B43L 23/06
In which the pencils or leads are sharpened by only axial movement
Official title: in which the pencils or leads are sharpened by only axial movement against cutting blades
B43L23/06 (In which the pencils or leads are sharpened by only axial movement) appears on 21 US grants and 17 published applications in this corpus.
Search patents in B43L- Granted patents
- 21
- Published applications
- 17
- Assignees
- 11
- Inventors
- 35
- Latest grant
- 23 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2001 | 2 | 1 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 1 |
| 2005 | 1 | 0 |
| 2006 | 1 | 2 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 2 | 2 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 2 | 1 |
| 2013 | 2 | 0 |
| 2014 | 1 | 1 |
| 2015 | 0 | 1 |
| 2016 | 1 | 0 |
| 2017 | 1 | 2 |
| 2018 | 0 | 2 |
| 2019 | 1 | 1 |
| 2020 | 2 | 0 |
| 2021 | 1 | 0 |
| 2022 | 0 | 1 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
| 2025 | 1 | 0 |
By publication year.
Recent patents
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- Sharpener3 May 2018US 2018/0117953 A1Tokiwa Corporation
Most cited
By later US patents