C08F 2/32
Polymerisation in water-in-oil emulsions
C08F2/32 (Polymerisation in water-in-oil emulsions) appears on 386 US grants and 272 published applications in this corpus.
Search patents in C08F- Granted patents
- 386
- Published applications
- 272
- Assignees
- 171
- Inventors
- 814
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
| 1979 | 4 | 0 |
| 1980 | 5 | 0 |
| 1981 | 3 | 0 |
| 1982 | 4 | 0 |
| 1983 | 4 | 0 |
| 1984 | 7 | 0 |
| 1985 | 9 | 0 |
| 1986 | 4 | 0 |
| 1987 | 9 | 0 |
| 1988 | 11 | 0 |
| 1989 | 4 | 0 |
| 1990 | 10 | 0 |
| 1991 | 2 | 0 |
| 1992 | 7 | 0 |
| 1993 | 17 | 0 |
| 1994 | 16 | 0 |
| 1995 | 5 | 0 |
| 1996 | 2 | 0 |
| 1997 | 8 | 0 |
| 1998 | 14 | 0 |
| 1999 | 13 | 0 |
| 2000 | 9 | 0 |
| 2001 | 10 | 2 |
| 2002 | 13 | 4 |
| 2003 | 9 | 9 |
| 2004 | 5 | 11 |
| 2005 | 4 | 8 |
| 2006 | 5 | 12 |
| 2007 | 3 | 9 |
| 2008 | 4 | 6 |
| 2009 | 3 | 5 |
| 2010 | 6 | 18 |
| 2011 | 7 | 15 |
| 2012 | 5 | 11 |
| 2013 | 9 | 26 |
| 2014 | 13 | 13 |
| 2015 | 17 | 12 |
| 2016 | 15 | 15 |
| 2017 | 7 | 15 |
| 2018 | 12 | 8 |
| 2019 | 6 | 5 |
| 2020 | 8 | 16 |
| 2021 | 9 | 18 |
| 2022 | 11 | 17 |
| 2023 | 11 | 8 |
| 2024 | 8 | 5 |
| 2025 | 8 | 1 |
| 2026 | 3 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Manufacturing method for inverse emulsion polymer2 Jun 2026US 12,643,961 B2TouGas Holding GmbH
- Hipe foam and method for producing same31 Mar 2026US 12,590,176 B2Jsp Corporation
- Cosmetic composition in the form of a water-in-oil emulsion for treating hair to improve combing17 Feb 2026US 12,551,415 B2Societe D' Exploitation De Produits Pour Les Industries Chimiques Seppic
- Emulsion polymerisation26 Aug 2025US 12,398,218 B2Cargill Bioindustrial UK Limited
- Method for synthesising polymers by controlled-radical inverse emulsion polymerisation5 Aug 2025US 12,378,331 B2Snf Group
- Method of using inverse emulsion polymer17 Sep 2026US 2026/0275003 A1TouGas Holding GmbH
- Polymer and polymer emulsion, preparation method therefor, cement slurry, and application of polymer and polymer emulsion30 Jul 2026US 2026/0217885 A1China Petroleum & Chemical Corporation
- Polymer particle producing device, polymer particle producing method, program, and storage medium28 May 2026US 2026/0146108 A1Panasonic Intellectual Property Management Co., Ltd.
- Methods of generating microparticles and porous hydrogels using microfluidics20 Mar 2025US 2025/0092203 A1
- Preparation of amphiphilic block polymers by inverse micellar radical polymerization26 Sep 2024US 2024/0317903 A1Specialty Operations France
Most cited
By later US patents
- Thin-unit-wet absorbent foam materials for aqueous body fluids and process for making same1,130US 5,387,207 AThe Procter & Gamble Company · 1995
- Absorbent foam materials for aqueous body fluids and absorbent articles containing such materials745US 5,260,345 AThe Procter & Gamble Company · 1993
- Absorbent foams made from high internal phase emulsions useful for acquiring and distributing aqueous fluids410US 5,563,179 AThe Proctor & Gamble Company · 1996
- Cross-linked, water-swellable polymer microgels255US 4,172,066 AThe Dow Chemical Company · 1979
- Alkali metal acrylate or ammonium acrylate polymer excellent in salt solution-absorbency and process for producing same247US 4,340,706 ASeitetsu Kagaku Co., Ltd. · 1982