B43K 21/24
Assembling, finishing, or repairing propelling pencils
Official title: Assembling, finishing, or repairing propelling pencils (making pencil writing-cores B43K19/18)
B43K21/24 (Assembling, finishing, or repairing propelling pencils) appears on 13 US grants and 9 published applications in this corpus.
Search patents in B43K- Granted patents
- 13
- Published applications
- 9
- Assignees
- 10
- Inventors
- 24
- Latest grant
- 17 Aug 2021
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 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 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 1 | 1 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 1 | 1 |
| 2011 | 1 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 1 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 2 |
| 2020 | 1 | 1 |
| 2021 | 3 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Mechanical pencil17 Aug 2021US 11,090,969 B2Kotobuki & Co., Ltd.
- Adjustment pen20 Apr 2021US 10,983,374 B2Boe Technology Group Co., Ltd.
- Feeding pencil6 Apr 2021US 10,967,667 B2
- Mechanical pencil with a side button and an eraser dispenser and a method of assembly2 Jun 2020US 10,668,766 B2Societe BIC
- Mechanical pencil30 Dec 2014US 8,920,057 B2Kotobuki & Co., Ltd.
- Mechanical pencil24 Jun 2021US 2021/0187994 A1Kotobuki & Co., Ltd.
- Adjustment Pen8 Oct 2020US 2020/0319483 A1Boe Technology Group Co., Ltd.
- Feeding pencil5 Dec 2019US 2019/0366755 A1Tokiwa Corporation
- Mechanical pencil with side button and eraser dispenser and method of assembly14 Feb 2019US 2019/0047320 A1Societe BIC
- Mechanical pencil13 Sep 2012US 2012/0230751 A1Kotobuki & Co., Ltd.
Most cited
By later US patents
- Automatic mechanical pencil and method of assembly thereof8US 7,237,972 B2Micro Co., Ltd. · 2007
- Apparatus and method for inserting indicia into pens5US 4,136,431 A1979
- Lead propelling mechanism for a mechanical pencil4US 4,627,756 AKotobuki & Co., Ltd. · 1986
- Stick-shaped article propelling container3US 7,997,821 B2Kotobuki & Co., Ltd. · 2011
- Knock type mechanical pencil connection2US 4,806,038 AParker Pen (Benelux) B.V. · 1989