B43K 21/003
Propelling pencils: with lead sections or lead cartridges
Official title: {with lead sections or lead cartridges}
B43K21/003 (Propelling pencils: with lead sections or lead cartridges) appears on 53 US grants and 34 published applications in this corpus.
Search patents in B43K- Granted patents
- 53
- Published applications
- 34
- Assignees
- 19
- Inventors
- 82
- Latest grant
- 28 May 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 4 | 0 |
| 1987 | 3 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 8 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 1 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 0 |
| 2005 | 2 | 1 |
| 2006 | 0 | 0 |
| 2007 | 2 | 4 |
| 2008 | 0 | 1 |
| 2009 | 0 | 1 |
| 2010 | 5 | 7 |
| 2011 | 0 | 3 |
| 2012 | 1 | 1 |
| 2013 | 3 | 0 |
| 2014 | 1 | 1 |
| 2015 | 0 | 1 |
| 2016 | 2 | 1 |
| 2017 | 0 | 1 |
| 2018 | 1 | 1 |
| 2019 | 2 | 3 |
| 2020 | 0 | 1 |
| 2021 | 1 | 1 |
| 2022 | 2 | 2 |
| 2023 | 0 | 0 |
| 2024 | 1 | 1 |
| 2025 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Mechanical pencil28 May 2024US 11,993,097 B2Kabushiki Kaisha Pilot Corporation
- Multi-function writing instrument comprising a lead-holder system16 Aug 2022US 11,413,902 B2Societe BIC
- Multi-function writing instrument comprising a leadholder system25 Jan 2022US 11,230,137 B2Societe BIC
- Feeding pencil6 Apr 2021US 10,967,667 B2
- Mechanical pencil unit and writing utensil with the mechanical pencil unit17 Dec 2019US 10,507,685 B2Zebra Co., Ltd.
- Erasable, unburnt colored lead for writing, drawing and painting devices or erasable, unburnt colored chalk, writing, painting or drawing device comprising an erasable, unburnt colored lead and method for manufacturing an erasable, colored lead or chalk7 Aug 2025US 2025/0250455 A1
- Thermoplastic resin composition and use thereof14 Nov 2024US 2024/0376298 A1Mitsui Chemicals, Inc.
- Mechanical pencil29 Dec 2022US 2022/0410614 A1KABUSHIKI KAISHA PILOT CORPORATION (also trading as PILOT CORPORATION)
- Electronic mechanical pencil1 Sep 2022US 2022/0274438 A1
- Multi-function writing instrument comprising a lead-holder system18 Mar 2021US 2021/0078353 A1Societe BIC
Most cited
By later US patents
- Tubular yielding holder for various size pens32US 6,202,862 B12001
- Building blocks type writing instrument27US 6,149,330 APioneer Industrial Corporation · 2000
- Automatic writing apparatus for segmental writing elements with caps17US 6,161,976 APioneer Industrial Corporation · 2000
- Mechanically controlled-writing apparatus with presharpened pencil lead elements14US 4,966,478 A1990
- Retractable tip mechanical pencil assembly13US 6,979,142 B12005