B41K 1/52
Ink reservoirs
Official title: Ink reservoirs, e.g. integral with stamp handles
B41K1/52 (Ink reservoirs) appears on 37 US grants and 30 published applications in this corpus.
Search patents in B41K- Granted patents
- 37
- Published applications
- 30
- Assignees
- 23
- Inventors
- 63
- Latest grant
- 3 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 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 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 4 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 0 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 1 | 2 |
| 2007 | 0 | 0 |
| 2008 | 0 | 2 |
| 2009 | 1 | 1 |
| 2010 | 0 | 3 |
| 2011 | 1 | 0 |
| 2012 | 1 | 2 |
| 2013 | 2 | 2 |
| 2014 | 0 | 3 |
| 2015 | 3 | 1 |
| 2016 | 3 | 2 |
| 2017 | 3 | 1 |
| 2018 | 0 | 3 |
| 2019 | 2 | 0 |
| 2020 | 0 | 0 |
| 2021 | 2 | 1 |
| 2022 | 0 | 0 |
| 2023 | 1 | 1 |
| 2024 | 0 | 0 |
| 2025 | 0 | 3 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Intelligent seal mold device having multifunctional areas and method for generating image of seal mold having multifunctional areas3 Mar 2026US 12,567,978 B2
- Golf ball stamp8 Aug 2023US 11,717,729 B2
- Stamp and associated stamp pad5 Oct 2021US 11,135,864 B2Trodat GmbH
- Ink composition for reversibly thermochromic stamp and stamp25 May 2021US 11,015,076 B2Kabushiki Kaisha Pilot Corporation
- Tally stamp devices, systems, and methods28 May 2019US 10,300,725 B2
- Self-inking stamp with reinforced crossbar20 Aug 2026US 2026/0241731 A1Colop Stempelerzeugung Skopek Gesellschaft M.B.H. & Co. KG.
- Multifunctional opening tool11 Jun 2026US 2026/0158685 A1
- Self-inking stamping device and method for opening a cover31 Jul 2025US 2025/0242621 A1Colop Stempelerzeugung Skopek Gesellschaft M.B.H. & Co. KG.
- Apparatus for printng indicia13 Mar 2025US 2025/0083463 A1LegiLiner, LLC
- Intelligent seal mold device having multifunctional areas and method for generating image of seal mold having multifunctional areas13 Feb 2025US 2025/0055701 A1
Most cited
By later US patents