B41M 5/145
With a lactone or lactam ring
Official title: with a lactone or lactam ring
B41M5/145 (With a lactone or lactam ring) appears on 273 US grants and 17 published applications in this corpus.
Search patents in B41M- Granted patents
- 273
- Published applications
- 17
- Assignees
- 49
- Inventors
- 253
- Latest grant
- 28 Jun 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 23 | 0 |
| 1977 | 18 | 0 |
| 1978 | 8 | 0 |
| 1979 | 3 | 0 |
| 1980 | 11 | 0 |
| 1981 | 19 | 0 |
| 1982 | 9 | 0 |
| 1983 | 6 | 0 |
| 1984 | 11 | 0 |
| 1985 | 10 | 0 |
| 1986 | 9 | 0 |
| 1987 | 21 | 0 |
| 1988 | 12 | 0 |
| 1989 | 18 | 0 |
| 1990 | 6 | 0 |
| 1991 | 18 | 0 |
| 1992 | 12 | 0 |
| 1993 | 14 | 0 |
| 1994 | 13 | 0 |
| 1995 | 4 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 0 |
| 2003 | 2 | 0 |
| 2004 | 0 | 5 |
| 2005 | 1 | 0 |
| 2006 | 2 | 1 |
| 2007 | 5 | 2 |
| 2008 | 0 | 3 |
| 2009 | 1 | 0 |
| 2010 | 0 | 2 |
| 2011 | 0 | 0 |
| 2012 | 2 | 2 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 0 |
| 2017 | 1 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Recording material and recording sheet28 Jun 2022US 11,370,240 B2Nippon Soda Co., Ltd.
- Colour-forming materials, contact recording devices and pressure recording devices28 Mar 2017US 9,604,485 B2Active Device Development Limited
- Scratch color-developable ink and invisible information printed sheet9 Oct 2012US 8,283,285 B2Mitsubishi Paper Mills Limited
- Coating compositions for marking substrates24 Jan 2012US 8,101,544 B2Datalase Ltd.
- Imaging system17 Mar 2009US 7,504,360 B2Zink Imaging, Inc.
- Recording material and recording sheet19 Dec 2019US 2019/0381820 A1Nippon Soda Co., Ltd.
- Colour-Forming Materials, Contact Recording Devices and Pressure Recording Devices8 Oct 2015US 2015/0283839 A1Active Device Development Limited
- Note pad containing carbonless color-developing material26 Apr 2012US 2012/0100988 A1Taiwan Hopax Chemicals Mfg. Co., Ltd.
- Note pad containing carbonless color-developing material19 Jan 2012US 2012/0015174 A1Taiwan Hopax Chemicals Mfg. Co., Ltd.
- Scratch color-developable ink and invisible information printed sheet28 Jan 2010US 2010/0021702 A1Mitsubishi Paper Ink Mfg. Co., Ltd.
Most cited
By later US patents
- Image recording members70US 4,390,616 AFuji Photo Film Co., Ltd. · 1983
- Recording material and process of using61US 5,196,297 APolaroid Corporation · 1993
- Recording material59US 4,985,345 ARicoh Company, Ltd. · 1991
- Chromogenic fluoran derivatives and the preparation and use thereof44US 3,959,571 AShin Nisso Kako Co., Ltd. · 1976
- Scratch card, and method and apparatus for validation of the same34US 6,047,964 ASpectra Science Corporation · 2000