C25B 3/05
Heterocyclic compounds
C25B3/05 (Heterocyclic compounds) appears on 174 US grants and 136 published applications in this corpus.
Search patents in C25B- Granted patents
- 174
- Published applications
- 136
- Assignees
- 134
- Inventors
- 494
- Latest grant
- 3 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 4 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 4 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 4 | 0 |
| 1984 | 10 | 0 |
| 1985 | 3 | 0 |
| 1986 | 13 | 0 |
| 1987 | 7 | 0 |
| 1988 | 4 | 0 |
| 1989 | 1 | 0 |
| 1990 | 4 | 0 |
| 1991 | 4 | 0 |
| 1992 | 7 | 0 |
| 1993 | 3 | 0 |
| 1994 | 4 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 5 | 0 |
| 2000 | 3 | 0 |
| 2001 | 3 | 1 |
| 2002 | 4 | 1 |
| 2003 | 1 | 2 |
| 2004 | 2 | 1 |
| 2005 | 0 | 1 |
| 2006 | 1 | 3 |
| 2007 | 0 | 1 |
| 2008 | 0 | 1 |
| 2009 | 0 | 1 |
| 2010 | 2 | 0 |
| 2011 | 1 | 2 |
| 2012 | 0 | 2 |
| 2013 | 3 | 6 |
| 2014 | 3 | 4 |
| 2015 | 2 | 7 |
| 2016 | 3 | 11 |
| 2017 | 3 | 2 |
| 2018 | 6 | 9 |
| 2019 | 8 | 7 |
| 2020 | 3 | 7 |
| 2021 | 7 | 10 |
| 2022 | 8 | 9 |
| 2023 | 4 | 11 |
| 2024 | 5 | 12 |
| 2025 | 8 | 11 |
| 2026 | 3 | 14 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Composite catalyst with Molybdenum Mxene for electrochemical hydrogenation of 2-methylfuran3 Mar 2026US 12,565,708 B2Khalifa University of Science and Technology
- Conducting polymer microcontainers for organic bioelectronics and drug delivery10 Feb 2026US 12,545,793 B2University of Houston System
- Method for preparing gamma-butyrolactone3 Feb 2026US 12,540,407 B2City University of Hong Kong
- Alternating current (AC) transition-metal catalysis19 Aug 2025US 12,392,042 B2Yeda Research and Development Co. Ltd.
- Process for the oxidation of carbon-containing organic compounds with electrochemically generated oxidizing agents and arrangement for carrying out the process22 Jul 2025US 12,366,002 B2Condas, GMBH
- Method and apparatus for producing imidazole-based compounds using carbon dioxide, and catalyst for c-n coupling reaction10 Sep 2026US 2026/0265928 A1Ue Science Inc.
- Process for synthesizing naphthyridine derivatives and intermediates thereof27 Aug 2026US 2026/0250296 A1Amgen Inc.
- Method for electrochemically synthesizing alkylene carbonate13 Aug 2026US 2026/0234120 A1Seoul National University R&Db Foundation
- Sequential one-pot synthesis for preparing 4-(4-cyano-2-methoxyphenyl)-5-ethoxy-2,8-dimethyl-1,4-dihydro-1,6-naphthyridine-3-carboxamide23 Jul 2026US 2026/0209957 A1Bayer Aktiengesellschaft
- Electrochemical transformations16 Jul 2026US 2026/0201574 A1Loughborough University
Most cited
By later US patents
- Electrochemical methods for recovery of ascorbic acid50US 6,004,445 AThe Electrosynthesis Company, Inc. · 1999
- Electrocatalytic process for carbon dioxide conversion26US 10,975,480 B2Dioxide Materials, Inc. · 2021
- Process for separating mixtures of prefluorinated hydrocarbon compounds25US 5,260,496 AKali-Chemie Aktiengesellschaft · 1993
- Electrochemical process for thiocyanating aminobenzene compounds25US 5,573,653 ASandoz Ltd. · 1996
- Method for producing vitamin B.sub.1 and its intermediate20US 4,256,550 A1981