D21H 21/46
Elements suited for chemical verification or impeding chemical tampering
Official title: Elements suited for chemical verification or impeding chemical tampering, e.g. by use of eradicators
D21H21/46 (Elements suited for chemical verification or impeding chemical tampering) appears on 38 US grants and 17 published applications in this corpus.
Search patents in D21H- Granted patents
- 38
- Published applications
- 17
- Assignees
- 33
- Inventors
- 56
- Latest grant
- 3 Dec 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 1 |
| 2004 | 1 | 2 |
| 2005 | 0 | 0 |
| 2006 | 1 | 1 |
| 2007 | 1 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 1 |
| 2012 | 0 | 2 |
| 2013 | 0 | 0 |
| 2014 | 1 | 1 |
| 2015 | 1 | 2 |
| 2016 | 0 | 1 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 1 | 0 |
| 2022 | 1 | 2 |
| 2023 | 0 | 0 |
| 2024 | 2 | 0 |
| 2025 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Water resistant paper and solution for producing same and building structure employing same3 Dec 2024US 12,157,977 B2Agriboard Green Building Systems, LLC
- Multi-luminescent security element and value or security product containing said security element23 Jan 2024US 11,879,083 B2Bundesdruckerei GmbH
- Multi-luminescent security element and value or security product containing said security element4 Jan 2022US 11,214,734 B2Bundesdruckerei GmbH
- Water resistant paper and solution for producing same and building structure employing same18 May 2021US 11,008,708 B2Agriboard International, LLC
- Paper that cannot be forged using solvents16 Jun 2015US 9,057,159 B2Honnorat Recherches & Services
- Water Resistant Paper and Solution for Producing Same and Building Structure Employing Same15 May 2025US 2025/0154726 A1Agriboard International, LLC
- Multi-Luminescent Security Element and Value or Security Product Containing Said Security Element23 Jun 2022US 2022/0195293 A1Bundesdruckerei GmbH
- Water Resistant Paper and Solution for Producing Same and Building Structure Employing Same13 Jan 2022US 2022/0010494 A1Agriboard International, LLC
- Water Resistant Paper and Solution for Producing Same and Building Structure Employing Same20 Aug 2020US 2020/0263360 A1Agriboard International, LLC
- Multi-Luminescent Security Element and Value or Security Product Containing Said Security Element25 Feb 2016US 2016/0053169 A1Bundesdruckerei GmbH
Most cited
By later US patents
- Security paper158US 6,159,585 AGeorgia-Pacific Corporation · 2000
- Toner adhesion-enhancing coating for security documents92US 5,045,426 AThe Standard Register Company · 1991
- Method and apparatus for high security crypto-marking for protecting valuable objects89US 5,139,812 ABioprobe Systems · 1992
- Methods for tagging and tracing materials with nucleic acids79US 5,451,505 AHoffmann-La Roche Inc. · 1995
- Security marking method, materials provided with security marks48US 4,736,425 APetrel · 1988