D21H 5/0002
Flame-resistant papers
Official title: {Flame-resistant papers; (complex) compositions rendering paper fire-resistant}
D21H5/0002 (Flame-resistant papers) appears on 43 US grants and 16 published applications in this corpus.
Search patents in D21H- Granted patents
- 43
- Published applications
- 16
- Assignees
- 34
- Inventors
- 102
- Latest grant
- 17 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 4 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 4 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 3 | 0 |
| 1985 | 3 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 4 |
| 2014 | 0 | 0 |
| 2015 | 1 | 0 |
| 2016 | 1 | 3 |
| 2017 | 1 | 1 |
| 2018 | 0 | 0 |
| 2019 | 2 | 1 |
| 2020 | 1 | 2 |
| 2021 | 0 | 1 |
| 2022 | 1 | 0 |
| 2023 | 1 | 1 |
| 2024 | 0 | 1 |
| 2025 | 1 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method of making fire retardant materials and related products17 Mar 2026US 12,577,732 B2Cleanfiber Inc.
- Fire retardant paper12 Aug 2025US 12,385,188 B2Thermal Ceramics, Inc.
- Papers comprising aerogel powder and aramid polymer fibrils14 Feb 2023US 11,578,461 B2Dupont Safety & Construction, Inc.
- Flame retardant paper19 Jul 2022US 11,390,998 B2Toray Industries, Inc.
- Water based liquid fire retardant for use in cellulose insulation8 Sep 2020US 10,767,306 B2
- Method of making fire retardant materials and related products13 Jun 2024US 2024/0191430 A1ClLEANFIBER INC..
- Fire retardant paper1 Jun 2023US 2023/0167610 A1Thermal Ceramics, Inc.
- Papers comprising aerogel powder and aramid polymer fibrils25 Nov 2021US 2021/0363699 A1Dupont Safety & Construction, Inc.
- Flame retardant paper24 Dec 2020US 2020/0399833 A1Toray Industries, Inc.
- Cylindrical Smoking Device1 Oct 2020US 2020/0305498 A1
Most cited
By later US patents
- Message format for secure communication over data links51US 4,322,576 ARacal-Milgo, Inc. · 1982
- Fire-resistant material49US 4,720,414 A1988
- Fire-resistant filler sheet laminates39US 4,371,579 AWestinghouse Electric Corp. · 1983
- Apparatus for making cellulose insulation23US 4,191,224 ADiamond Insulation Industries, Inc. · 1980
- Fire retardant insulation22US 4,184,311 A1980