C25B 3/09
Nitrogen containing compounds
C25B3/09 (Nitrogen containing compounds) appears on 352 US grants and 240 published applications in this corpus.
Search patents in C25B- Granted patents
- 352
- Published applications
- 240
- Assignees
- 249
- Inventors
- 974
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 14 | 0 |
| 1978 | 9 | 0 |
| 1979 | 6 | 0 |
| 1980 | 9 | 0 |
| 1981 | 11 | 0 |
| 1982 | 2 | 0 |
| 1983 | 9 | 0 |
| 1984 | 15 | 0 |
| 1985 | 12 | 0 |
| 1986 | 25 | 0 |
| 1987 | 14 | 0 |
| 1988 | 11 | 0 |
| 1989 | 6 | 0 |
| 1990 | 10 | 0 |
| 1991 | 9 | 0 |
| 1992 | 12 | 0 |
| 1993 | 6 | 0 |
| 1994 | 5 | 0 |
| 1995 | 4 | 0 |
| 1996 | 7 | 0 |
| 1997 | 5 | 0 |
| 1998 | 1 | 0 |
| 1999 | 6 | 0 |
| 2000 | 3 | 0 |
| 2001 | 3 | 2 |
| 2002 | 3 | 4 |
| 2003 | 3 | 4 |
| 2004 | 4 | 4 |
| 2005 | 1 | 6 |
| 2006 | 1 | 4 |
| 2007 | 1 | 4 |
| 2008 | 2 | 5 |
| 2009 | 0 | 5 |
| 2010 | 5 | 1 |
| 2011 | 3 | 7 |
| 2012 | 2 | 9 |
| 2013 | 3 | 8 |
| 2014 | 8 | 3 |
| 2015 | 8 | 9 |
| 2016 | 5 | 15 |
| 2017 | 3 | 9 |
| 2018 | 9 | 7 |
| 2019 | 13 | 11 |
| 2020 | 6 | 13 |
| 2021 | 7 | 12 |
| 2022 | 8 | 12 |
| 2023 | 11 | 19 |
| 2024 | 11 | 24 |
| 2025 | 10 | 22 |
| 2026 | 5 | 21 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for electrochemical synchronous synthesis of urea and struvite using nitrogen and phosphorus pollutants and waste gas field8 Sep 2026US 12,729,447 B2Nanchang University
- Device for producing azo compound16 Jun 2026US 12,655,528 B2Dongjin Innochem Co., Ltd.
- Conducting polymer microcontainers for organic bioelectronics and drug delivery10 Feb 2026US 12,545,793 B2University of Houston System
- Electrochemical reactor3 Feb 2026US 12,540,409 B2RedElec Technologie SA
- Electrically fueled active supramolecular materials, and applications thereof6 Jan 2026US 12,516,425 B2The Regents of the University of California
- 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.
- Electrolytic cell27 Aug 2026US 2026/0250861 A1Tokuyama Corporation
- Method for electrochemically synthesizing alkylene carbonate13 Aug 2026US 2026/0234120 A1Seoul National University R&Db Foundation
- Tubular penetration electrode-based flow cell reaction system and operation method6 Aug 2026US 2026/0226633 A1Southeast University
Most cited
By later US patents
- Electrochemical hydrogenation of nicotinamide adenine dinucleotide401US 4,526,661 ABASF SE · 1985
- Gas fixation solar cell using gas diffusion semiconductor electrode151US 4,240,882 AInstitute of Gas Technology · 1980
- Electrode for the electrochemical regeneration of coenzyme, a method of making said electrode, and the use thereof111US 4,490,464 A1984
- Method for preparing organic and inorganic hydroxides and alkoxides by electrolysis71US 5,286,354 ASachem, Inc. · 1994
- Electrolytic pyrite removal from kerogen materials49US 4,043,885 AUniversity of Southern California · 1977