B43K 24/02
Mechanisms for selecting, projecting, retracting or locking writing units: for locking a
Official title: for locking a single writing unit in only fully projected or retracted positions
B43K24/02 (Mechanisms for selecting, projecting, retracting or locking writing units: for locking a) appears on 620 US grants and 509 published applications in this corpus.
Search patents in B43K- Granted patents
- 620
- Published applications
- 509
- Assignees
- 181
- Inventors
- 668
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 4 | 0 |
| 1978 | 1 | 0 |
| 1979 | 4 | 0 |
| 1980 | 5 | 0 |
| 1981 | 3 | 0 |
| 1982 | 3 | 0 |
| 1983 | 4 | 0 |
| 1984 | 4 | 0 |
| 1985 | 8 | 0 |
| 1986 | 7 | 0 |
| 1987 | 4 | 0 |
| 1988 | 7 | 0 |
| 1989 | 3 | 0 |
| 1990 | 13 | 0 |
| 1991 | 9 | 0 |
| 1992 | 11 | 0 |
| 1993 | 5 | 0 |
| 1994 | 4 | 0 |
| 1995 | 4 | 0 |
| 1996 | 5 | 0 |
| 1997 | 4 | 0 |
| 1998 | 5 | 0 |
| 1999 | 15 | 0 |
| 2000 | 10 | 0 |
| 2001 | 18 | 4 |
| 2002 | 17 | 6 |
| 2003 | 9 | 22 |
| 2004 | 21 | 19 |
| 2005 | 21 | 39 |
| 2006 | 24 | 33 |
| 2007 | 19 | 25 |
| 2008 | 35 | 42 |
| 2009 | 27 | 39 |
| 2010 | 25 | 32 |
| 2011 | 35 | 25 |
| 2012 | 24 | 17 |
| 2013 | 12 | 8 |
| 2014 | 12 | 13 |
| 2015 | 12 | 32 |
| 2016 | 18 | 13 |
| 2017 | 16 | 9 |
| 2018 | 12 | 19 |
| 2019 | 17 | 22 |
| 2020 | 22 | 24 |
| 2021 | 19 | 15 |
| 2022 | 18 | 16 |
| 2023 | 11 | 12 |
| 2024 | 22 | 11 |
| 2025 | 4 | 8 |
| 2026 | 4 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Writing instrument6 Oct 2026US 12,752,569 B2Mitsubishi Pencil Company, Limited
- Electronic pen18 Aug 2026US 12,710,834 B2Wacom Co., Ltd.
- Non-sealing fluid-based writing instrument and non-drying writing fluid28 Jul 2026US 12,691,704 B2
- Retractable writing utensil7 Apr 2026US 12,594,782 B2Sakura Color Products Corporation
- Writing instrument26 Aug 2025US 12,397,579 B2Mitsubishi Pencil Company, Limited
- Rollable pen13 Aug 2026US 2026/0233551 A1
- Writing instrument23 Jul 2026US 2026/0208523 A1KABUSHIKI KAISHA PILOT CORPORATION (also trading as PILOT CORPORATION)
- Soft elastomeric seal for a writing instrument4 Jun 2026US 2026/0152022 A1BIC Violex Single Member S.A.
- Writing instrument19 Mar 2026US 2026/0077614 A1Mitsubishi Pencil Company, Limited
- Knock type writing instrument4 Dec 2025US 2025/0367959 A1Mitsubishi Pencil Company, Limited
Most cited
By later US patents
- Printer consumable cartridge165US 6,290,349 B1Silverbrook Research Pty Ltd · 2001
- Writing implement including an input stylus83US 5,913,629 Attools, LLC · 1999
- 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
- Light-emitting USB mobile disk-pen75US 6,773,192 B1PROSONIC Technology Corp. · 2004