C09K 8/885
Obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
Official title: {obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds}
C09K8/885 (Obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds) appears on 168 US grants and 147 published applications in this corpus.
Search patents in C09K- Granted patents
- 168
- Published applications
- 147
- Assignees
- 88
- Inventors
- 342
- Latest grant
- 7 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 5 | 0 |
| 1980 | 3 | 0 |
| 1981 | 6 | 0 |
| 1982 | 11 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 4 | 0 |
| 1988 | 5 | 0 |
| 1989 | 6 | 0 |
| 1990 | 4 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 5 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 1 | 4 |
| 2009 | 3 | 3 |
| 2010 | 0 | 1 |
| 2011 | 1 | 3 |
| 2012 | 1 | 1 |
| 2013 | 2 | 1 |
| 2014 | 1 | 9 |
| 2015 | 2 | 8 |
| 2016 | 6 | 20 |
| 2017 | 5 | 20 |
| 2018 | 12 | 13 |
| 2019 | 12 | 11 |
| 2020 | 13 | 11 |
| 2021 | 5 | 12 |
| 2022 | 11 | 7 |
| 2023 | 10 | 6 |
| 2024 | 6 | 5 |
| 2025 | 6 | 7 |
| 2026 | 5 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Radiation activated well treatment7 Apr 2026US 12,595,407 B2Saudi Arabian Oil Company
- Time dependent tracer release in stimulated gas wells using composite particles made of thermoplastic polyester and polyamide blends of various ratios10 Mar 2026US 12,570,893 B2Saudi Arabian Oil Company
- Time dependent tracer release in stimulated gas wells using composite particles made of two different thermoplastic polyester blends of various ratios10 Mar 2026US 12,571,303 B2Saudi Arabian Oil Company
- Tracer compositions17 Feb 2026US 12,552,983 B2Saudi Arabian Oil Company
- Compositions for enhancing viscosity of subterranean fluids utilizing chelating agents3 Feb 2026US 12,540,271 B2King Fahd University of Petroleum and Minerals
- Water-lock releasing chemical agent for oil and gas reservoirs, preparation method therefor and use thereof6 Aug 2026US 2026/0226342 A1China Petroleum & Chemical Corporation
- Time dependent tracer release in stimulated gas wells using composite particles made of thermoplastic polyester and polyamide blends of various ratios1 Jan 2026US 2026/0002072 A1Aramco Services Company
- Method and compositions for drag reducer in downhole applications11 Dec 2025US 2025/0376616 A1King Fahd University of Petroleum and Minerals
- Compositions for enhancing viscosity of subterranean fluids utilizing chelating agents11 Dec 2025US 2025/0376618 A1King Fahd University of Petroleum and Minerals
- Time dependent tracer release in stimulated gas wells using composite particles made of two different thermoplastic polyester blends of various ratios20 Nov 2025US 2025/0354481 A1Aramco Serices Company
Most cited
By later US patents
- Well treatment process210US 4,957,165 AConoco Inc. · 1990
- Composition and method for temporarily reducing permeability of subterranean formations162US 4,715,967 AE. I. Du Pont de Nemours and Company · 1987
- Phenolic resin coated proppants with reduced hydraulic fluid interaction138US 5,218,038 ABorden, Inc. · 1993
- Reducing the permeability of a rock formation137US 4,817,721 AConoco Inc. · 1989
- Method and process for the stabilization of resin coated particulates80US 5,520,250 ATechnisand, Inc. · 1996