporation
- Spontaneous pop-up display device18 Dec 2018US 10,156,781 B2Arovia, Inc.
- Image mark sensing systems and methods20 Nov 2018US 10,133,946 B2E-Image Data Corporation
- Optical glass module and snoot17 Jul 2025US 2025/0231385 A1
- Automatic microform carrier systems and methods24 Oct 2019US 2019/0324354 A1e-lmageData Corp.
- Image mark sensing systems and methods14 Mar 2019US 2019/0080191 A1e-lmage Data Corp.
- Digital microform imaging apparatus27 Dec 2018US 2018/0372989 A1e-ImageData Corp.
- Improved Spontaneous Pop-Up Display Device4 Oct 2018US 2018/0284589 A1Arovia, Inc.
Most cited
By later US patents
- Projector comprising a microcomputer for controlling zoom and focus adjustments utilizing pattern generation and calculation means94US 6,592,228 B1Matsushita Electric Industrial Co., Ltd. · 2003
- Point array sheet lighting apparatus82US 4,151,582 AIzon Corporation · 1979
- Microfilm and microfilm printer35US 4,693,591 AMinolta Camera Kabushiki Kaisha · 1987
- Image display apparatus31US 5,028,128 ACanon Kabushiki Kaisha · 1991
- Electronically controlled microfilm photographic image utilization device30US 4,174,890 ABell & Howell Company · 1979