C09D 167/04
Polyesters derived from hydroxycarboxylic acids
Official title: Polyesters derived from hydroxycarboxylic acids, e.g. lactones (C09D167/06 takes precedence)
C09D167/04 (Polyesters derived from hydroxycarboxylic acids) appears on 316 US grants and 384 published applications in this corpus.
Search patents in C09D- Granted patents
- 316
- Published applications
- 384
- Assignees
- 230
- Inventors
- 942
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 4 | 0 |
| 1979 | 3 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 4 | 0 |
| 1994 | 3 | 0 |
| 1995 | 6 | 0 |
| 1996 | 7 | 0 |
| 1997 | 5 | 0 |
| 1998 | 16 | 0 |
| 1999 | 8 | 0 |
| 2000 | 15 | 0 |
| 2001 | 5 | 2 |
| 2002 | 9 | 3 |
| 2003 | 2 | 4 |
| 2004 | 3 | 8 |
| 2005 | 3 | 6 |
| 2006 | 3 | 4 |
| 2007 | 3 | 9 |
| 2008 | 3 | 7 |
| 2009 | 1 | 5 |
| 2010 | 7 | 7 |
| 2011 | 9 | 19 |
| 2012 | 5 | 5 |
| 2013 | 5 | 18 |
| 2014 | 9 | 20 |
| 2015 | 8 | 17 |
| 2016 | 17 | 29 |
| 2017 | 18 | 27 |
| 2018 | 21 | 14 |
| 2019 | 19 | 20 |
| 2020 | 14 | 22 |
| 2021 | 6 | 10 |
| 2022 | 10 | 16 |
| 2023 | 10 | 32 |
| 2024 | 9 | 25 |
| 2025 | 9 | 28 |
| 2026 | 20 | 27 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Aromatic polyester and method for producing same6 Oct 2026US 12,753,274 B2Toyobo Co., Ltd.
- Polylactide formulation for improved extrusion processing6 Oct 2026US 12,753,555 B2WestRock MWV, LLC
- Aqueous, low solids basecoat compositions28 Jul 2026US 12,692,411 B2BASF Coatings GmbH
- Biodegradable and/or compostable biobased powders for additive manufacturing, and methods for the use thereof21 Jul 2026US 12,686,787 B2Stratasys, Inc.
- Porous piezoelectric composites and production thereof14 Jul 2026US 12,679,021 B2National Research Council of Canada
- Synthetic wax materials with degradable linkers8 Oct 2026US 2026/0308317 A1Board of Trustees of Michigan State University
- Thermoplastic collagen compositions comprising polyesters8 Oct 2026US 2026/0308379 A1
- Biodegradable polymer dispersion and method for producing same1 Oct 2026US 2026/0297335 A1Cj Cheiljedang Corporation
- Biopolymer containments with coatings24 Sep 2026US 2026/0285556 A1Double Double D, LLC
- Composite material for three-dimensional (3d) printing, 3d printing method, and 3d printed part24 Sep 2026US 2026/0286172 A1Jf Polymers (Su Zhou) Co. Ltd.
Most cited
By later US patents
- End use applications of biodegradable polymers1,525US 5,444,113 AEcopol, LLC · 1995
- Blends of polyactic acid312US 5,216,050 ABioPak Technology, Ltd. · 1993
- Degradable polymer composition271US 5,502,158 AEcopol, LLC · 1996
- Paper having a melt-stable lactide polymer coating and process for manufacture thereof244US 5,475,080 ACargill, Incorporated · 1995
- Degradable polymer composition231US 5,834,582 AChronopol, Inc. · 1998