C07C 51/487
By treatment giving rise to chemical modification
Official title: by treatment giving rise to chemical modification (by chemisorption C07C51/47)
C07C51/487 (By treatment giving rise to chemical modification) appears on 640 US grants and 312 published applications in this corpus.
Search patents in C07C- Granted patents
- 640
- Published applications
- 312
- Assignees
- 311
- Inventors
- 1,424
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 15 | 0 |
| 1977 | 13 | 0 |
| 1978 | 10 | 0 |
| 1979 | 3 | 0 |
| 1980 | 17 | 0 |
| 1981 | 21 | 0 |
| 1982 | 14 | 0 |
| 1983 | 16 | 0 |
| 1984 | 15 | 0 |
| 1985 | 12 | 0 |
| 1986 | 11 | 0 |
| 1987 | 12 | 0 |
| 1988 | 15 | 0 |
| 1989 | 16 | 0 |
| 1990 | 23 | 0 |
| 1991 | 10 | 0 |
| 1992 | 13 | 0 |
| 1993 | 34 | 0 |
| 1994 | 18 | 0 |
| 1995 | 12 | 0 |
| 1996 | 18 | 0 |
| 1997 | 14 | 0 |
| 1998 | 23 | 0 |
| 1999 | 10 | 0 |
| 2000 | 13 | 0 |
| 2001 | 16 | 2 |
| 2002 | 18 | 12 |
| 2003 | 13 | 13 |
| 2004 | 9 | 14 |
| 2005 | 3 | 16 |
| 2006 | 13 | 19 |
| 2007 | 13 | 14 |
| 2008 | 13 | 23 |
| 2009 | 13 | 18 |
| 2010 | 9 | 7 |
| 2011 | 18 | 12 |
| 2012 | 7 | 16 |
| 2013 | 6 | 11 |
| 2014 | 15 | 14 |
| 2015 | 10 | 13 |
| 2016 | 13 | 14 |
| 2017 | 8 | 10 |
| 2018 | 12 | 17 |
| 2019 | 10 | 9 |
| 2020 | 12 | 15 |
| 2021 | 15 | 4 |
| 2022 | 4 | 7 |
| 2023 | 2 | 11 |
| 2024 | 4 | 8 |
| 2025 | 2 | 7 |
| 2026 | 4 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Colorless monochloroacetic acid and the method of preparation thereof2 Jun 2026US 12,643,845 B2Pcc Mcaa Sp. Z O. O.
- Removal of aldehydes in acetic acid production12 May 2026US 12,623,991 B2LyondellBasell Acetyls, LLC
- Process for producing acrylic acid10 Mar 2026US 12,570,596 B2LG Chem.Ltd.
- Method for preparing acrylic acid10 Feb 2026US 12,545,634 B2LG Chem.Ltd.
- Method for producing levulinic acid9 Dec 2025US 12,492,159 B2Department of Biotechnology
- Method for chemical-mechanical depolymerizing polyester25 Jun 2026US 2026/0176417 A1Kolon Industries, Inc.
- Process for recovering acrylic acid value from heavy waste byproducts11 Jun 2026US 2026/0159470 A1Dow Global Technologies LLC
- Bio-based succinic acid composition, preparation method therefor, and use thereof28 May 2026US 2026/0146267 A1(Kingfa Sci. & Tech.Co., Ltd.)
- Method for non-catalytic extraction of phenolic aldehydes from lignocellulosic biomass30 Apr 2026US 2026/0116837 A1
- Enantiomeric enrichment of l-lactic acid or salt thereof26 Feb 2026US 2026/0055044 A1TripleW Ltd.
Most cited
By later US patents
- Methods for recovering acrylic acid353US 6,252,110 B1Nippon Shokubai Co., Ltd. · 2001
- Combined fatty acid composition for treatment or prophylaxis of thrombo-embolic conditions196US 4,526,902 ACentury Laboratories, Inc. · 1985
- Recovery of acetic acid from dilute aqueous streams formed during a carbonylation process161US 5,599,976 AHoechst Celanese Corporation · 1997
- Method for preparing pure EPA and pure DHA119US 6,846,942 B22005
- N-substituted butyramide derivatives useful for treatment of conditions responsive to inhibition of enkephalinase88US 4,939,261 ACiba-Geigy Corporation · 1990