B43K 8/165
Ink cartridges, ink reservoirs
Official title: {Ink cartridges, ink reservoirs}
B43K8/165 (Ink cartridges, ink reservoirs) appears on 10 US grants and 12 published applications in this corpus.
Search patents in B43K- Granted patents
- 10
- Published applications
- 12
- Assignees
- 10
- Inventors
- 41
- Latest grant
- 15 Apr 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 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 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 2 |
| 2020 | 0 | 0 |
| 2021 | 1 | 1 |
| 2022 | 0 | 1 |
| 2023 | 1 | 1 |
| 2024 | 1 | 3 |
| 2025 | 3 | 3 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Biodegradable marker pen4 Feb 2025US 12,214,617 B2Sunny Pro Co., Ltd.
- Fiber-bundled part for writing instruments, and pen tip and writing instrument using the fiber-bundled part7 Jan 2025US 12,187,068 B2Mitsubishi Pencil Company, Limited
- Heterogeneous fiber fluid reservoirs9 Jan 2024US 11,865,857 B2Porex Technologies Corp.
- Liquid storage member for coating tools10 Oct 2023US 11,780,258 B2Mitsubishi Pencil Company, Limited
- Plug structure, liquid cartridge, and pen30 Apr 2026US 2026/0116118 A1Lion Pencil Co., Ltd.
- Attachment structure in writing instrument, writing instrument, and soft member30 Oct 2025US 2025/0332858 A1KABUSHIKI KAISHA PILOT CORPORATION (also trading as PILOT CORPORATION)
- Sharp type paint marker pen2 Oct 2025US 2025/0303778 A1Mungyo Ons Corporation
- Writing implement refill and method of engraving writing implement refill10 Apr 2025US 2025/0115072 A1Mitsubishi Pencil Company, Limited
- Biodegradable marker pen11 Jul 2024US 2024/0227428 A1Sunny Pro Co., Ltd.
Most cited
By later US patents
- Reservoir cartridge for writing pens14US 4,217,058 AKoh-I-Noor Rapidograph, Inc. · 1980
- Tubular writting pen with superposed pressure equalization chambers7US 4,930,921 AKoh-I-Noor Rapidograph, Inc. · 1990
- Writing instrument with displaceable safety separator3US 4,990,012 AJ.S. Staedtler GmbH & Co. KG · 1991
- Refillable writing instrument1US 10,889,143 B22021
- Liquid storage member for coating tools1US 11,780,258 B2Mitsubishi Pencil Company, Limited · 2023