B41M 5/305
With reversible electron-donor electron-acceptor compositions
Official title: {with reversible electron-donor electron-acceptor compositions}
B41M5/305 (With reversible electron-donor electron-acceptor compositions) appears on 240 US grants and 172 published applications in this corpus.
Search patents in B41M- Granted patents
- 240
- Published applications
- 172
- Assignees
- 48
- Inventors
- 280
- Latest grant
- 17 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 4 | 0 |
| 1993 | 6 | 0 |
| 1994 | 5 | 0 |
| 1995 | 5 | 0 |
| 1996 | 10 | 0 |
| 1997 | 10 | 0 |
| 1998 | 3 | 0 |
| 1999 | 20 | 0 |
| 2000 | 6 | 0 |
| 2001 | 11 | 3 |
| 2002 | 7 | 6 |
| 2003 | 8 | 9 |
| 2004 | 8 | 5 |
| 2005 | 3 | 10 |
| 2006 | 3 | 5 |
| 2007 | 2 | 9 |
| 2008 | 10 | 10 |
| 2009 | 6 | 7 |
| 2010 | 3 | 7 |
| 2011 | 4 | 7 |
| 2012 | 12 | 10 |
| 2013 | 12 | 6 |
| 2014 | 10 | 11 |
| 2015 | 3 | 4 |
| 2016 | 9 | 13 |
| 2017 | 13 | 9 |
| 2018 | 7 | 7 |
| 2019 | 2 | 4 |
| 2020 | 2 | 5 |
| 2021 | 4 | 14 |
| 2022 | 8 | 2 |
| 2023 | 5 | 5 |
| 2024 | 5 | 2 |
| 2025 | 3 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Laser containment structure for a laser printhead17 Feb 2026US 12,552,189 B2Zebra Technologies Corporation
- Drawing system and drawing method11 Nov 2025US 12,466,196 B2Sony Group Corporation
- Reversibly thermochromic composition, reversibly thermochromic microcapsule pigment encapsulating reversibly thermochromic composition, and writing instrument using reversibly thermochromic microcapsule pigment4 Nov 2025US 12,460,099 B2Kabushiki Kaisha Pilot Corporation
- Thermochromic pigment compositions21 Jan 2025US 12,202,994 B2Societe BIC
- Recording medium and exterior member19 Nov 2024US 12,145,388 B2Sony Group Corporation
- Reversibly thermochromic composition, reversibly thermochromic microcapsule pigment encapsulating reversibly thermochromic composition, and writing instrument using reversibly thermochromic microcapsule pigment5 Mar 2026US 2026/0062580 A1KABUSHIKI KAISHA PILOT CORPORATION (also trading as PILOT CORPORATION)
- Direct thermal ink with heat retention for enhanced imaging22 May 2025US 2025/0162339 A1Temptime Corporation
- Reversible recording medium and exterior member19 Dec 2024US 2024/0416671 A1Sony Corporation
- Drawing system and drawing method23 May 2024US 2024/0165983 A1Sony Group Corporation
- Reversibly thermochromic composition and reversibly thermochromic microcapsule pigment encapsulating the same30 Nov 2023US 2023/0383175 A1KABUSHIKI KAISHA PILOT CORPORATION (also trading as PILOT CORPORATION)
Most cited
By later US patents
- Thermochromic materials183US 4,028,118 AThe Pilot Ink Co., Ltd. · 1977
- Reversible thermosensitive recording medium and image forming and erasing method using the recording medium123US 6,579,826 B2Ricoh Company, Ltd. · 2003
- Thermochromic materials119US 4,425,161 A1984
- Thermochromatic materials107US 4,421,560 AThe Pilot Ink Co., Ltd. · 1983
- Reversible heat sensitive recording composition93US 4,720,301 AThe Pilot Ink Co., Ltd. · 1988