B43K 21/02
Writing-core feeding mechanisms
B43K21/02 (Writing-core feeding mechanisms) appears on 311 US grants and 147 published applications in this corpus.
Search patents in B43K- Granted patents
- 311
- Published applications
- 147
- Assignees
- 87
- Inventors
- 311
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
| 1979 | 7 | 0 |
| 1980 | 6 | 0 |
| 1981 | 8 | 0 |
| 1982 | 11 | 0 |
| 1983 | 5 | 0 |
| 1984 | 5 | 0 |
| 1985 | 9 | 0 |
| 1986 | 11 | 0 |
| 1987 | 10 | 0 |
| 1988 | 4 | 0 |
| 1989 | 11 | 0 |
| 1990 | 12 | 0 |
| 1991 | 13 | 0 |
| 1992 | 8 | 0 |
| 1993 | 6 | 0 |
| 1994 | 5 | 0 |
| 1995 | 1 | 0 |
| 1996 | 4 | 0 |
| 1997 | 5 | 0 |
| 1998 | 8 | 0 |
| 1999 | 9 | 0 |
| 2000 | 9 | 0 |
| 2001 | 8 | 3 |
| 2002 | 6 | 6 |
| 2003 | 4 | 3 |
| 2004 | 5 | 8 |
| 2005 | 6 | 3 |
| 2006 | 6 | 5 |
| 2007 | 6 | 12 |
| 2008 | 4 | 5 |
| 2009 | 2 | 7 |
| 2010 | 12 | 9 |
| 2011 | 2 | 9 |
| 2012 | 2 | 5 |
| 2013 | 8 | 3 |
| 2014 | 4 | 4 |
| 2015 | 2 | 12 |
| 2016 | 7 | 4 |
| 2017 | 7 | 2 |
| 2018 | 3 | 8 |
| 2019 | 10 | 13 |
| 2020 | 7 | 6 |
| 2021 | 5 | 4 |
| 2022 | 3 | 6 |
| 2023 | 4 | 1 |
| 2024 | 5 | 6 |
| 2025 | 4 | 2 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B43K 21/16With stepwise feed of writing-cores126
- B43K 21/22Writing-cores gripping means113
- B43K 21/027With sliding tubelike writing-core guide76
- B43K 21/08With the writing-cores fed by screws59
- B43K 21/06With the writing-cores fed by means sliding in longitudinally-slotted casings20
- B43K 21/04With the writing-cores brought into position by gravity10
Recent patents
- Marking tool22 Sep 2026US 12,741,479 B2Milwaukee Electric Tool Corporation
- Replaceable cartridge for a writing instrument and method thereof12 May 2026US 12,623,482 B2Societe BIC
- Press-type makeup pen30 Dec 2025US 12,507,785 B2Shya Hsin Packaging Industry (China) Co., Ltd.
- Cosmetic applicator or component thereof with special thread spindle drive23 Dec 2025US 12,501,987 B2A. W. Faber-Castell Cosmetics GmbH
- Apparatus for adjustably retaining an expendable medium for writing and/or drawing19 Aug 2025US 12,391,060 B1Crayola LLC
- Mechanical pencil5 Feb 2026US 2026/0034828 A1Mitsubishi Pencil Company, Limited
- Press-type makeup pen7 Aug 2025US 2025/0248504 A1Shya Hsin Packaging Industry (China) Co., Ltd.
- A replaceable cartridge for a writing instrument and method thereof9 Jan 2025US 2025/0010654 A1Societe BIC
- Mechanical pencil21 Nov 2024US 2024/0383270 A1Mitsubishi Pencil Company, Limited
- Rear-pressing anti-misoperation double-ended eyebrow pencil10 Oct 2024US 2024/0335022 A1Shya Hsin Packaging Industry (China) Co., Ltd.
Most cited
By later US patents
- Rodlike body feeding device41US 5,577,850 APentel Kabushiki Kaisha · 1996
- Applicator device for a stick of spreadable material34US 5,018,892 ASchwan-Stabilo Schwanhaeusser GmbH & Co. · 1991
- Writing stylus33US 7,567,242 B2LeapFrog Enterprises, Inc. · 2009
- Card type writing instrument32US 4,815,880 AZebra Co., Ltd. · 1989
- Applicator device30US 5,336,005 ASchwan-Stabilo Schwanhaeusser GmbH & Co. · 1994