C07G
Compounds of unknown constitution
Official title: COMPOUNDS OF UNKNOWN CONSTITUTION (sulfonated fats, oils or waxes of undetermined constitution C07C309/62)
C07G (Compounds of unknown constitution) appears on 732 US grants and 670 published applications in this corpus.
Search patents in C07G- Granted patents
- 732
- Published applications
- 670
- Assignees
- 420
- Inventors
- 1,667
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 48 | 0 |
| 1977 | 32 | 0 |
| 1978 | 15 | 0 |
| 1979 | 7 | 0 |
| 1980 | 17 | 0 |
| 1981 | 3 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 4 | 0 |
| 1985 | 8 | 0 |
| 1986 | 2 | 0 |
| 1987 | 5 | 0 |
| 1988 | 8 | 0 |
| 1989 | 10 | 0 |
| 1990 | 12 | 0 |
| 1991 | 8 | 0 |
| 1992 | 11 | 0 |
| 1993 | 11 | 0 |
| 1994 | 7 | 0 |
| 1995 | 9 | 0 |
| 1996 | 6 | 0 |
| 1997 | 11 | 0 |
| 1998 | 9 | 0 |
| 1999 | 9 | 0 |
| 2000 | 14 | 0 |
| 2001 | 22 | 3 |
| 2002 | 12 | 6 |
| 2003 | 4 | 9 |
| 2004 | 3 | 9 |
| 2005 | 0 | 3 |
| 2006 | 2 | 3 |
| 2007 | 2 | 4 |
| 2008 | 2 | 8 |
| 2009 | 0 | 8 |
| 2010 | 4 | 22 |
| 2011 | 6 | 13 |
| 2012 | 11 | 15 |
| 2013 | 18 | 33 |
| 2014 | 16 | 48 |
| 2015 | 24 | 67 |
| 2016 | 44 | 66 |
| 2017 | 38 | 42 |
| 2018 | 44 | 39 |
| 2019 | 31 | 38 |
| 2020 | 30 | 39 |
| 2021 | 22 | 44 |
| 2022 | 31 | 44 |
| 2023 | 23 | 33 |
| 2024 | 29 | 39 |
| 2025 | 32 | 27 |
| 2026 | 12 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Main groups
Granted patents with any code in the group
Recent patents
- Process of making sulfonated lignin-based compositions, sulfonated lignin-based compositions so-obtained and their use29 Sep 2026US 12,747,259 B2Rg Dispersants Ltd.
- Method and an apparatus for washing a crude lignin, a soluble carbohydrate containing fraction, a solid fraction and their use28 Jul 2026US 12,692,285 B2Upm-Kymmene Corporation
- Method for preparing cellulose and lignin oil by depolymerizing lignocellulose without exogenous hydrogen30 Jun 2026US 12,668,669 B2East China University of Science and Technology
- Methods for lignin extraction16 Jun 2026US 12,655,297 B2Canon Virginia, Inc.
- Method for producing oxidized lignins and system for producing oxidized lignins19 May 2026US 12,628,747 B2Rockwool A/S
- A method for producing a carbon material from lignin27 Aug 2026US 2026/0250134 A1Stora Enso OYJ
- A method for recovering lignin microparticles from spent pulping liquor, a method for preparing carbonized lignin, lignin microparticles, a coating composition, a resin, an electrochemical energy storage device carbonized lignin microparticles, and use of the lignin microparticles and the carbonized lignin microparticles13 Aug 2026US 2026/0234867 A1Teknologian tutkimuskeskus VTT Oy
- Acylation combined with esterification of lignin-derived material6 Aug 2026US 2026/0225989 A1
- Methods of separating lignin deconstruction feedstocks using centrifugal partition chromatography30 Jul 2026US 2026/0216619 A1Wisconsin Alumni Research Foundation
- Iron supply agents for plant growth2 Jul 2026US 2026/0184648 A1ReMA Corp.
Most cited
By later US patents
- Hydrolysis and fractionation of lignocellulosic biomass137US 6,022,419 AMidwest Research Institute · 2000
- Antibiotic substances110US 3,950,360 ASankyo Company, Limited · 1976
- Sulfurized compositions102US 4,119,549 AThe Lubrizol Corporation · 1978
- Aqueous fractionation of biomass based on novel carbohydrate hydrolysis kinetics76US 6,228,177 B1Midwest Research Institute · 2001
- Sulfurized compositions74US 4,191,659 AThe Lubrizol Corporation · 1980