C08G 63/90
Purification
Official title: Purification; Drying
C08G63/90 (Purification) appears on 220 US grants and 214 published applications in this corpus.
Search patents in C08G- Granted patents
- 220
- Published applications
- 214
- Assignees
- 165
- Inventors
- 626
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 4 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 3 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 5 | 0 |
| 1995 | 8 | 0 |
| 1996 | 8 | 0 |
| 1997 | 9 | 0 |
| 1998 | 10 | 0 |
| 1999 | 4 | 0 |
| 2000 | 9 | 0 |
| 2001 | 3 | 1 |
| 2002 | 8 | 5 |
| 2003 | 3 | 1 |
| 2004 | 2 | 4 |
| 2005 | 1 | 9 |
| 2006 | 5 | 9 |
| 2007 | 3 | 6 |
| 2008 | 3 | 9 |
| 2009 | 3 | 6 |
| 2010 | 3 | 7 |
| 2011 | 8 | 17 |
| 2012 | 5 | 5 |
| 2013 | 5 | 7 |
| 2014 | 7 | 6 |
| 2015 | 7 | 10 |
| 2016 | 9 | 14 |
| 2017 | 11 | 11 |
| 2018 | 8 | 8 |
| 2019 | 7 | 12 |
| 2020 | 4 | 10 |
| 2021 | 11 | 12 |
| 2022 | 10 | 12 |
| 2023 | 8 | 8 |
| 2024 | 6 | 10 |
| 2025 | 4 | 10 |
| 2026 | 2 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Piezoelectric polylactic acid material and preparation method and application thereof22 Sep 2026US 12,742,038 B2Ningbo Michi Technology Co., Ltd.
- Amphiphilic block copolymer, preparation method thereof and nanomicelle drug-loading system27 Jan 2026US 12,534,571 B2Shanghai Best-Link Bioscience
- Method for preparing a (co)polyester26 Aug 2025US 12,398,265 B2BASF SE
- Process for purifying an aliphatic-aromatic polyester29 Jul 2025US 12,371,529 B2BASF SE
- Crystalline polyester resin and manufacturing method thereof8 Jul 2025US 12,351,679 B2SK Chemicals Co., Ltd.
- Procedure for the purification of biodegradable thermoplastic polymeric particles for medical and/or pharmaceutical use25 Jun 2026US 2026/0176427 A1Laboratorios Farmaceuticos Rovi, S.A.
- Polylactic acid resin with improved meltability and reactivity, and method for preparing the same21 May 2026US 2026/0139094 A1LG Chem.Ltd.
- Method for producing polyhydroxyalkanoate and use thereof23 Apr 2026US 2026/0109812 A1Kaneka Corporation
- Method for preparing a purified cyclic compound composition16 Apr 2026US 2026/0103472 A1Sulzer Management AG
- Method for preparing purified polyhydroxyalkanoate8 Jan 2026US 2026/0009055 A1Cj Cheiljedang Corporation
Most cited
By later US patents
- Paper having a melt-stable lactide polymer coating and process for manufacture thereof244US 5,475,080 ACargill, Incorporated · 1995
- Melt-stable amorphous lactide polymer film and process for manufacturing thereof217US 5,484,881 ACargill, Incorporated · 1996
- Melt-stable semi-crystalline lactide polymer film and process for manufacture thereof191US 5,536,807 ACargill, Incorporated · 1996
- Melt-stable lactide polymer composition and process for manufacture thereof100US 5,338,822 ACargill, Incorporated · 1994
- Melt-stable lactide polymer nonwoven fabric and process for manufacture thereof90US 5,525,706 ACargill, Incorporated · 1996