C03C 25/326
Polyureas
Official title: Polyureas; Polyurethanes
C03C25/326 (Polyureas) appears on 90 US grants and 125 published applications in this corpus.
Search patents in C03C- Granted patents
- 90
- Published applications
- 125
- Assignees
- 63
- Inventors
- 293
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 3 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 3 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 4 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 4 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 2 |
| 2003 | 0 | 5 |
| 2004 | 3 | 4 |
| 2005 | 1 | 1 |
| 2006 | 1 | 3 |
| 2007 | 2 | 6 |
| 2008 | 0 | 6 |
| 2009 | 0 | 1 |
| 2010 | 1 | 2 |
| 2011 | 0 | 4 |
| 2012 | 1 | 2 |
| 2013 | 1 | 4 |
| 2014 | 0 | 5 |
| 2015 | 0 | 5 |
| 2016 | 4 | 3 |
| 2017 | 1 | 6 |
| 2018 | 3 | 6 |
| 2019 | 5 | 7 |
| 2020 | 3 | 6 |
| 2021 | 3 | 10 |
| 2022 | 4 | 15 |
| 2023 | 7 | 8 |
| 2024 | 9 | 11 |
| 2025 | 4 | 1 |
| 2026 | 6 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Resin composition, optical fiber, and method for producing optical fiber18 Aug 2026US 12,709,686 B2Sumitomo Electric Industries, Ltd.
- Resin composition, optical fiber, and method for producing optical fiber9 Jun 2026US 12,649,812 B2Sumitomo Electric Industries, Ltd.
- Resin composition, optical fiber, and method for producing optical fiber2 Jun 2026US 12,643,973 B2Sumitomo Electric Industries, Ltd.
- Glass composition for glass fibers, glass fibers, glass fiber fabric, and glass fiber-reinforced resin composition19 May 2026US 12,630,468 B2Nitto Boseki Co., Ltd.
- Optical fiber21 Apr 2026US 12,607,798 B2Sumitomo Electric Industries, Ltd.
- Fiber sizing agent1 Oct 2026US 2026/0296959 A1DKS Co. Ltd.
- Non-Ionic Hydrophilic Polyurethane Dispersions with Methacrylate Double Bonds4 Jun 2026US 2026/0152596 A1Covestro Deutschland AG
- Sizing agent for inorganic fibers, inorganic fibers, method for producing same, and composite material17 Apr 2025US 2025/0122381 A1Takemoto Yushi Kabushiki Kaisha
- Resin composition for optical fiber coating, colored coating material for optical fiber, and optical fiber12 Dec 2024US 2024/0409773 A1Sumitomo Electric Industries, Ltd.
- Optical fiber, optical fiber ribbon, and optical fiber cable28 Nov 2024US 2024/0393528 A1Sumitomo Electric Industries, Ltd.
Most cited
By later US patents
- Optical fiber or filament reinforcement coating42US 5,182,784 AOwens Corning Fiberglas Technology, Inc. · 1993
- Optical fibre coatings and method for producing same38US 5,416,880 AZeneca Limited · 1995
- Sizing composition to yield sized glass fibers with improved UV stability35US 4,271,229 APPG Industries, Inc. · 1981
- Chemically treated glass fibers for reinforcing polymeric matrices33US 4,615,946 APPG Industries, Inc. · 1986
- Aqueous compositions containing an at least partially blocked polyisocyanates and a trimerization catalyst and coatings and binders prepared therefrom33US 5,157,074 AMiles Inc. · 1992