B43K 23/12
For pens
Official title: for pens {(caps co-operating with retractable nibs B43K5/165)}
B43K23/12 (For pens) appears on 368 US grants and 262 published applications in this corpus.
Search patents in B43K- Granted patents
- 368
- Published applications
- 262
- Assignees
- 159
- Inventors
- 622
- Latest grant
- 25 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 4 | 0 |
| 1978 | 2 | 0 |
| 1979 | 4 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 7 | 0 |
| 1986 | 5 | 0 |
| 1987 | 7 | 0 |
| 1988 | 4 | 0 |
| 1989 | 5 | 0 |
| 1990 | 8 | 0 |
| 1991 | 15 | 0 |
| 1992 | 5 | 0 |
| 1993 | 6 | 0 |
| 1994 | 9 | 0 |
| 1995 | 7 | 0 |
| 1996 | 4 | 0 |
| 1997 | 7 | 0 |
| 1998 | 7 | 0 |
| 1999 | 17 | 0 |
| 2000 | 7 | 0 |
| 2001 | 8 | 2 |
| 2002 | 6 | 5 |
| 2003 | 1 | 3 |
| 2004 | 8 | 11 |
| 2005 | 11 | 15 |
| 2006 | 8 | 17 |
| 2007 | 7 | 13 |
| 2008 | 9 | 13 |
| 2009 | 5 | 11 |
| 2010 | 8 | 15 |
| 2011 | 9 | 9 |
| 2012 | 7 | 15 |
| 2013 | 9 | 13 |
| 2014 | 7 | 10 |
| 2015 | 15 | 17 |
| 2016 | 13 | 13 |
| 2017 | 17 | 10 |
| 2018 | 11 | 6 |
| 2019 | 8 | 6 |
| 2020 | 9 | 6 |
| 2021 | 7 | 15 |
| 2022 | 7 | 8 |
| 2023 | 14 | 12 |
| 2024 | 12 | 7 |
| 2025 | 9 | 7 |
| 2026 | 0 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Porous cap felt pen25 Nov 2025US 12,479,232 B2BIC Violex Single Member S.A.
- Writing implement1 Jul 2025US 12,344,025 B1
- Writing instrument10 Jun 2025US 12,325,255 B2Mitsubishi Pencil Company, Limited
- Pocket size pen10 Jun 2025US 12,325,257 B2
- Thermochromic writing instrument15 Apr 2025US 12,275,269 B2Kabushiki Kaisha Pilot Corporation
- Magnetic marker device30 Jul 2026US 2026/0215561 A1
- Soft elastomeric seal for a writing instrument4 Jun 2026US 2026/0152022 A1BIC Violex Single Member S.A.
- Plug structure, liquid cartridge, and pen30 Apr 2026US 2026/0116118 A1Lion Pencil Co., Ltd.
- Writing instrument and writing part replacement unit25 Dec 2025US 2025/0388041 A1Mitsubishi Pencil Company, Limited
- Liquid applicator device6 Nov 2025US 2025/0340081 A1Flocon, Inc.
Most cited
By later US patents
- Ink and eraser of the ink89US 4,557,618 APentel Kabushiki Kaisha · 1985
- Pen cap stylus for use with touch screens73US 6,227,743 B12001
- Input pen with attached writing implement55US 5,564,850 APilot Precision Kabushiki Kaisha · 1996
- Felt pen having two end caps52US 4,509,875 AColleen Pencil Co., Ltd. · 1985
- Card-shaped, hinged writing instrument52US 5,678,939 A1997