C04B 14/38
Fibrous materials
Official title: Fibrous materials; Whiskers
C04B14/38 (Fibrous materials) appears on 514 US grants and 538 published applications in this corpus.
Search patents in C04B- Granted patents
- 514
- Published applications
- 538
- Assignees
- 386
- Inventors
- 1,363
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 3 | 0 |
| 1978 | 6 | 0 |
| 1979 | 5 | 0 |
| 1980 | 7 | 0 |
| 1981 | 12 | 0 |
| 1982 | 10 | 0 |
| 1983 | 5 | 0 |
| 1984 | 2 | 0 |
| 1985 | 7 | 0 |
| 1986 | 4 | 0 |
| 1987 | 4 | 0 |
| 1988 | 3 | 0 |
| 1989 | 7 | 0 |
| 1990 | 6 | 0 |
| 1991 | 6 | 0 |
| 1992 | 7 | 0 |
| 1993 | 4 | 0 |
| 1994 | 5 | 0 |
| 1995 | 5 | 0 |
| 1996 | 10 | 0 |
| 1997 | 8 | 0 |
| 1998 | 8 | 0 |
| 1999 | 7 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 3 |
| 2002 | 9 | 3 |
| 2003 | 5 | 4 |
| 2004 | 3 | 5 |
| 2005 | 5 | 7 |
| 2006 | 0 | 7 |
| 2007 | 2 | 4 |
| 2008 | 5 | 9 |
| 2009 | 5 | 6 |
| 2010 | 4 | 6 |
| 2011 | 3 | 10 |
| 2012 | 5 | 13 |
| 2013 | 2 | 7 |
| 2014 | 10 | 15 |
| 2015 | 9 | 14 |
| 2016 | 10 | 17 |
| 2017 | 12 | 32 |
| 2018 | 22 | 38 |
| 2019 | 44 | 65 |
| 2020 | 39 | 38 |
| 2021 | 18 | 39 |
| 2022 | 34 | 41 |
| 2023 | 27 | 39 |
| 2024 | 34 | 50 |
| 2025 | 31 | 29 |
| 2026 | 25 | 37 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method for preparing high-performance compressed desert sand concrete29 Sep 2026US 12,747,188 B2Jinan University
- Marbled cast stone22 Sep 2026US 12,741,907 B1
- Light weight ceramic aggregates made by agglomerating ceramic fibers22 Sep 2026US 12,741,908 B2Unifrax I LLC
- Double-liquid grouting slurry, its technology and application for super large diameter underwater shield engineering under high water pressure condition22 Sep 2026US 12,741,910 B2China Railway 14th Bureau Group Corporation Limited
- Basalt fiber reinforced asphalt concrete15 Sep 2026US 12,735,357 B2National Central University
- Hydraulic composition for ultra-high performance concrete and ultra-high performance grout8 Oct 2026US 2026/0308054 A1Sika Technology AG
- Fiber material for cement/concrete reinforcement, method for producing fiber material for cement/concrete reinforcement, and fiber-reinforced cement composition8 Oct 2026US 2026/0308058 A1Toyota Jidosha Kabushiki Kaisha
- Process for obtaining fibre-reinforced composite materials8 Oct 2026US 2026/0308065 A1Aeronautical Service S.R.L.
- Composite panel element1 Oct 2026US 2026/0296977 A1
- Microporous powder composition, use thereof and insulation product24 Sep 2026US 2026/0285751 A1Prtc NV
Most cited
By later US patents
- Carbon fibrils, method for producing same and compositions containing same361US 4,663,230 AHyperion Catalysis International, Inc. · 1987
- Carbon fibrils and method for producing same250US 5,165,909 AHyperion Catalysis Int'l., Inc. · 1992
- Asbestiform crystalline calcium sodium or lithium phosphate, preparation and compositions161US 4,346,028 AMonsanto Company · 1982
- Carbon fibrils144US 5,707,916 AHyperion Catalysis International, Inc. · 1998
- Rigid porous carbon structures, methods of making, methods of using and products containing same143US 6,099,965 AHyperion Catalysis International, Inc. · 2000