C04B 18/24
Vegetable refuse
Official title: Vegetable refuse, e.g. rice husks, maize-ear refuse; Cellulosic materials, e.g. paper {, cork}
C04B18/24 (Vegetable refuse) appears on 258 US grants and 285 published applications in this corpus.
Search patents in C04B- Granted patents
- 258
- Published applications
- 285
- Assignees
- 214
- Inventors
- 678
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 7 | 0 |
| 1984 | 3 | 0 |
| 1985 | 3 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 4 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 4 | 0 |
| 1995 | 0 | 0 |
| 1996 | 8 | 0 |
| 1997 | 4 | 0 |
| 1998 | 8 | 0 |
| 1999 | 7 | 0 |
| 2000 | 5 | 0 |
| 2001 | 4 | 3 |
| 2002 | 3 | 9 |
| 2003 | 1 | 15 |
| 2004 | 8 | 10 |
| 2005 | 9 | 9 |
| 2006 | 2 | 4 |
| 2007 | 7 | 5 |
| 2008 | 4 | 3 |
| 2009 | 3 | 2 |
| 2010 | 4 | 1 |
| 2011 | 4 | 6 |
| 2012 | 3 | 6 |
| 2013 | 3 | 5 |
| 2014 | 1 | 5 |
| 2015 | 7 | 4 |
| 2016 | 3 | 7 |
| 2017 | 2 | 13 |
| 2018 | 8 | 14 |
| 2019 | 12 | 21 |
| 2020 | 17 | 17 |
| 2021 | 8 | 23 |
| 2022 | 14 | 19 |
| 2023 | 16 | 24 |
| 2024 | 13 | 27 |
| 2025 | 17 | 14 |
| 2026 | 12 | 19 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Pozzolan-based additive agent and uses thereof22 Sep 2026US 12,741,906 B2
- Light weight ceramic aggregates made by agglomerating ceramic fibers22 Sep 2026US 12,741,908 B2Unifrax I LLC
- Crystalline cellulose reinforced cement8 Sep 2026US 12,729,158 B2
- Ultra stable cementitious material formulation, process for its making, and ultra stable tile backer board formulation and processes for its making1 Sep 2026US 12,726,151 B2Triton MgO Products, LLC
- Extraction of delignified, cellulose-based fibers from natural plant material, and materials incorporating such fibers12 May 2026US 12,624,500 B2University of Maryland, College Park
- Hardened body of hydraulic composition8 Oct 2026US 2026/0308056 A1Kuraray Co., Ltd.
- Solidified body, roadbed material, and method for manufacturing solidified body6 Aug 2026US 2026/0225956 A1Jfe Steel Corporation
- Composite building panel16 Jul 2026US 2026/0200799 A1Armstrong World Industries, Inc.
- Vegetal Concrete Masonry Unit and Method and System for Manufacture Thereof9 Jul 2026US 2026/0193135 A1Greenjams Buildtech Private Limited
- Densified engineered lignocellulosic composite and method of preparing thereof25 Jun 2026US 2026/0176199 A1
Most cited
By later US patents
- Cellulose fiber-reinforced structure99US 4,985,119 AThe Procter & Gamble Cellulose Company · 1991
- Composite materials made from plant fibers bonded with portland cement and method of producing same98US 4,406,703 APermawood International Corporation · 1983
- Fiber cement composite materials using sized cellulose fibers76US 6,676,745 B2James Hardie Research Pty Limited · 2004
- Construction materials containing surface modified fibers76US 6,955,844 B2Innovative Construction and Building Materials · 2005
- Fibre-reinforced cementitious product68US 4,373,957 ARockwool International A/S · 1983