C07C 277/06
Purification or separation of guanidine
C07C277/06 (Purification or separation of guanidine) appears on 11 US grants and 18 published applications in this corpus.
Search patents in C07C- Granted patents
- 11
- Published applications
- 18
- Assignees
- 17
- Inventors
- 70
- Latest grant
- 20 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 1 |
| 2015 | 1 | 2 |
| 2016 | 2 | 0 |
| 2017 | 0 | 1 |
| 2018 | 0 | 2 |
| 2019 | 2 | 1 |
| 2020 | 0 | 0 |
| 2021 | 1 | 2 |
| 2022 | 0 | 2 |
| 2023 | 0 | 1 |
| 2024 | 0 | 1 |
| 2025 | 1 | 0 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Cocrystal comprising camostat and niclosamide, pharmaceutical composition comprising same and preparation method therefor20 Jan 2026US 12,527,762 B2Imdpharm Inc.
- Preparation method for metformin hydrochloride30 Sep 2025US 12,428,371 B2Asymchem Life Science (Tianjin) Co., Ltd
- Crystal of amino acid salt of 3-hydroxyisovaleric acid and production method thereof24 Aug 2021US 11,098,007 B2Kyowa Hakko Bio Co., Ltd.
- Process for the preparation of the compound N-(3,5-dimethylphenyl)-N′-(2-trifluoromethylphenyl) guanidine9 Jul 2019US 10,343,984 B2Chemo Research, S.L.
- Imaging agents16 Apr 2019US 10,259,781 B2The Regents of the University of Michigan
- Process for producing free-flowing particles comprising or consisting of an n-guanylamino acid28 May 2026US 2026/0146023 A1Evonik Operations GmbH
- C prime agents for treating metabolic disorders9 May 2024US 2024/0150279 A1The University of Toledo
- Cocrystal comprising camostat and niclosamide, pharmaceutical composition comprising same and preparation method therefor27 Jul 2023US 2023/0233502 A1Imdpharm Inc.
- Preparation Method for Metformin Hydrochloride11 Aug 2022US 2022/0251034 A1Asymchem Life Science (Tianjin) Co., Ltd
- Size exclusion chromatography utilizing low concentration amino acids in size exclusion chromatography mobile phase17 Mar 2022US 2022/0081468 A1Waters Technologies Corporation
Most cited
By later US patents
- Method for removal of guanidine compound from aqueous media2US 7,842,188 B2Sabic Innovative Plastics IP B.V. · 2010
- Recovery of guanidine carbonate from aqueous solutions1US 3,984,471 AChemie Linz Aktiengesellschaft · 1976
- (1S,2S,3S,4R)-3-[(1S)-1-acetylamino-2-ethyl-butyl]-4-guanidino-2-hydroxy-cyclopentyl-l-carboxylic acid hydrates pharmaceutical uses thereof1US 9,272,992 B2Institute of Pharmacology and Toxicology Academy of Military Medical Sciences P.L.A.China · 2016
- (1S,2S,3S,4R)-3-[(1S)-1-acetylamino-2-ethyl-butyl]-4-uanidino-2-hydroxyl-cyclopentyl-1-carboxylic acid hydrates pharmaceutical uses thereof1US 9,518,008 B2Institute of Pharmacology and Toxicology Academy of Military Medical Sciences P.L.A.China · 2016