B41M 5/0253
Using a chemical colour-forming ink
Official title: {using a chemical colour-forming ink, e.g. chemical hectography (B41M5/035 takes precedence)}
B41M5/0253 (Using a chemical colour-forming ink) appears on 18 US grants and 1 published applications in this corpus.
Search patents in B41M- Granted patents
- 18
- Published applications
- 1
- Assignees
- 6
- Inventors
- 21
- Latest grant
- 17 Aug 2021
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 3 | 0 |
| 1981 | 4 | 0 |
| 1982 | 2 | 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 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 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 | 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 | 1 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Thermal transfer foil for producing a true color image, process for producing a true color image, and true color image17 Aug 2021US 11,090,922 B2Leonhard Kurz Stiftung & Co. KG
- Process for manufacture of decorative intermediate films for use in laminated glass sheets22 May 2001US 6,235,140 B1Dai Nippon Insatsu Kabushiki Kaisha
- Color changing print1 Jun 1993US 5,215,956 A
- Process for manufacture of decorative intermediate films for use in laminated glass sheets11 Dec 1990US 4,976,805 ADai Nippon Insatsu Kabushiki Kaisha
- 2-[(3-Indolyl)carbonyl]-4/5-carboxybenzoic acids28 Sep 1982US 4,351,768 ASterling Drug Inc.
Most cited
By later US patents
- Color changing print32US 5,215,956 A1993
- Printed sheets containing concealed images and method and materials for preparation and visual development of same18US 4,051,283 AA. B. Dick Company · 1977
- Latent imaging master9US 4,097,637 AA. B. Dick Company · 1978
- Process for manufacture of decorative intermediate films for use in laminated glass sheets9US 4,976,805 ADai Nippon Insatsu Kabushiki Kaisha · 1990
- Duplicating systems4US 3,931,443 ALamson Industries Limited · 1976