C07C 45/75
Reactions with formaldehyde
C07C45/75 (Reactions with formaldehyde) appears on 264 US grants and 124 published applications in this corpus.
Search patents in C07C- Granted patents
- 264
- Published applications
- 124
- Assignees
- 94
- Inventors
- 502
- Latest grant
- 9 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 13 | 0 |
| 1977 | 5 | 0 |
| 1978 | 9 | 0 |
| 1979 | 4 | 0 |
| 1980 | 14 | 0 |
| 1981 | 17 | 0 |
| 1982 | 9 | 0 |
| 1983 | 9 | 0 |
| 1984 | 7 | 0 |
| 1985 | 8 | 0 |
| 1986 | 6 | 0 |
| 1987 | 3 | 0 |
| 1988 | 4 | 0 |
| 1989 | 9 | 0 |
| 1990 | 8 | 0 |
| 1991 | 9 | 0 |
| 1992 | 6 | 0 |
| 1993 | 8 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 4 | 0 |
| 1997 | 3 | 0 |
| 1998 | 5 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 6 | 0 |
| 2002 | 3 | 1 |
| 2003 | 2 | 4 |
| 2004 | 2 | 2 |
| 2005 | 0 | 6 |
| 2006 | 4 | 1 |
| 2007 | 4 | 3 |
| 2008 | 3 | 4 |
| 2009 | 2 | 4 |
| 2010 | 4 | 5 |
| 2011 | 2 | 5 |
| 2012 | 2 | 2 |
| 2013 | 1 | 3 |
| 2014 | 5 | 8 |
| 2015 | 6 | 6 |
| 2016 | 8 | 13 |
| 2017 | 7 | 10 |
| 2018 | 8 | 4 |
| 2019 | 7 | 6 |
| 2020 | 7 | 9 |
| 2021 | 2 | 4 |
| 2022 | 3 | 8 |
| 2023 | 4 | 2 |
| 2024 | 4 | 7 |
| 2025 | 1 | 2 |
| 2026 | 0 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Sandalwood-type fragrance compounds9 Sep 2025US 12,410,113 B2Symrise AG
- Method for continuously producing diols from aldehydes by means of Raney cobalt catalysis22 Oct 2024US 12,122,737 B2Oq Chemicals GmbH
- Continuous process for preparing methacrolein5 Mar 2024US 11,919,846 B2Rohm Co., Ltd.
- Process for producing methacrylic acid or methacrylic acid esters20 Feb 2024US 11,905,239 B2Rohm Co., Ltd.
- Process for producing methacrylic acid or methacrylic acid esters9 Jan 2024US 11,866,387 B2Rohm Co., Ltd.
- Process for the synthesis of isophorone in the liquid phase with recycling of the alkaline catalyst by electrodialysis30 Jul 2026US 2026/0217636 A1Arkema France
- Optimized processing of reactor effluent in the synthesis of methacrolein from propionaldehyde and formaldehyde18 Jun 2026US 2026/0167594 A1Rohm Co., Ltd.
- Method for preparing neopentyl glycol14 May 2026US 2026/0132095 A1LG Chem.Ltd.
- A process of preparing divanillylmethane29 Jan 2026US 2026/0028300 A1Aditya Birla Chemicals (Thailand) Ltd. (Advanced Materials)
- Process for concurrent methyl methacrylate and methacrylic acid production15 Jan 2026US 2026/0015308 A1
Most cited
By later US patents
- Process for the preparation of low molecular weight polyhydroxyl compounds74US 4,301,310 ABayer Aktiengesellschaft · 1981
- Branched amides of L-aspartyl-d-amino acid dipeptides70US 4,411,925 APfizer Inc. · 1983
- Methylene beta-diketone monomers, methods for making methylene beta-diketone monomers, polymerizable compositions and products formed therefrom54US 9,221,739 B2Sirrus, Inc. · 2015
- 1-Oxo-2,2-disubstituted-5-indanyloxy(or thio)alkanoic acids49US 3,984,465 AMerck & Co., Inc. · 1976
- Process for the preparation of .alpha.-alkylacroleins48US 4,496,770 ABASF SE · 1985