B43K 7/01
Ball-point pens: for low viscosity liquid ink
Official title: for low viscosity liquid ink
B43K7/01 (Ball-point pens: for low viscosity liquid ink) appears on 43 US grants and 25 published applications in this corpus.
Search patents in B43K- Granted patents
- 43
- Published applications
- 25
- Assignees
- 25
- Inventors
- 90
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 4 | 1 |
| 2002 | 6 | 0 |
| 2003 | 2 | 2 |
| 2004 | 2 | 2 |
| 2005 | 2 | 1 |
| 2006 | 1 | 1 |
| 2007 | 1 | 1 |
| 2008 | 0 | 0 |
| 2009 | 1 | 0 |
| 2010 | 0 | 0 |
| 2011 | 1 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 3 |
| 2016 | 2 | 1 |
| 2017 | 1 | 0 |
| 2018 | 1 | 0 |
| 2019 | 0 | 1 |
| 2020 | 1 | 2 |
| 2021 | 0 | 1 |
| 2022 | 1 | 1 |
| 2023 | 0 | 2 |
| 2024 | 0 | 2 |
| 2025 | 2 | 1 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Oil-based ballpoint pen16 Jun 2026US 12,654,483 B2Kabushiki Kaisha Pilot Corporation
- Writing instrument26 Aug 2025US 12,397,579 B2Mitsubishi Pencil Company, Limited
- Opaque ink formulations and associated writing instruments28 Jan 2025US 12,209,192 B2Sanford, L. P.
- Molten gold writing apparatus17 May 2022US 11,331,942 B2
- Liquid ink writing instrument7 Apr 2020US 10,611,185 B2Qingdao Changlong Stationery Co., Ltd.
- Oil-based ink composition for ballpoint pen9 Jul 2026US 2026/0193481 A1Mitsubishi Pencil Company, Limited
- Ink composition and writing instrument12 Feb 2026US 2026/0042921 A1Future Creation & Development Center LLC.
- Writing instrument27 Feb 2025US 2025/0065665 A1Mitsubishi Pencil Company, Limited
- Aqueous ink composition for writing instruments27 Jun 2024US 2024/0209225 A1Mitsubishi Pencil Company, Limited
- Oil-based ballpoint pen6 Jun 2024US 2024/0182730 A1KABUSHIKI KAISHA PILOT CORPORATION (also trading as PILOT CORPORATION)
Most cited
By later US patents
- Aqueous gel ink-filled ball point pen48US 5,993,098 AMitsubishi Pencil Company, Limited · 1999
- Ball-point writing instrument containing an aqueous ink composition46US 4,671,691 AThe Gillette Company · 1987
- Ink compositions and writing instruments including the compositions34US 4,786,198 AThe Gillette Company · 1988
- Ball-point writing instrument containing an aqueous ink composition29US 5,013,361 AThe Gillette Company · 1991
- Writing element for use in ball point pen15US 4,139,313 A1979