C09D 11/18
Specially adapted for ball-point writing instruments
Official title: specially adapted for ball-point writing instruments
C09D11/18 (Specially adapted for ball-point writing instruments) appears on 308 US grants and 266 published applications in this corpus.
Search patents in C09D- Granted patents
- 308
- Published applications
- 266
- Assignees
- 84
- Inventors
- 501
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 4 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 0 | 0 |
| 1982 | 4 | 0 |
| 1983 | 8 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 6 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 3 | 0 |
| 1996 | 5 | 0 |
| 1997 | 3 | 0 |
| 1998 | 7 | 0 |
| 1999 | 9 | 0 |
| 2000 | 9 | 0 |
| 2001 | 8 | 5 |
| 2002 | 19 | 14 |
| 2003 | 13 | 19 |
| 2004 | 20 | 14 |
| 2005 | 7 | 29 |
| 2006 | 10 | 17 |
| 2007 | 16 | 11 |
| 2008 | 15 | 9 |
| 2009 | 10 | 8 |
| 2010 | 11 | 11 |
| 2011 | 9 | 7 |
| 2012 | 5 | 5 |
| 2013 | 11 | 5 |
| 2014 | 7 | 3 |
| 2015 | 0 | 8 |
| 2016 | 6 | 7 |
| 2017 | 10 | 8 |
| 2018 | 2 | 1 |
| 2019 | 0 | 6 |
| 2020 | 6 | 7 |
| 2021 | 3 | 11 |
| 2022 | 0 | 19 |
| 2023 | 9 | 15 |
| 2024 | 13 | 11 |
| 2025 | 12 | 7 |
| 2026 | 6 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Writing gel ink28 Jul 2026US 12,692,409 B2Societe BIC
- Oil-based ballpoint pen16 Jun 2026US 12,654,483 B2Kabushiki Kaisha Pilot Corporation
- Aqueous ink composition for writing instruments21 Apr 2026US 12,606,715 B2Mitsubishi Pencil Company, Limited
- Oil-based ink composition for ballpoint pens and ballpoint pen employing the same14 Apr 2026US 12,600,875 B2Kabushiki Kaisha Pilot Corporation
- Ink composition for water-based ballpoint pens17 Mar 2026US 12,577,418 B2Mitsubishi Pencil Company, Limited
- Oil-in-water ink composition for writing utensils3 Sep 2026US 2026/0258263 A1Mitsubishi Pencil Company, Limited
- Oil-in-water ink composition for writing utensils9 Jul 2026US 2026/0193480 A1Mitsubishi Pencil Company, Limited
- Oil-based ink composition for ballpoint pen9 Jul 2026US 2026/0193481 A1Mitsubishi Pencil Company, Limited
- Writing instrument refill25 Jun 2026US 2026/0175613 A1KABUSHIKI KAISHA PILOT CORPORATION (also trading as PILOT CORPORATION)
- Use of plasmonic ink composition on synthetic paper26 Mar 2026US 2026/0085176 A1Centre National De La Recherche Scientifique
Most cited
By later US patents
- Process for preparing carbon materials with diazonium salts and resultant carbon products257US 5,554,739 ACabot Corporation · 1996
- Reaction of carbon black with diazonium salts, resultant carbon black products and their uses157US 5,851,280 ACabot Corporation · 1998
- Aqueous inks and coatings containing modified carbon products156US 5,672,198 ACabot Corporation · 1997
- Reaction of carbon black with diazonium salts, resultant carbon black products and their uses123US 6,042,643 ACabot Corporation · 2000
- Reaction of carbon black with diazonium salts, resultant carbon black products and their uses84US 5,900,029 ACabot Corporation · 1999