C08H 6/00
Macromolecular compounds derived from lignin
Official title: {Macromolecular compounds derived from lignin, e.g. tannins, humic acids}
C08H6/00 (Macromolecular compounds derived from lignin) appears on 676 US grants and 820 published applications in this corpus.
Search patents in C08H- Granted patents
- 676
- Published applications
- 820
- Assignees
- 442
- Inventors
- 1,725
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 6 | 0 |
| 1978 | 9 | 0 |
| 1979 | 3 | 0 |
| 1980 | 7 | 0 |
| 1981 | 10 | 0 |
| 1982 | 9 | 0 |
| 1983 | 7 | 0 |
| 1984 | 8 | 0 |
| 1985 | 6 | 0 |
| 1986 | 4 | 0 |
| 1987 | 7 | 0 |
| 1988 | 24 | 0 |
| 1989 | 9 | 0 |
| 1990 | 13 | 0 |
| 1991 | 16 | 0 |
| 1992 | 7 | 0 |
| 1993 | 5 | 0 |
| 1994 | 4 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 6 | 0 |
| 1999 | 6 | 0 |
| 2000 | 3 | 0 |
| 2001 | 9 | 2 |
| 2002 | 4 | 4 |
| 2003 | 6 | 4 |
| 2004 | 0 | 8 |
| 2005 | 3 | 2 |
| 2006 | 0 | 1 |
| 2007 | 5 | 4 |
| 2008 | 2 | 8 |
| 2009 | 2 | 8 |
| 2010 | 2 | 22 |
| 2011 | 4 | 14 |
| 2012 | 11 | 22 |
| 2013 | 17 | 48 |
| 2014 | 26 | 63 |
| 2015 | 28 | 64 |
| 2016 | 47 | 65 |
| 2017 | 42 | 55 |
| 2018 | 38 | 44 |
| 2019 | 33 | 45 |
| 2020 | 36 | 48 |
| 2021 | 34 | 52 |
| 2022 | 33 | 46 |
| 2023 | 29 | 49 |
| 2024 | 32 | 53 |
| 2025 | 32 | 56 |
| 2026 | 17 | 33 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for producing stabilized lignin having a high specific surface area6 Oct 2026US 12,753,283 B2Suncoal Industries GmbH
- Process for producing carbon from heat treated lignin1 Sep 2026US 12,722,975 B2Stora Enso OYJ
- Lignin-urea agricultural fertilizer7 Jul 2026US 12,673,903 B2Sustainable Fiber Technologies, LLC
- Lignin based biodegradable polymers and methods of making the same9 Jun 2026US 12,649,823 B2The Florida State University Research Foundation, Inc.
- Non-isocyanate polyurethanes from bio-based polyols2 Jun 2026US 12,643,979 B2Clemson University Research Foundation
- Functionalized lignin, a method for preparation thereof as well as uses thereof8 Oct 2026US 2026/0308335 A1
- Structured product of white lignin and/or white lignin-polysaccharide copolymer1 Oct 2026US 2026/0297267 A1Kyoto University
- Conversion of lignin into bio-phenols, lignin-based epoxides, and bio-based epoxy resin24 Sep 2026US 2026/0286066 A1Spero Renewables, LLC
- Oxyalkylated lignin polyols, related compositions, and related methods24 Sep 2026US 2026/0286067 A1Board of Trustees of Michigan State University
- Lignin epoxide adduct with thermoplastic properties17 Sep 2026US 2026/0275048 A1Metgen Oy
Most cited
By later US patents
- Recovery of lignin112US 4,764,596 ARepap Technologies Inc. · 1988
- Porphyrins97US 4,892,941 A1990
- Continuous counter-current organosolv processing of lignocellulosic feedstocks95US 7,465,791 B1Lignol Innovations Ltd. · 2008
- Broken-down organic lignin-cellulose silicate polymers85US 4,313,857 A1982
- Alkaline peroxide treatment of agricultural byproducts58US 4,806,475 AThe United States of America as represented by the Secretary of Agriculture · 1989