C10L 1/2381
Polyamides
Official title: {polyamides; polyamide-esters; polyurethane, polyureas (C10L1/221 takes precedence)}
C10L1/2381 (Polyamides) appears on 68 US grants and 59 published applications in this corpus.
Search patents in C10L- Granted patents
- 68
- Published applications
- 59
- Assignees
- 36
- Inventors
- 168
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 6 | 0 |
| 1992 | 1 | 0 |
| 1993 | 4 | 0 |
| 1994 | 3 | 0 |
| 1995 | 3 | 0 |
| 1996 | 3 | 0 |
| 1997 | 0 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 1 |
| 2003 | 1 | 1 |
| 2004 | 0 | 2 |
| 2005 | 1 | 2 |
| 2006 | 1 | 2 |
| 2007 | 1 | 3 |
| 2008 | 0 | 6 |
| 2009 | 1 | 4 |
| 2010 | 1 | 4 |
| 2011 | 2 | 1 |
| 2012 | 0 | 4 |
| 2013 | 5 | 5 |
| 2014 | 3 | 5 |
| 2015 | 3 | 1 |
| 2016 | 5 | 1 |
| 2017 | 3 | 4 |
| 2018 | 2 | 1 |
| 2019 | 1 | 0 |
| 2020 | 2 | 2 |
| 2021 | 1 | 0 |
| 2022 | 1 | 1 |
| 2023 | 0 | 2 |
| 2024 | 3 | 5 |
| 2025 | 0 | 1 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Mixtures for improving the stability of additive packages22 Sep 2026US 12,742,128 B2BASF SE
- High-concentration filling slurry of coal gangue and preparation method thereof9 Jun 2026US 12,649,887 B1Taiyuan University of Science and Technology
- Pour point depressant6 Aug 2024US 12,054,584 B2BYK-Chemie GmbH
- Compositions and methods of dispergating paraffins in sulphur-low fuel oils28 May 2024US 11,993,756 B2Clariant International Ltd.
- Nitrogen-containing terpolymer biodiesel solidification point depressant, and preparation method and application thereof13 Feb 2024US 11,898,115 B2Shanghai Institute of Technology
- High-concentration filling slurry of coal gangue and preparation method thereof11 Jun 2026US 2026/0159773 A1Taiyuan University of Science and Technology
- Wax treatment and method of use15 May 2025US 2025/0154424 A1Independence Oilfield Chemicals LLC
- Polyamide fuel additives5 Dec 2024US 2024/0400920 A1Chevron U.S.A.Inc.
- Compositions And Methods Of Dispergating Paraffins In Sulphur-Low Fuel Oils4 Jul 2024US 2024/0218276 A1Clariant International Ltd.
- New mixtures for improving the stability of additive packages14 Mar 2024US 2024/0084208 A1BASF SE
Most cited
By later US patents
- Polymers derived from olefins useful as lubricant and fuel oil additives, processes for preparation of such polymers and additives and use thereof (PT-1267)72US 5,811,379 AExxon Chemical Patents Inc. · 1998
- Reduction of nitrogen oxides emissions from diesel engines58US 5,535,708 APlatinum Plus, Inc. · 1996
- Polymers derived from olefins useful as lubricant and fuel oil additives, processes for preparation of such polymers and additives and use thereof46US 6,017,859 AExxon Chemical Patents Inc. · 2000
- Oil soluble dispersants suitable for use in fuels and lubricants43US 5,464,549 AEthyl Corporation · 1995
- Reduction of nitrogen oxides emissions from diesel engines41US 5,404,841 A1995