C07C 67/20
From amides or lactams
Official title: from amides or lactams
C07C67/20 (From amides or lactams) appears on 59 US grants and 53 published applications in this corpus.
Search patents in C07C- Granted patents
- 59
- Published applications
- 53
- Assignees
- 32
- Inventors
- 157
- Latest grant
- 5 Jul 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 1 |
| 2003 | 3 | 0 |
| 2004 | 1 | 1 |
| 2005 | 0 | 1 |
| 2006 | 1 | 1 |
| 2007 | 1 | 1 |
| 2008 | 1 | 0 |
| 2009 | 0 | 5 |
| 2010 | 0 | 8 |
| 2011 | 1 | 4 |
| 2012 | 6 | 3 |
| 2013 | 2 | 4 |
| 2014 | 2 | 3 |
| 2015 | 4 | 1 |
| 2016 | 3 | 6 |
| 2017 | 4 | 5 |
| 2018 | 4 | 2 |
| 2019 | 4 | 0 |
| 2020 | 2 | 4 |
| 2021 | 2 | 0 |
| 2022 | 1 | 0 |
| 2023 | 0 | 2 |
| 2024 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Method for converting N,N-dialkylamide compound into ester compound using complex of fourth-period transition metal as catalyst5 Jul 2022US 11,377,415 B2Osaka University
- Method of producing methyl methacrylate or methacrylic acid16 Nov 2021US 11,174,215 B2Mitsubishi Chemical UK Limited
- Esterification unit for producing crude methyl methacrylate, esterification process using said unit and plant comprising said unit10 Aug 2021US 11,084,774 B2Trinseo Europe GmbH
- Installation and process for the preparation of hydrogen cyanide15 Dec 2020US 10,865,118 B2Arkema France
- Method for alcoholysis of amide30 Jun 2020US 10,696,617 B2Asymchem Laboratories (Tianjin) Co., Ltd.
- Optimized process for synthesizing methacrylic acid (maa) and/or alkyl methacrylate by reducing unwanted byproducts11 Jan 2024US 2024/0010604 A1Rohm Co., Ltd.
- Optimized process for synthesizing alkyl methacrylate by reducing unwanted byproducts28 Dec 2023US 2023/0416184 A1Rohm Co., Ltd.
- Improved process for preparing methyl methacrylate and/or methacrylic acid by reduced back mixing during conversion14 Dec 2023US 2023/0399286 A1Rohm Co., Ltd.
- Method for converting n,n-dialkylamide compound into ester compound using complex of fourth-period transition metal as catalyst24 Dec 2020US 2020/0399200 A1Osaka University
- Esterification unit for producing crude methyl methacrylate, esterification process using said unit and plant comprising said unit27 Aug 2020US 2020/0270195 A1Arkema France
Most cited
By later US patents
- Apparatus and process for the high yield production of methyl methacrylate or methacrylic acid51US 6,545,176 B1Rohm and Haas Company · 2003
- Apparatus and process for the high yield production of methyl methacrylate or methacrylic acid48US 6,610,177 B2Rohm and Haas Company · 2003
- Method of making carboxylic acid esters20US 4,055,590 ARohm Co., Ltd. · 1977
- Process for producing .alpha.,.beta.-unsaturated carboxylic acids or esters thereof15US 4,464,539 AMitsui Toatsu Chemicals, Inc. · 1984
- Synthesis of carboxylic acid esters11US 4,161,609 AE. I. Du Pont de Nemours and Company · 1979