D21H 13/46
Non-siliceous fibres
Official title: Non-siliceous fibres, e.g. from metal oxides
D21H13/46 (Non-siliceous fibres) appears on 190 US grants and 204 published applications in this corpus.
Search patents in D21H- Granted patents
- 190
- Published applications
- 204
- Assignees
- 170
- Inventors
- 617
- Latest grant
- 7 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 3 | 0 |
| 1986 | 2 | 0 |
| 1987 | 4 | 0 |
| 1988 | 6 | 0 |
| 1989 | 3 | 0 |
| 1990 | 3 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 4 | 0 |
| 1996 | 4 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 4 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 1 |
| 2002 | 5 | 8 |
| 2003 | 5 | 5 |
| 2004 | 7 | 3 |
| 2005 | 1 | 4 |
| 2006 | 1 | 6 |
| 2007 | 4 | 8 |
| 2008 | 3 | 4 |
| 2009 | 2 | 6 |
| 2010 | 5 | 10 |
| 2011 | 6 | 17 |
| 2012 | 5 | 10 |
| 2013 | 10 | 8 |
| 2014 | 6 | 9 |
| 2015 | 6 | 9 |
| 2016 | 3 | 6 |
| 2017 | 8 | 9 |
| 2018 | 5 | 7 |
| 2019 | 3 | 11 |
| 2020 | 8 | 11 |
| 2021 | 10 | 11 |
| 2022 | 2 | 8 |
| 2023 | 4 | 11 |
| 2024 | 7 | 8 |
| 2025 | 13 | 6 |
| 2026 | 6 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- 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.
- Space filling material, method for manufacturing same, and space filling structure10 Mar 2026US 12,571,163 B2Kuraray Co., Ltd.
- Ceramic paper and method for preparing same10 Feb 2026US 12,546,061 B2Envioneer 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.
- Structure for producing casting, method for producing same, and method for producing casting using same16 Jul 2026US 2026/0199964 A1Kao Corporation
- Filtration apparatus containing graphene oxide membrane25 Jun 2026US 2026/0175179 A1Via Separations, Inc.
Most cited
By later US patents
- Conductive laminate flooring134US 4,724,187 ANevamar Corporation · 1988
- Gypsum microfiber sheet material82US 5,401,588 AGeorgia-Pacific Resins, Inc. · 1995
- Non-woven activated carbon fabric80US 4,565,727 AAmerican Cyanamid Company · 1986
- Three dimensional macroscopic assemblages of randomly oriented carbon fibrils and composites containing same76US 5,691,054 AHyperion Catalysis Int'l., Inc. · 1997
- Method of making multilayer sheets for firestops or mounting mats57US 6,458,418 B23M Innovative Properties Company · 2002