B43L 23/085
One of the blades being used for shaping the writing point
Official title: {one of the blades being used for shaping the writing point}
B43L23/085 (One of the blades being used for shaping the writing point) appears on 10 US grants and 11 published applications in this corpus.
Search patents in B43L- Granted patents
- 10
- Published applications
- 11
- Assignees
- 9
- Inventors
- 12
- Latest grant
- 3 May 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 1 | 2 |
| 2004 | 1 | 2 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 0 |
| 2016 | 1 | 0 |
| 2017 | 0 | 1 |
| 2018 | 0 | 1 |
| 2019 | 0 | 1 |
| 2020 | 1 | 0 |
| 2021 | 0 | 1 |
| 2022 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Pencil sharpener having flexible storage cover3 May 2022US 11,318,779 B2Shanghai Lees Manufacturing Co., Ltd.
- Sharpener22 Dec 2020US 10,870,309 B2
- Adjustable pencil sharpener2 Feb 2016US 9,248,691 B2SDI Corporation
- Pencil sharpener29 Apr 2008US 7,363,714 B2KUM Limited
- Sharpener for soft-core pencils20 Dec 2005US 6,976,314 B2KUM Limited
- Pencil sharpener having flexible storage cover2 Sep 2021US 2021/0268830 A1Shanghai Lees Manufacturing Co., Ltd.
- Pencil Sharpening Device With Flashlight7 Feb 2019US 2019/0041053 A1
- Sharpener3 May 2018US 2018/0117953 A1Tokiwa Corporation
- Pencil sharpener16 Nov 2017US 2017/0326905 A1
- Adjustable pencil sharpener2 Jan 2014US 2014/0000119 A1SDI Corporation
Most cited
By later US patents
- Sharpener, specifically for cosmetic sticks14US 4,513,798 AA. Klebes GmbH & Co. K.G. Kunststoff- und Metallwarenfabrik · 1985
- Sharpener, in particular for soft-core pencils11US 6,397,479 B1KUM Limited · 2002
- Sharpener for soft-core pencils9US 6,301,791 B1KUM Limited · 2001
- Sharpener for soft-core pencils6US 6,976,314 B2KUM Limited · 2005
- Soft lead sharpener with pivotable profile knife3US 6,732,437 B2Eisen GmbH · 2004