C07C 2/18
Acids of phosphorus
Official title: Acids of phosphorus; Salts thereof; Phosphorus oxides
C07C2/18 (Acids of phosphorus) appears on 68 US grants and 45 published applications in this corpus.
Search patents in C07C- Granted patents
- 68
- Published applications
- 45
- Assignees
- 30
- Inventors
- 149
- Latest grant
- 31 Dec 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 3 | 0 |
| 2000 | 4 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 3 |
| 2003 | 0 | 2 |
| 2004 | 2 | 2 |
| 2005 | 4 | 1 |
| 2006 | 0 | 1 |
| 2007 | 1 | 3 |
| 2008 | 1 | 3 |
| 2009 | 1 | 3 |
| 2010 | 5 | 2 |
| 2011 | 2 | 1 |
| 2012 | 1 | 2 |
| 2013 | 2 | 0 |
| 2014 | 2 | 5 |
| 2015 | 0 | 4 |
| 2016 | 4 | 1 |
| 2017 | 3 | 2 |
| 2018 | 4 | 2 |
| 2019 | 3 | 1 |
| 2020 | 0 | 1 |
| 2021 | 1 | 2 |
| 2022 | 1 | 2 |
| 2023 | 0 | 1 |
| 2024 | 3 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Catalytic conversion process and system with increased propylene production31 Dec 2024US 12,180,148 B2China Petroleum & Chemical Corporation
- Solid oxide and chemically-treated solid oxide catalysts for the production of polyalphaolefins23 Jul 2024US 12,043,588 B2Chevron Phillips Chemical Company LP
- Oligomerization process16 Jan 2024US 11,873,263 B2ExxonMobil Chemical Patents Inc.
- Phosphate-promoted nickel catalyst for high temperature oligomerization9 Aug 2022US 11,406,970 B2Purdue Research Foundation
- Phosphate-promoted nickel catalyst for high temperature oligomerization10 Aug 2021US 11,084,023 B2Purdue Research Foundation
- Solid oxide and chemically-treated solid oxide catalysts for the production of polyalphaolefins20 Jun 2024US 2024/0199510 A1Chevron Phillips Chemical Company LP
- Method for producing propylene oligomer20 Jul 2023US 2023/0227381 A1Idemitsu Kosan Co., Ltd.
- Oligomerization Process28 Jul 2022US 2022/0234967 A1ExxonMobil Chemical Patents Inc.
- Catalytic conversion process and system with increased propylene production9 Jun 2022US 2022/0177390 A1China Petroleum & Chemical Corporation
- Phosphate-promoted nickel catalyst for high temperature oligomerization25 Nov 2021US 2021/0362136 A1Purdue Research Foundation
Most cited
By later US patents
- Process for oligomer production and saturation38US 5,895,830 AUop LLC · 1999
- Process for oligomer production and saturation33US 5,990,367 AUop LLC · 1999
- Process for oligomer production and saturation27US 6,689,927 B1Uop Lcc · 2004
- Solid phosphoric acid catalyzed olefin polymerization process25US 4,334,118 AChevron Research Company · 1982
- Process for oligomer production and saturation22US 6,072,093 AUop LLC · 2000