C08G 18/1875
Containing ammonium salts or mixtures of secondary of tertiary amines and acids
Official title: {containing ammonium salts or mixtures of secondary of tertiary amines and acids}
C08G18/1875 (Containing ammonium salts or mixtures of secondary of tertiary amines and acids) appears on 295 US grants and 234 published applications in this corpus.
Search patents in C08G- Granted patents
- 295
- Published applications
- 234
- Assignees
- 141
- Inventors
- 722
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 2 | 0 |
| 1978 | 5 | 0 |
| 1979 | 5 | 0 |
| 1980 | 6 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 6 | 0 |
| 1984 | 12 | 0 |
| 1985 | 9 | 0 |
| 1986 | 8 | 0 |
| 1987 | 0 | 0 |
| 1988 | 9 | 0 |
| 1989 | 3 | 0 |
| 1990 | 4 | 0 |
| 1991 | 5 | 0 |
| 1992 | 10 | 0 |
| 1993 | 12 | 0 |
| 1994 | 15 | 0 |
| 1995 | 5 | 0 |
| 1996 | 5 | 0 |
| 1997 | 3 | 0 |
| 1998 | 7 | 0 |
| 1999 | 6 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 1 |
| 2002 | 8 | 4 |
| 2003 | 6 | 6 |
| 2004 | 3 | 4 |
| 2005 | 1 | 11 |
| 2006 | 3 | 3 |
| 2007 | 2 | 7 |
| 2008 | 2 | 9 |
| 2009 | 3 | 2 |
| 2010 | 1 | 7 |
| 2011 | 1 | 13 |
| 2012 | 3 | 9 |
| 2013 | 8 | 12 |
| 2014 | 10 | 9 |
| 2015 | 6 | 6 |
| 2016 | 6 | 11 |
| 2017 | 10 | 15 |
| 2018 | 10 | 22 |
| 2019 | 13 | 7 |
| 2020 | 15 | 18 |
| 2021 | 10 | 10 |
| 2022 | 6 | 14 |
| 2023 | 7 | 9 |
| 2024 | 3 | 12 |
| 2025 | 3 | 8 |
| 2026 | 5 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Producing isocyanate-terminated, urethane group-containing prepolymers1 Sep 2026US 12,723,123 B2Covestro Deutschland AG
- Storage-stable polyisocyanate composition and preparation method therefor1 Sep 2026US 12,723,124 B2Wanhua Chemical Group Co., Ltd.
- Water-dispersible polyisocyanate, aqueous polyurethane resin composition, and article25 Aug 2026US 12,715,956 B2Mitsui Chemicals, Inc.
- Water-dispersible modified polyisocyanates3 Mar 2026US 12,565,559 B2Covestro Deutschland AG
- Water repellent composition, method for producing water repellent composition, and fiber product3 Feb 2026US 12,540,245 B2Daikin Industries, Ltd.
- Method for Preparing Isocyanurate-Group-Containing Polyisocyanates3 Sep 2026US 2026/0258187 A1Covestro Deutschland AG
- Closed-cell water-blown rigid polyurethane foams and methods for their production20 Aug 2026US 2026/0242530 A1Covestro LLC
- Polyisocyanate composition13 Aug 2026US 2026/0234113 A1Wanhua Chemical Group Co., Ltd.
- Acid-blocked pyrrolidine catalysts for polyurethane foam30 Jul 2026US 2026/0217893 A1Huntsman Petrochemical Corporation
- Methods of preparing ultra-low density spray polyurethane foam and uses thereof5 Mar 2026US 2026/0062514 A1General Coatings Manufacturing Corp.
Most cited
By later US patents
- Catalysis of organic isocyanate reactions103US 4,040,992 AAir Products and Chemicals, Inc. · 1977
- Polyurethane sealant compositions76US 5,852,137 AEssex Specialty Products, Inc. · 1998
- Process for the production of polyisocyanates containing isocyanurate groups and their use73US 4,960,848 ABayer Aktiengesellschaft · 1990
- Isocyanato-isocyanurates, and process for the production thereof68US 4,419,513 ABayer Aktiengesellschaft · 1983
- Composition for urethane-base plastic lens, urethane-base plastic lens obtained from the composition, and process for the production of the plastic lens66US 5,693,738 AMitsui Toatsu Chemicals, Inc. · 1997