C08G 69/30
Solid state polycondensation
C08G69/30 (Solid state polycondensation) appears on 75 US grants and 87 published applications in this corpus.
Search patents in C08G- Granted patents
- 75
- Published applications
- 87
- Assignees
- 39
- Inventors
- 219
- Latest grant
- 28 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 2 | 1 |
| 2005 | 1 | 3 |
| 2006 | 0 | 0 |
| 2007 | 1 | 1 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 1 | 3 |
| 2011 | 1 | 3 |
| 2012 | 1 | 2 |
| 2013 | 2 | 5 |
| 2014 | 2 | 2 |
| 2015 | 5 | 7 |
| 2016 | 6 | 18 |
| 2017 | 14 | 9 |
| 2018 | 4 | 6 |
| 2019 | 2 | 2 |
| 2020 | 6 | 6 |
| 2021 | 1 | 3 |
| 2022 | 3 | 6 |
| 2023 | 2 | 5 |
| 2024 | 3 | 1 |
| 2025 | 1 | 1 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- High molecular weight polyamides and CoPolyamides with uniform RV and low gel content28 Apr 2026US 12,612,491 B2Ascend Performance Materials Operations LLC
- Method for the continuous preparation of polyamide prepolymers24 Mar 2026US 12,583,969 B2Arkema France
- Process for the preparation of polyamides11 Mar 2025US 12,247,102 B2Inv Nylon Polymers Americas, LLC
- Polyamide composition and molded product composed of said polyamide composition30 Apr 2024US 11,970,612 B2Kuraray Co., Ltd.
- Method for synthesizing long carbon chain semi-aromatic nylon20 Feb 2024US 11,905,370 B2Zhengzhou University
- Method for producing polyamide resin and resin composition11 Jun 2026US 2026/0159647 A1Mitsubishi Gas Chemical Company, Inc.
- High Molecular Weight Polyamides and CoPolyamides with Uniform RV and Low Gel Content3 Jul 2025US 2025/0215154 A1Ascend Performance Materials Operations LLC
- Method for the continuous preparation of polyamide prepolymers11 Jan 2024US 2024/0010793 A1Arkema France
- New polyamide-containing powders for powder bed fusion printing process and printed articles thereof23 Nov 2023US 2023/0374215 A1BASF SE
- High Molecular Weight Polyamides and CoPolyamides with Uniform RV and Low Gel Content10 Aug 2023US 2023/0250232 A1Ascend Performance Materials Operations LLC
Most cited
By later US patents
- Process for preparing polyamides44US 6,069,228 AE. I. Du Pont de Nemours and Company · 2000
- Method for solid phase polymerization23US 5,955,569 AE. I. Du Pont de Nemours and Company · 1999
- Solid phase-polymerized polyamide polymer22US 6,303,741 B1Mitsubishi Gas Chemical Company, Inc. · 2001
- Controlling the crystallization of polyesters by means of their water content20US 7,193,032 B2Buhler AG · 2007
- Method for drying polyamide and method for solid-phase polymerization of polyamide15US 5,576,415 AMitsubishi Gas Chemical Company, Inc. · 1996