D21C 1/10
Physical methods for facilitating impregnation
D21C1/10 (Physical methods for facilitating impregnation) appears on 68 US grants and 68 published applications in this corpus.
Search patents in D21C- Granted patents
- 68
- Published applications
- 68
- Assignees
- 68
- Inventors
- 186
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 5 | 0 |
| 2002 | 3 | 4 |
| 2003 | 1 | 1 |
| 2004 | 2 | 3 |
| 2005 | 2 | 2 |
| 2006 | 0 | 1 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 1 | 3 |
| 2010 | 0 | 2 |
| 2011 | 1 | 2 |
| 2012 | 0 | 1 |
| 2013 | 1 | 2 |
| 2014 | 2 | 2 |
| 2015 | 2 | 3 |
| 2016 | 2 | 8 |
| 2017 | 0 | 1 |
| 2018 | 7 | 4 |
| 2019 | 3 | 5 |
| 2020 | 3 | 4 |
| 2021 | 3 | 2 |
| 2022 | 3 | 2 |
| 2023 | 1 | 6 |
| 2024 | 3 | 3 |
| 2025 | 2 | 4 |
| 2026 | 3 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method and system for treating biomass8 Sep 2026US 12,729,483 B2Valmet Corporation
- Paper pulp, a method for producing paper pulp, and paper pulp products31 Mar 2026US 12,590,411 B2ShenZhen YUTO Packaging Technology Co., Ltd.
- Pulping methods, methods for manufacturing paperboard, and paperboard structures6 Jan 2026US 12,516,472 B2WestRock MWV, LLC
- Method for manufacturing bleached pulp from a feedstock comprising recycled paper17 Jun 2025US 12,331,462 B2WestRock MWV, LLC
- High brightness non-wood pulp18 Feb 2025US 12,227,900 B2Kimberly-Clark Worldwide, Inc.
- High-bulk ctmp23 Jul 2026US 2026/0210046 A1Billerud Aktiebolag (publ)
- Production method of ctmp having a low extractives content23 Jul 2026US 2026/0210047 A1Billerud Aktiebolag (publ)
- Manufacture of dissolving pulp grade cellulose25 Jun 2026US 2026/0176817 A1Sixring Inc.
- Original ecological bamboo fibers, preparation method and application thereof18 Sep 2025US 2025/0290229 A1Jiyang College of Zhejiang A&F University
- High brightness non-wood pulp8 May 2025US 2025/0146219 A1Kimberly-Clark Worldwide, Inc.
Most cited
By later US patents
- Process for oxygen pulping of lignocellulosic material and recorvery of pulping chemicals96US 6,770,168 B1Kiram AB · 2004
- Paper products and methods and systems for manufacturing such products66US 7,867,358 B2Xyleco, Inc. · 2011
- Process for pretreating wood chips for pulping42US 6,214,164 B1Sunds Defibrator Woodhandling Oy · 2001
- High yield, low cost cellulosic pulp and hydrated gels therefrom40US 4,087,317 AEucatex S.A. Industria e Comercio · 1978
- Method and system for feeding comminuted fibrous material35US 5,753,075 A1998