C08L 2203/18
Used for pipes
Official title: used for pipes
C08L2203/18 (Used for pipes) appears on 239 US grants and 405 published applications in this corpus.
Search patents in C08L- Granted patents
- 239
- Published applications
- 405
- Assignees
- 171
- Inventors
- 884
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 2 |
| 2007 | 0 | 0 |
| 2008 | 1 | 1 |
| 2009 | 0 | 2 |
| 2010 | 1 | 2 |
| 2011 | 0 | 7 |
| 2012 | 2 | 3 |
| 2013 | 4 | 2 |
| 2014 | 1 | 2 |
| 2015 | 7 | 12 |
| 2016 | 2 | 25 |
| 2017 | 12 | 15 |
| 2018 | 11 | 41 |
| 2019 | 16 | 48 |
| 2020 | 30 | 51 |
| 2021 | 34 | 35 |
| 2022 | 21 | 50 |
| 2023 | 25 | 35 |
| 2024 | 27 | 26 |
| 2025 | 27 | 33 |
| 2026 | 13 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Thermoplastic resin composition for refrigerant transportation hose and refrigerant transportation hose28 Jul 2026US 12,692,391 B2The Yokohama Rubber Co., Ltd.
- Preparation method of ptfe dispersion resin with core-shell structure14 Jul 2026US 12,679,911 B2Zhejiang Juhua Technology Center Co., Ltd
- Anti-aging pipe14 Jul 2026US 12,679,941 B2
- Polyethylene pipe resin with high resistance to slow crack growth30 Jun 2026US 12,668,647 B2Borealis AG
- Polyolefin pipe resin with very good sagging and slow crack growth resistance30 Jun 2026US 12,668,689 B2Borealis AG
- Polyamide composition and polar graphene1 Oct 2026US 2026/0297326 A1Arkema France
- Methods for polymer materials17 Sep 2026US 2026/0275060 A1Qinetiq Limited
- High pressure hose outer surface rubber composition and high pressure hose17 Sep 2026US 2026/0275089 A1Sumitomo Riko Company Limited
- Fluorine resin material, laminate, tube, and tube manufacturing method13 Aug 2026US 2026/0234388 A1Daikin Industries, Ltd.
- Polypropylene random copolymer compositions with improved impact resistance for pipe applications30 Jul 2026US 2026/0217959 A1Abu Dhabi Polymers Co. Ltd (Borouge) - Sole Proprietorship L.L.C.
Most cited
By later US patents
- Polyethylene blends37US 5,306,775 APhillips Petroleum Company · 1994
- Low melting PP homopolymer with high content of regioerrors and high molecular weight25US 10,519,259 B2Borealis AG · 2019
- Molded article and manufacturing method for molded article19US 11,826,975 B2Daikin Industries, Ltd. · 2023
- Bimodal polyethylene resins and pipes produced therefrom14US 10,590,213 B2Chevron Phillips Chemical Company LP · 2020
- Polyethylene with reduced melt fracture10US 5,459,187 ANovacor Chemicals Ltd. · 1995