C08G 18/12
Using two or more compounds having active hydrogen in the first polymerisation
Official title: using two or more compounds having active hydrogen in the first polymerisation step
C08G18/12 (Using two or more compounds having active hydrogen in the first polymerisation) appears on 1,998 US grants and 2,493 published applications in this corpus.
Search patents in C08G- Granted patents
- 1,998
- Published applications
- 2,493
- Assignees
- 804
- Inventors
- 5,503
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 8 | 0 |
| 1978 | 9 | 0 |
| 1979 | 10 | 0 |
| 1980 | 11 | 0 |
| 1981 | 14 | 0 |
| 1982 | 8 | 0 |
| 1983 | 13 | 0 |
| 1984 | 7 | 0 |
| 1985 | 10 | 0 |
| 1986 | 17 | 0 |
| 1987 | 13 | 0 |
| 1988 | 11 | 0 |
| 1989 | 17 | 0 |
| 1990 | 28 | 0 |
| 1991 | 36 | 0 |
| 1992 | 36 | 0 |
| 1993 | 19 | 0 |
| 1994 | 22 | 0 |
| 1995 | 16 | 0 |
| 1996 | 29 | 0 |
| 1997 | 30 | 0 |
| 1998 | 37 | 0 |
| 1999 | 44 | 0 |
| 2000 | 45 | 0 |
| 2001 | 34 | 9 |
| 2002 | 46 | 63 |
| 2003 | 63 | 86 |
| 2004 | 46 | 77 |
| 2005 | 40 | 73 |
| 2006 | 38 | 99 |
| 2007 | 32 | 91 |
| 2008 | 27 | 92 |
| 2009 | 34 | 110 |
| 2010 | 42 | 99 |
| 2011 | 53 | 108 |
| 2012 | 41 | 86 |
| 2013 | 76 | 90 |
| 2014 | 71 | 74 |
| 2015 | 73 | 85 |
| 2016 | 65 | 70 |
| 2017 | 54 | 94 |
| 2018 | 55 | 66 |
| 2019 | 54 | 96 |
| 2020 | 55 | 123 |
| 2021 | 81 | 158 |
| 2022 | 79 | 186 |
| 2023 | 94 | 152 |
| 2024 | 95 | 140 |
| 2025 | 100 | 98 |
| 2026 | 52 | 68 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Polyol premixes, thermally insulating rigid polyurethane foams and methods for their production22 Sep 2026US 12,742,034 B2Covestro LLC
- Dispersions that are substantially free of volatile organic compounds and that have a high solids content8 Sep 2026US 12,729,266 B2Stahl International B.V.
- (meth)acrylate-functional radiation curable compositions for additive fabrication18 Aug 2026US 12,709,697 B2Stratasys, Inc.
- Fiber base material and artificial leather11 Aug 2026US 12,703,767 B2DIC Corporation
- Liquid moisture curable polyurethane with improved adhesion to aluminum11 Aug 2026US 12,703,808 B2Henkel AG & Co. KGaA
- Use of Polyurethane Elastomers Based on or Use of Kit-Of-Parts Comprising MDI-Polyadipate Prepolymers and Polyamine Chain-Extenders in Pulp and Paper Applications, Preferably in the Manufacture of Die Cutting Pads, Anvil Covers, Rollers and Zero Crush Wheels8 Oct 2026US 2026/0308850 A1Covestro Deutschland AG
- Isocyanate-reactive compositions, rigid polyurethane foams and methods for their production24 Sep 2026US 2026/0286035 A1Covestro LLC
- Aqueous dispersion of polyurethane resin and coating agent3 Sep 2026US 2026/0258186 A1DKS Co. Ltd.
- Modified bio-based waterborne polyurethane, method for preparing same, and use thereof27 Aug 2026US 2026/0250452 A1Mojia (Shanghai) Biotech Co., Ltd
- Polyurethane-polyurea aqueous dispersion, and preparation method therefor and use thereof27 Aug 2026US 2026/0250455 A1Wanhua Chemical Group Co., Ltd.
Most cited
By later US patents
- Fast curing compositions996US 6,894,140 B2Tyco Healthecare Gropu LP · 2005
- Surface-modifying endgroups for biomedical polymers517US 5,589,563 AThe Polymer Technology Group · 1996
- Segmented polyether polyurethane385US 4,849,458 AMatrix Medica, Inc. · 1989
- Systems for premeating molecules of predetermined molecular weight range361US 5,756,632 AThe Polymer Technology Group · 1998
- Copolymers and non-porous, semi-permeable membrane thereof and its use for permeating molecules of predetermined molecular weight range303US 5,428,123 AThe Polymer Technology Group · 1995