B43L 23/08
In which the pencils or leads are sharpened mainly by rotational movement
Official title: in which the pencils or leads are sharpened mainly by rotational movement against cutting blades (B43L23/02 takes precedence)
B43L23/08 (In which the pencils or leads are sharpened mainly by rotational movement) appears on 122 US grants and 107 published applications in this corpus.
Search patents in B43L- Granted patents
- 122
- Published applications
- 107
- Assignees
- 48
- Inventors
- 180
- Latest grant
- 23 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 5 | 0 |
| 1999 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 4 | 1 |
| 2002 | 9 | 3 |
| 2003 | 5 | 3 |
| 2004 | 2 | 8 |
| 2005 | 7 | 9 |
| 2006 | 4 | 7 |
| 2007 | 2 | 12 |
| 2008 | 3 | 4 |
| 2009 | 3 | 6 |
| 2010 | 1 | 1 |
| 2011 | 3 | 5 |
| 2012 | 0 | 4 |
| 2013 | 1 | 2 |
| 2014 | 6 | 4 |
| 2015 | 1 | 7 |
| 2016 | 4 | 2 |
| 2017 | 3 | 7 |
| 2018 | 1 | 4 |
| 2019 | 4 | 6 |
| 2020 | 2 | 2 |
| 2021 | 5 | 2 |
| 2022 | 5 | 3 |
| 2023 | 3 | 1 |
| 2024 | 2 | 1 |
| 2025 | 2 | 1 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Cosmetic pencil sharpener23 Dec 2025US 12,502,908 B2
- Sharpener with variable heating element9 Dec 2025US 12,491,727 B2
- Pencil sharpener4 Jun 2024US 11,999,185 B2
- Cosmetic pencil cap with sharpener and waste container30 Jan 2024US 11,882,917 B1Modernmavenz
- Compact tool combining vacuum/blower, pencil sharpener, rubbery eraser, and storage space17 Oct 2023US 11,787,227 B2
- Fire shaver17 Sep 2026US 2026/0273795 A1Outdoor Element, LLC
- Pencil sharpener8 Jan 2026US 2026/0008294 A1SDI Corporation
- Marking Utensil Sharpener and Holder3 Apr 2025US 2025/0108656 A1C.H. Hason Co.
- Cosmetic pencil sharpener21 Mar 2024US 2024/0092117 A1
- Sharpener with variable heating element7 Dec 2023US 2023/0391132 A1
Most cited
By later US patents