B41J 2/1631
Photolithography
Official title: {photolithography}
B41J2/1631 (Photolithography) appears on 3,951 US grants and 3,516 published applications in this corpus.
Search patents in B41J- Granted patents
- 3,951
- Published applications
- 3,516
- Assignees
- 239
- Inventors
- 2,656
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 5 | 0 |
| 1984 | 6 | 0 |
| 1985 | 6 | 0 |
| 1986 | 10 | 0 |
| 1987 | 15 | 0 |
| 1988 | 16 | 0 |
| 1989 | 24 | 0 |
| 1990 | 20 | 0 |
| 1991 | 15 | 0 |
| 1992 | 24 | 0 |
| 1993 | 18 | 0 |
| 1994 | 26 | 0 |
| 1995 | 35 | 0 |
| 1996 | 36 | 0 |
| 1997 | 64 | 0 |
| 1998 | 71 | 0 |
| 1999 | 70 | 0 |
| 2000 | 94 | 0 |
| 2001 | 180 | 51 |
| 2002 | 185 | 177 |
| 2003 | 163 | 158 |
| 2004 | 145 | 279 |
| 2005 | 184 | 327 |
| 2006 | 231 | 264 |
| 2007 | 201 | 258 |
| 2008 | 214 | 281 |
| 2009 | 223 | 332 |
| 2010 | 255 | 214 |
| 2011 | 287 | 136 |
| 2012 | 159 | 113 |
| 2013 | 124 | 125 |
| 2014 | 117 | 90 |
| 2015 | 135 | 81 |
| 2016 | 79 | 76 |
| 2017 | 72 | 75 |
| 2018 | 69 | 84 |
| 2019 | 80 | 62 |
| 2020 | 53 | 58 |
| 2021 | 59 | 46 |
| 2022 | 36 | 51 |
| 2023 | 39 | 53 |
| 2024 | 41 | 43 |
| 2025 | 32 | 50 |
| 2026 | 24 | 32 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Liquid ejection head8 Sep 2026US 12,728,644 B2Canon Kabushiki Kaisha
- Liquid discharge head and liquid discharge apparatus25 Aug 2026US 12,715,214 B2Ricoh Company, Ltd.
- Substrate for liquid ejection head, liquid ejection head, and method for manufacturing substrate for liquid ejection head18 Aug 2026US 12,709,096 B2Canon Kabushiki Kaisha
- Liquid ejection head11 Aug 2026US 12,703,182 B2RISO Technologies Corporation
- Liquid discharge head substrate, liquid discharge head, liquid discharge apparatus, and manufacturing method of liquid discharge head substrate7 Jul 2026US 12,673,492 B2Canon Kabushiki Kaisha
- Method of manufacturing nozzle plate and nozzle plate13 Aug 2026US 2026/0233525 A1Seiko Epson Corporation
- Method for fabricating heating device13 Aug 2026US 2026/0233537 A1Innolux Corporation
- Liquid discharge head substrate and liquid discharge head6 Aug 2026US 2026/0225365 A1Canon Kabushiki Kaisha
- Method of manufacturing liquid discharging head and liquid discharging head30 Jul 2026US 2026/0217031 A1Canon Kabushiki Kaisha
- Liquid ejection substrate and liquid ejection head9 Jul 2026US 2026/0192565 A1Canon Kabushiki Kaisha
Most cited
By later US patents
- Liquid jet recording head1,616US 4,558,333 ACanon Kabushiki Kaisha · 1985
- Ink jet head and a method of manufacturing thereof420US 5,666,141 ASharp Kabushiki Kaisha · 1997
- Polymer-based micromachining for microfluidic devices351US 6,136,212 AThe Regents of the University of Michigan · 2000
- Ink jet print device and print head or print apparatus using the same348US 6,019,457 ACanon Information Systems Research Australia Pty. Ltd. · 2000
- Method of fabricating bubblejet print devices using semiconductor fabrication techniques311US 5,841,452 ACanon Information Systems Research Australia Pty. Ltd. · 1998