B43L 23/002
Sharpeners for pencils or leads: with continuous conveying means for the pencil
Official title: {with continuous conveying means for the pencil}
B43L23/002 (Sharpeners for pencils or leads: with continuous conveying means for the pencil) appears on 11 US grants and 14 published applications in this corpus.
Search patents in B43L- Granted patents
- 11
- Published applications
- 14
- Assignees
- 8
- Inventors
- 19
- Latest grant
- 6 Dec 2022
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| Year | Granted patents | Published applications |
|---|---|---|
| 2006 | 0 | 2 |
| 2007 | 1 | 0 |
| 2008 | 0 | 3 |
| 2009 | 2 | 2 |
| 2010 | 3 | 0 |
| 2011 | 1 | 2 |
| 2012 | 1 | 0 |
| 2013 | 1 | 1 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 0 | 0 |
| 2020 | 1 | 0 |
| 2021 | 0 | 1 |
| 2022 | 1 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 0 |
| 2026 | 0 | 2 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Self-adaptive pencil feeding mechanism6 Dec 2022US 11,518,186 B2Ningbo Tianhong Stationery Co., Ltd.
- Electric pencil sharpener7 Jul 2020US 10,703,129 B2Ningbo Weishu Stationery Co., Ltd
- Hand-cranked pencil sharpeners11 Jun 2013US 8,459,317 B2Yurisheng Electronic (Shenzhen) Co., Ltd
- Pencil sharpener21 Feb 2012US 8,118,071 B2
- Pencil sharpener29 Mar 2011US 7,913,731 B2
- Pencil Clamping Mechanism for Pencil Sharpener26 Mar 2026US 2026/0084458 A1Deli Group Co. Ltd
- Pencil feeding mechanism and pencil sharpener provided with pencil feeding mechanism26 Mar 2026US 2026/0084459 A1Deli Group Co. Ltd
- Self-adaptive Pencil Feeding Mechanism1 Jul 2021US 2021/0197613 A1Ningbo Tianhong Stationery Co., Ltd.
- Electric pencil sharpener8 Nov 2018US 2018/0319203 A1Ningbo Weishu Stationery Co., Ltd
- Automatic pencil-feeding device for pencil sharpener3 Oct 2013US 2013/0255835 A1Fujian Soundy Enterprise Co., Ltd.
Most cited
By later US patents
- Pencil sharpener7US 7,913,731 B22011
- Hand-cranked pencil sharpeners6US 8,459,317 B2Yurisheng Electronic (Shenzhen) Co., Ltd · 2013
- Automatic pencil sharpener5US 7,240,703 B2Ringsun (Shenzhen) Industrial Limited · 2007
- Pencil sharpener4US 7,546,858 B2Acme United Corporation · 2009
- Electric multi-pencil sharpener4US 7,699,082 B2Yurisheng Electronic (Shenzhen) Co., Ltd · 2010