D21H 13/36
Inorganic fibres or flakes
D21H13/36 (Inorganic fibres or flakes) appears on 627 US grants and 493 published applications in this corpus.
Search patents in D21H- Granted patents
- 627
- Published applications
- 493
- Assignees
- 380
- Inventors
- 1,404
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 11 | 0 |
| 1977 | 6 | 0 |
| 1978 | 3 | 0 |
| 1979 | 7 | 0 |
| 1980 | 9 | 0 |
| 1981 | 20 | 0 |
| 1982 | 11 | 0 |
| 1983 | 19 | 0 |
| 1984 | 20 | 0 |
| 1985 | 18 | 0 |
| 1986 | 10 | 0 |
| 1987 | 14 | 0 |
| 1988 | 16 | 0 |
| 1989 | 14 | 0 |
| 1990 | 11 | 0 |
| 1991 | 12 | 0 |
| 1992 | 13 | 0 |
| 1993 | 6 | 0 |
| 1994 | 8 | 0 |
| 1995 | 14 | 0 |
| 1996 | 8 | 0 |
| 1997 | 6 | 0 |
| 1998 | 7 | 0 |
| 1999 | 13 | 0 |
| 2000 | 9 | 0 |
| 2001 | 15 | 4 |
| 2002 | 13 | 13 |
| 2003 | 13 | 30 |
| 2004 | 19 | 12 |
| 2005 | 8 | 27 |
| 2006 | 6 | 21 |
| 2007 | 12 | 28 |
| 2008 | 8 | 21 |
| 2009 | 8 | 14 |
| 2010 | 18 | 29 |
| 2011 | 21 | 28 |
| 2012 | 21 | 26 |
| 2013 | 19 | 18 |
| 2014 | 14 | 22 |
| 2015 | 14 | 19 |
| 2016 | 7 | 22 |
| 2017 | 15 | 16 |
| 2018 | 13 | 14 |
| 2019 | 12 | 18 |
| 2020 | 13 | 19 |
| 2021 | 16 | 15 |
| 2022 | 8 | 15 |
| 2023 | 7 | 19 |
| 2024 | 13 | 16 |
| 2025 | 18 | 15 |
| 2026 | 11 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Moving fluid in a rotating cylinder11 Aug 2026US 12,703,945 B2
- Filter material for air filter and method for producing filter material14 Jul 2026US 12,678,724 B2Hokuetsu Corporation
- Electrically conductive smart papers7 Jul 2026US 12,674,279 B2University of Washington
- Fiber diameter measuring device, inorganic fiber sheet producing device, method for measuring fiber diameter, and method for producing inorganic fiber sheet30 Jun 2026US 12,668,925 B2Maftec Co., Ltd.
- Thermoplastic sheets and articles with variable lofting capacity26 May 2026US 12,636,852 B2Hanwha Azdel, Inc.
- Ceiling basemat water reduction through strategic use of pressing and vacuuming17 Sep 2026US 2026/0275636 A1USG Interiors, Inc.
- Papermaking mat and method for producing paper making mat3 Sep 2026US 2026/0258606 A1Ibiden Co., Ltd.
- Papermaking mat and method for producing paper making mat27 Aug 2026US 2026/0250908 A1Ibiden Co., Ltd.
- Carbon fiber sheet, gas diffusion electrode medium, fuel cell, and method for manufacturing carbon fiber sheet27 Aug 2026US 2026/0253914 A1Toray Industries, Inc.
- Carbon material precursor and method for producing carbon material using same30 Jul 2026US 2026/0218454 A1Nippon Paper Industries Co., Ltd.
Most cited
By later US patents
- Asbestiform crystalline calcium sodium or lithium phosphate, preparation and compositions161US 4,346,028 AMonsanto Company · 1982
- Filtration structures of wet laid, bicomponent fiber148US 5,580,459 AHoechst Celanese Corporation · 1996
- Conductive laminate flooring134US 4,724,187 ANevamar Corporation · 1988
- Formable pulp compositions123US 4,562,218 AArmstrong World Industries, Inc. · 1985
- Wet laid bonded fibrous web containing bicomponent fibers including LLDPE116US 5,167,765 AHoechst Celanese Corporation · 1992