A63F 3/0685
Having a message becoming legible after a chemical reaction or physical action
Official title: {having a message becoming legible after a chemical reaction or physical action has taken place, e.g. applying pressure, heat treatment, spraying with a substance, breaking microcapsules (use of microcapsules for duplicating paper B41M5/165)}
A63F3/0685 (Having a message becoming legible after a chemical reaction or physical action) appears on 62 US grants and 30 published applications in this corpus.
Search patents in A63F- Granted patents
- 62
- Published applications
- 30
- Assignees
- 37
- Inventors
- 101
- Latest grant
- 30 Nov 2021
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 3 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 4 | 0 |
| 1994 | 6 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 0 | 0 |
| 1999 | 5 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 1 |
| 2002 | 3 | 6 |
| 2003 | 2 | 4 |
| 2004 | 1 | 3 |
| 2005 | 2 | 2 |
| 2006 | 1 | 2 |
| 2007 | 0 | 1 |
| 2008 | 1 | 4 |
| 2009 | 1 | 0 |
| 2010 | 3 | 1 |
| 2011 | 2 | 1 |
| 2012 | 2 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 2 |
| 2017 | 0 | 1 |
| 2018 | 1 | 1 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
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- TicTacToe-Like Instant Game Ticket18 Mar 2021US 2021/0077898 A1
- Lottery Game System, Product and Method with Encrypted Planar Displays21 Jun 2018US 2018/0169514 A1IGT Global Solutions Corporation
- Thermally imageable substrate with encapsulated coreactant30 Nov 2017US 2017/0340955 A1Appvion, Inc.
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Most cited
By later US patents
- Probability game with insured winning572US 5,855,514 A1999
- Probability game348US 5,931,467 AStuart J. Kamille · 1999
- Method and apparatus for redeeming a game piece281US 5,996,997 A1999
- Tamper-resistant article and method of authenticating the same104US 5,193,854 ABABN Technologies Inc. · 1993
- Card for recording the number of game play media, a card dispensing device, and a card receiving device103US 5,627,356 AKabushiki Kaisha Ace Denken · 1997