B43K 7/02
Ink reservoirs
Official title: Ink reservoirs; Ink cartridges (B43K7/01 takes precedence)
B43K7/02 (Ink reservoirs) appears on 359 US grants and 325 published applications in this corpus.
Search patents in B43K- Granted patents
- 359
- Published applications
- 325
- Assignees
- 85
- Inventors
- 402
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 4 | 0 |
| 1986 | 4 | 0 |
| 1987 | 0 | 0 |
| 1988 | 5 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 7 | 0 |
| 2000 | 9 | 0 |
| 2001 | 7 | 0 |
| 2002 | 12 | 8 |
| 2003 | 11 | 22 |
| 2004 | 16 | 16 |
| 2005 | 10 | 32 |
| 2006 | 26 | 18 |
| 2007 | 15 | 18 |
| 2008 | 27 | 30 |
| 2009 | 21 | 30 |
| 2010 | 20 | 28 |
| 2011 | 33 | 11 |
| 2012 | 13 | 11 |
| 2013 | 10 | 7 |
| 2014 | 5 | 6 |
| 2015 | 8 | 12 |
| 2016 | 8 | 9 |
| 2017 | 7 | 3 |
| 2018 | 10 | 4 |
| 2019 | 7 | 12 |
| 2020 | 7 | 8 |
| 2021 | 6 | 7 |
| 2022 | 6 | 7 |
| 2023 | 7 | 6 |
| 2024 | 7 | 5 |
| 2025 | 9 | 10 |
| 2026 | 3 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Writing implement29 Sep 2026US 12,746,776 B2Kabushiki Kaisha Pilot Corporation
- Drawing material container cartridge and drawing material container set24 Mar 2026US 12,583,248 B2Tokiwa Corporation
- Writing instrument part, method for manufacturing writing instrument part, and writing instrument10 Feb 2026US 12,545,047 B2Mitsubishi Pencil Company, Limited
- Ink composition for water-based ballpoint pen14 Oct 2025US 12,441,899 B2Mitsubishi Pencil Company, Limited
- Writing instrument30 Sep 2025US 12,429,961 B2BIC Violex Single Member S.A.
- Oil-in-water ink composition for writing utensils3 Sep 2026US 2026/0258263 A1Mitsubishi Pencil Company, Limited
- Oil-in-water ink composition for writing utensils9 Jul 2026US 2026/0193480 A1Mitsubishi Pencil Company, Limited
- Writing instrument refill25 Jun 2026US 2026/0175613 A1KABUSHIKI KAISHA PILOT CORPORATION (also trading as PILOT CORPORATION)
- Plug structure, liquid cartridge, and pen30 Apr 2026US 2026/0116118 A1Lion Pencil Co., Ltd.
- Plasmonic inks with vivid colors26 Feb 2026US 2026/0055285 A1Centre National De La Recherche Scientifique
Most cited
By later US patents
- Printer consumable cartridge165US 6,290,349 B1Silverbrook Research Pty Ltd · 2001
- Multicolor writing and painting instruments with multiple, bundled, hard, wear-resistant nibs106US 8,403,577 B2University of Southern California · 2013
- System for data transfer81US 6,822,639 B1Silverbrook Research Pty Ltd · 2004
- Method and system for note taking77US 6,681,045 B1Silverbrook Research Pty Ltd · 2004
- Method of distributing documents having common components to a plurality of destinations59US 6,549,935 B1Silverbrook Research Pty Ltd · 2003