B43K 1/02
Split nibs
B43K1/02 (Split nibs) appears on 22 US grants and 12 published applications in this corpus.
Search patents in B43K- Granted patents
- 22
- Published applications
- 12
- Assignees
- 13
- Inventors
- 29
- Latest grant
- 18 Oct 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 3 |
| 2014 | 2 | 0 |
| 2015 | 1 | 1 |
| 2016 | 2 | 0 |
| 2017 | 1 | 1 |
| 2018 | 0 | 1 |
| 2019 | 2 | 2 |
| 2020 | 0 | 1 |
| 2021 | 0 | 1 |
| 2022 | 2 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Pen and pen refill18 Oct 2022US 11,472,220 B2Kuretake Co., Ltd.
- Ink-based marking device having a multi-component nib structure22 Mar 2022US 11,279,165 B2Crayola LLC
- Nib for a calligraphic dip pen17 Sep 2019US 10,414,200 B1
- Left handed fountain pen2 Jul 2019US 10,336,128 B2
- Fountain pen nib14 Nov 2017US 9,815,316 B2Akita Grind Industry Co., Ltd.
- Pen and Pen Refill13 May 2021US 2021/0138824 A1Kuretake Co., Ltd.
- Ink-based marking device having a multi-component nib structure17 Dec 2020US 2020/0391538 A1Crayola LLC
- Ink-based marking device having a multi-component nib structure17 Oct 2019US 2019/0315151 A1Crayola LLC
- Omnibearing Writable Fountain Pen28 Feb 2019US 2019/0061411 A1
- Left Handed Fountain Pen19 Jul 2018US 2018/0201047 A1
Most cited
By later US patents
- Writing implement7US 5,775,828 AKabushiki Kaisha Pilot Corporation · 1998
- Penpoint assembly and writing instrument employing the same6US 4,968,169 AThe Pilot Ink Co., Ltd. · 1990
- Penpoint5US 5,957,610 A1999
- Conical nib, method of manufacture of the same, and ceramic composite conical nib5US 6,652,177 B22003
- Ink-based marking device having a multi-component nib structure4US 11,279,165 B2Crayola LLC · 2022