C08G 65/405
In ring structure
Official title: {in ring structure, e.g. phenolphtalein}
C08G65/405 (In ring structure) appears on 23 US grants and 21 published applications in this corpus.
Search patents in C08G- Granted patents
- 23
- Published applications
- 21
- Assignees
- 21
- Inventors
- 87
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 4 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 2 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 3 |
| 2015 | 0 | 0 |
| 2016 | 1 | 1 |
| 2017 | 1 | 2 |
| 2018 | 0 | 1 |
| 2019 | 1 | 2 |
| 2020 | 2 | 0 |
| 2021 | 0 | 2 |
| 2022 | 1 | 2 |
| 2023 | 0 | 0 |
| 2024 | 2 | 3 |
| 2025 | 0 | 0 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Block copolymer, production method therefor, polymeric electrolyte material, polymeric electrolyte molded article, polymeric electrolyte film, electrolyte film equipped with catalyst layer, membrane electrode composite, solid polymer fuel cell, and water electrolysis type hydrogen generating device25 Aug 2026US 12,715,962 B2Toray Industries, Inc.
- Process for synthesising semi-aromatic polyethers24 Sep 2024US 12,098,244 B2Roquette Freres
- Polymer, composition, molded article, cured product and laminate23 Jul 2024US 12,043,702 B2Jsr Corporation
- Polymer, composition, molded article, cured product and laminate22 Nov 2022US 11,505,651 B2Jsr Corporation
- Polymer compositions based on a bio-sourced polyarylene ether ketone21 Jul 2020US 10,717,815 B2Solvay Specialty Polymers USA, LLC
- Insulated wire and preparation method thereof, coil and electronic/electrical device11 Jun 2026US 2026/0162846 A1Well Ascent Electronic (Ganzhou) Co., Ltd.
- Block copolymer, production method therefor, polymeric electrolyte material, polymeric electrolyte molded article, polymeric electrolyte film,electrolyte film equipped with catalyst layer, membrane electrode composite, solid polymer fuel cell, and water electrolysis type hydrogen generating device6 Jun 2024US 2024/0182638 A1Toray Industries, Inc.
- Polyelectrolyte molded body, and polyelectrolyte membrane, electrolyte membrane with catalyst layer, membrane electrode assembly, solid polymer-type fuel cell, and water electrolysis-style hydrogen production device in which said polyelectrolyte molded body is used6 Jun 2024US 2024/0182639 A1Toray Industries, Inc.
- Polymer electrolyte membrane, block copolymer, polymer electrolyte material, polymer electrolyte molded body, electrolyte membrane with catalyst layer, membrane electrode composite, solid polymer fuel cell, and water electrolytic hydrogen generator30 May 2024US 2024/0178424 A1Toray Industries, Inc.
- Polymer, composition, molded article, cured product and laminate28 Jul 2022US 2022/0235179 A1Jsr Corporation
Most cited
By later US patents
- Slurry preparation of bis (halophthalimides) and of polyether polymers40US 6,235,866 B1General Electric Company · 2001
- Compounds having oxadiazole and triazene moieties, crosslinkable polymers therefrom, and methods therefor18US 5,235,044 ARaychem Corporation · 1993
- Bis(2-hydroxyethyl isosorbide); preparation, polymers derived therefrom, and enduses thereby13US 6,608,167 B1E. I. Du Pont de Nemours and Company · 2003
- Polymers derived from phenolphthaleins8US 5,254,663 A1993
- Polymers derived from phenolphthaleins6US 5,237,062 A1993