G03B 27/32
Projection printing apparatus
Official title: Projection printing apparatus, e.g. enlarger, copying camera
G03B27/32 (Projection printing apparatus) appears on 4,971 US grants and 1,824 published applications in this corpus.
Search patents in G03B- Granted patents
- 4,971
- Published applications
- 1,824
- Assignees
- 735
- Inventors
- 6,179
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 100 | 0 |
| 1977 | 135 | 0 |
| 1978 | 144 | 0 |
| 1979 | 91 | 0 |
| 1980 | 127 | 0 |
| 1981 | 121 | 0 |
| 1982 | 128 | 0 |
| 1983 | 120 | 0 |
| 1984 | 162 | 0 |
| 1985 | 111 | 0 |
| 1986 | 134 | 0 |
| 1987 | 145 | 0 |
| 1988 | 129 | 0 |
| 1989 | 177 | 0 |
| 1990 | 235 | 0 |
| 1991 | 229 | 0 |
| 1992 | 158 | 0 |
| 1993 | 114 | 0 |
| 1994 | 98 | 0 |
| 1995 | 88 | 0 |
| 1996 | 88 | 0 |
| 1997 | 107 | 0 |
| 1998 | 136 | 0 |
| 1999 | 123 | 0 |
| 2000 | 99 | 0 |
| 2001 | 94 | 31 |
| 2002 | 85 | 114 |
| 2003 | 82 | 88 |
| 2004 | 115 | 119 |
| 2005 | 86 | 136 |
| 2006 | 101 | 125 |
| 2007 | 84 | 140 |
| 2008 | 83 | 165 |
| 2009 | 76 | 196 |
| 2010 | 93 | 231 |
| 2011 | 113 | 125 |
| 2012 | 124 | 56 |
| 2013 | 124 | 56 |
| 2014 | 104 | 43 |
| 2015 | 72 | 29 |
| 2016 | 61 | 24 |
| 2017 | 36 | 25 |
| 2018 | 34 | 37 |
| 2019 | 30 | 25 |
| 2020 | 25 | 20 |
| 2021 | 16 | 15 |
| 2022 | 8 | 4 |
| 2023 | 10 | 7 |
| 2024 | 7 | 9 |
| 2025 | 8 | 4 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- G03B 27/52Details3,390
- G03B 27/46For automatic sequential copying of different originals626
- G03B 27/42For automatic sequential copying of the same original401
- G03B 27/323Copying cameras122
- G03B 27/34Means for automatic focusing therefor97
- G03B 27/50With slit or like diaphragm moving over original for progressive exposure91
- G03B 27/326Enlargers29
- G03B 27/44For multiple copying of the same original at the same time23
Recent patents
- Reticle thermal expansion calibration method capable of improving sub-recipe21 Apr 2026US 12,607,584 B2United Semiconductor (Xiamen) Co., Ltd.
- Printer and digital camera including printer23 Dec 2025US 12,504,669 B2FUJIFILM Corporation
- Optical device2 Sep 2025US 12,405,548 B2Toshiba Tec Kabushiki Kaisha
- Automatic document feeder29 Jul 2025US 12,371,288 B2Foxlink Image Technology Co., Ltd.
- Print head13 May 2025US 12,298,679 B2Toshiba Tec Kabushiki Kaisha
- Optical device4 Dec 2025US 2025/0370366 A1Toshiba Tec Kabushiki Kaisha
- Optical unit and optical line sensor having same12 Jun 2025US 2025/0189456 A1Vienex Corporation
- Image forming apparatus8 May 2025US 2025/0147448 A1Canon Kabushiki Kaisha
- Print head27 Feb 2025US 2025/0068093 A1Toshiba Tec Kabushiki Kaisha
- Reticle Thermal Expansion Calibration Method Capable of Improving Sub-Recipe10 Oct 2024US 2024/0337613 A1United Semiconductor (Xiamen) Co., Ltd.
Most cited
By later US patents
- Projection exposure apparatus and method605US 6,122,036 ANikon Corporation · 2000
- Sliding seal469US 6,600,547 B2Nikon Corporation · 2003
- Coater/developer, coating/developing method, and storage medium469US 7,591,601 B2Tokyo Electron Limited · 2009
- Exposure apparatus, optical projection apparatus and a method for adjusting the optical projection apparatus256US 6,795,169 B2Nikon Corporation · 2004
- Lithographic apparatus, device manufacturing method, and device manufactured thereby234US 6,961,116 B2ASML Netherlands B. V. · 2005