C07C 37/52
By splitting polyaromatic compounds
Official title: by splitting polyaromatic compounds, e.g. polyphenolalkanes
C07C37/52 (By splitting polyaromatic compounds) appears on 91 US grants and 75 published applications in this corpus.
Search patents in C07C- Granted patents
- 91
- Published applications
- 75
- Assignees
- 66
- Inventors
- 289
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 3 | 0 |
| 1981 | 3 | 0 |
| 1982 | 5 | 0 |
| 1983 | 3 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 3 | 0 |
| 1989 | 3 | 0 |
| 1990 | 3 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 1 | 1 |
| 2011 | 0 | 2 |
| 2012 | 0 | 3 |
| 2013 | 1 | 8 |
| 2014 | 2 | 2 |
| 2015 | 5 | 6 |
| 2016 | 4 | 5 |
| 2017 | 6 | 4 |
| 2018 | 4 | 1 |
| 2019 | 2 | 2 |
| 2020 | 2 | 4 |
| 2021 | 2 | 5 |
| 2022 | 6 | 9 |
| 2023 | 2 | 11 |
| 2024 | 4 | 5 |
| 2025 | 2 | 1 |
| 2026 | 5 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Monomer composition for synthesizing recycled plastic, preparation method thereof, recycled plastic, and molded product using the same28 Jul 2026US 12,692,358 B2LG Chem.Ltd.
- Monomer composition for synthesizing recycled plastic, preparation method thereof, recycled plastic, and molded product using the same16 Jun 2026US 12,655,266 B2LG Chem.Ltd.
- Monomer composition for synthesizing recycled plastic, preparation method thereof, recycled plastic, and molded product using the same16 Jun 2026US 12,655,267 B2LG Chem.Ltd.
- Phenol recovery of bisphenol-A mother liquor purge using purification train in the phenol production unit21 Apr 2026US 12,606,510 B2Sabic Global Technologies B.V.
- Base-mediated method for the recycling of epoxy resin-carbon fiber composites21 Apr 2026US 12,606,690 B2Alliance for Energy Innovation, LLC
- Method for producing lignin decomposition product, method for producing methanol, and lignin-based composition17 Sep 2026US 2026/0274776 A1Kyushu University, National University Corporation
- Monomer composition for synthesising recycled plastic, preparation method thereof, recycled plastic, and molded product using the same10 Sep 2026US 2026/0265483 A1LG Chem.Ltd.
- Alkyl bisphenol composition and method for preparing the same2 Jul 2026US 2026/0184658 A1Industrial Technology Research Institute
- Base-mediated deconstruction of epoxy resins14 May 2026US 2026/0132266 A1Aarhus Universitet
- Method for producing bisphenol and method for producing recycled polycarbonate resin6 Nov 2025US 2025/0340712 A1Mitsubishi Chemical Corporation
Most cited
By later US patents
- Lignin hydrocracking process to produce phenol and benzene51US 4,420,644 AHydrocarbon Research, Inc. · 1983
- Hydrocracking process for liquefaction of lignin32US 4,647,704 AUop LLC · 1987
- Phenolic compounds containing/neutral fractions extract and products derived therefrom from fractionated fast-pyrolysis oils23US 5,223,601 AMidwest Research Institute Ventures, Inc. · 1993
- Lignin cracking process using fast fluidized bed reactions22US 4,409,416 A1983
- Method to manufacture bisphenol A22US 5,198,591 AABB Lummus Crest Inc. · 1993