B41J 2/33515
Heater layers
Official title: {Heater layers}
B41J2/33515 (Heater layers) appears on 170 US grants and 131 published applications in this corpus.
Search patents in B41J- Granted patents
- 170
- Published applications
- 131
- Assignees
- 58
- Inventors
- 301
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 2 | 0 |
| 1993 | 4 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 3 | 0 |
| 2000 | 5 | 0 |
| 2001 | 4 | 0 |
| 2002 | 8 | 3 |
| 2003 | 2 | 1 |
| 2004 | 2 | 2 |
| 2005 | 1 | 5 |
| 2006 | 3 | 3 |
| 2007 | 3 | 3 |
| 2008 | 3 | 3 |
| 2009 | 3 | 6 |
| 2010 | 2 | 5 |
| 2011 | 6 | 0 |
| 2012 | 4 | 3 |
| 2013 | 3 | 6 |
| 2014 | 2 | 3 |
| 2015 | 3 | 4 |
| 2016 | 5 | 6 |
| 2017 | 7 | 7 |
| 2018 | 7 | 12 |
| 2019 | 6 | 8 |
| 2020 | 12 | 8 |
| 2021 | 5 | 8 |
| 2022 | 8 | 11 |
| 2023 | 2 | 8 |
| 2024 | 11 | 4 |
| 2025 | 3 | 6 |
| 2026 | 7 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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Most cited
By later US patents
- Thin film thermal print head36US 3,973,106 AHewlett-Packard Company · 1976
- Thermal recording head33US 5,444,475 AHitachi Koki Co., Ltd. · 1995
- Thermal head33US 6,002,418 AFuji Photo Film Co., Ltd. · 1999
- Thermal printing head and method of making same30US 4,194,108 ATDK Electronics Co., Ltd. · 1980
- Thin film thermal print head25US 4,298,786 AExtel Corporation · 1981