B27K 3/346
Grafting onto wood fibres
Official title: {Grafting onto wood fibres (B27K3/156 takes precedence; macromolecular compounds derived from lignocellulosic materials C08H)}
B27K3/346 (Grafting onto wood fibres) appears on 51 US grants and 87 published applications in this corpus.
Search patents in B27K- Granted patents
- 51
- Published applications
- 87
- Assignees
- 53
- Inventors
- 171
- Latest grant
- 5 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 1 |
| 2004 | 1 | 1 |
| 2005 | 0 | 2 |
| 2006 | 0 | 0 |
| 2007 | 1 | 1 |
| 2008 | 1 | 0 |
| 2009 | 0 | 2 |
| 2010 | 1 | 3 |
| 2011 | 1 | 5 |
| 2012 | 1 | 9 |
| 2013 | 2 | 11 |
| 2014 | 4 | 3 |
| 2015 | 3 | 3 |
| 2016 | 3 | 4 |
| 2017 | 0 | 12 |
| 2018 | 4 | 6 |
| 2019 | 5 | 2 |
| 2020 | 4 | 4 |
| 2021 | 1 | 1 |
| 2022 | 2 | 5 |
| 2023 | 5 | 7 |
| 2024 | 2 | 2 |
| 2025 | 2 | 0 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Wood protecting methods and wood products produced with the methods5 May 2026US 12,617,120 B2OrganoWood AB
- Method for the modification of wood materials to improve mechanical properties, water resistance and flame retardancy by utilizing a combination of mineralization with infusion and polymerization of biopolymers18 Nov 2025US 12,472,658 B1Hema High-Tech Eco Materials Joint Stock Company
- Boards from acetylated rubberwood5 Aug 2025US 12,377,574 B2Tricoya Technologies Ltd
- Flame-retardant treatment of lignocellulosic materials, resulting flame-retarded lignocellulosic materials and uses thereof23 Apr 2024US 11,964,407 B2Institut Mines-Telecom
- Delignified wood materials, and methods for fabricating and use thereof16 Apr 2024US 11,958,209 B2University of Maryland, College Park
- Process for the acetylation of wood and acetylated wood17 Sep 2026US 2026/0273793 A1Titan Wood Limited
- Acetylated wood30 Jul 2026US 2026/0216912 A1YKK AP Inc.
- Method for producing modified wood material, and modified wood material14 May 2026US 2026/0131497 A1Keihoku Precut Co., Ltd.
- Flexible and smart wood with responsive function, preparation method thereof and actuator21 Nov 2024US 2024/0383170 A1Nanjing Forestry University
- Delignified wood materials, and methods for fabricating and use thereof15 Aug 2024US 2024/0269882 A1University of Maryland, College Park
Most cited
By later US patents
- Acetylation method for material containing cellulose, and manufacturing method for modified wood24US 5,525,721 AYamaha Corporation · 1996
- Acetylation of lignocellulosic materials22US 4,804,384 AThe United States of America as represented by the Secretary of Agriculture · 1989
- Methods for esterifying hydroxyl groups in wood21US 7,300,705 B2Weyerhaeuser Company · 2007
- Treatment of natural polymer based materials and the products based thereon19US 6,830,784 B2Commonwealth Scientific and Industrial Research Organisation · 2004
- Modifying method for wood elements13US 6,632,326 B1Yamaha Corporation · 2003