C07C 45/90
Separation
Official title: Separation; Purification; Stabilisation; Use of additives
C07C45/90 (Separation) appears on 15 US grants and 9 published applications in this corpus.
Search patents in C07C- Granted patents
- 15
- Published applications
- 9
- Assignees
- 11
- Inventors
- 44
- Latest grant
- 17 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 5 |
| 2009 | 4 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 1 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
| 2025 | 0 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Solvent drying solution and processes therfor17 Mar 2026US 12,577,185 B2Aquafortus Technologies Limited
- (6R,10R)-6,10,14-trimetylpentadecan-2-one prepared from 6,10-dimetylundec-5-en-2-one or 6,10-dimetylundeca-5,9-dien-2-one27 Sep 2016US 9,452,961 B2Dsm IP Assets B.V.
- Process for the preparation of a tetraalkylcyclobutane-1,3-diol using an ruthenium-promoted cobalt-based catalyst23 Nov 2010US 7,838,707 B2Eastman Chemical Company
- Process for the preparation of a tetraalkycyclobutane-1,3-diol using a promoted-copper catalyst1 Sep 2009US 7,582,804 B2Eastman Chemical Company
- Process for the preparation of a tetraalkylcyclobutane-1,3-diol using a promoted nickel-based catalyst14 Jul 2009US 7,560,600 B2Eastman Chemical Company
- A solvent drying solution and processes therfor8 Aug 2024US 2024/0262772 A1Aquafortus Technologies Limited
- Method for producing ketene derivative10 Jun 2021US 2021/0171428 A1Daicel Corporation
- (6r,10r)-6,10,14-trimetylpentadecan-2-one prepared from 6,10-dimetylundec-5-en-2-one or 6,10-dimetylundeca-5,9-dien-2-one19 Nov 2015US 2015/0329457 A1Dsm IP Assets B.V.
- Cytoplasm exposure additive and method for exposing particles delivered into cell to cytoplasm from endocytic vesicles in intact cell15 Sep 2011US 2011/0223666 A1Mediscov Inc.
- Process for the preparation of a tetraalkylcyclobutane-1,3-diol using an ruthenium-promoted cobalt-based catalyst26 Jun 2008US 2008/0154069 A1Eastman Chemical Company
Most cited
By later US patents
- Process for the preparation of ketene7US 4,455,439 AHoechst Aktiengesellschaft · 1984
- Stabilized aqueous alkyldiketene emulsions6US 5,154,763 ABASF SE · 1992
- Process for isolating pure diketene with recovery of materials of value6US 5,370,774 AWacker Chemie AG · 1994
- Process for the preparation of tetraalkylcyclobutane-1,3-diol in the presence of a cobalt-based catalyst4US 7,521,583 B2Eastman Chemical Company · 2009
- Process for the preparation of a tetraalkylcyclobutane-1,3-diol using an ruthenium-promoted cobalt-based catalyst4US 7,838,707 B2Eastman Chemical Company · 2010