B43K 1/006
Porous nibs
Official title: {Porous nibs (B43K1/12 takes precedence)}
B43K1/006 (Porous nibs) appears on 40 US grants and 41 published applications in this corpus.
Search patents in B43K- Granted patents
- 40
- Published applications
- 41
- Assignees
- 24
- Inventors
- 85
- Latest grant
- 18 Feb 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 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 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 2 |
| 2006 | 2 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 1 | 1 |
| 2013 | 0 | 2 |
| 2014 | 1 | 3 |
| 2015 | 3 | 1 |
| 2016 | 0 | 0 |
| 2017 | 0 | 5 |
| 2018 | 1 | 2 |
| 2019 | 6 | 6 |
| 2020 | 1 | 4 |
| 2021 | 5 | 6 |
| 2022 | 4 | 4 |
| 2023 | 3 | 0 |
| 2024 | 4 | 1 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Writing implement18 Feb 2025US 12,227,024 B2Mitsubishi Pencil Company, Limited
- Non-smear nib and associated writing instruments31 Dec 2024US 12,179,508 B2Sanford, L. P.
- Writing instruments and associated methods20 Aug 2024US 12,064,989 B2Sanford, L. P.
- Color linker16 Jul 2024US 12,036,814 B2Societe BIC
- Writing instrument comprising a switchable flow material30 Jan 2024US 11,884,092 B2BIC Violex Single Member S.A.
- Writing implement15 Feb 2024US 2024/0051329 A1Mitsubishi Pencil Company, Limited
- Color linker22 Sep 2022US 2022/0297468 A1Societe BIC
- Pen14 Jul 2022US 2022/0219481 A1Kuretake Co., Ltd.
- Writing instrument comprising a switchable flow material16 Jun 2022US 2022/0184994 A1Bic-Violex SA
- Non-Smear Nib and Associated Writing Instruments10 Feb 2022US 2022/0041006 A1Sanford, L. P.
Most cited
By later US patents
- Single- or double-ended multi-section nib marker25US 7,018,122 B2Sanford, L. P. · 2006
- Unitary porous themoplastic writing nib18US 3,942,903 AGlasrock Products, Inc. · 1976
- Multicomponent sintered porous liquid applicator nibs16US 10,195,635 B2Porex Corporation · 2019
- Nib body to form plural lines15US 4,723,859 A1988
- Nib for a writing instrument14US 5,096,322 APentel Kabushiki Kaisha · 1992