L-DOPA and/or DOPA decarboxylse inhibitors conjugated to sugar for the treatment of dopamine-responsive disorders
US-12533417-B2 · Jan 27, 2026 · US
Preparation of hydrazines
Preparation of hydrazines · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C07C241/02 |
| Official title | Preparation of hydrazines |
| Display label | Preparation of hydrazines |
| Total patents | 28 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 2 |
| 2017 | 3 |
| 2018 | 1 |
| 2019 | 1 |
| 2020 | 3 |
| 2021 | 2 |
| 2022 | 1 |
| 2023 | 2 |
| 2024 | 5 |
| 2025 | 1 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Selective monoarylations of hydrazines
US-2026008747-A1 · Jan 8, 2026 · US
Process for preparing modulators of eukaryotic initiation factor 2b
US-2025376432-A1 · Dec 11, 2025 · US
Heterobidentate imidazo[1,5-a]pyridine and imidazo[1,5-a]quinoline n-heterocyclic carbene (nhc) ligands, catalyst complexes thereof, and methods using same
US-2024383894-A1 · Nov 21, 2024 · US
3,3'-(hydrazine-1,2-diyl)bis(1-(naphthalen-2-yloxy)propan-2-ol) as an ecofriendly insecticidal agent against spodoptera littoralis (boisd.)
US-12116333-B1 · Oct 15, 2024 · US
3,3′-(hydrazine-1,2-diyl)bis(1-(naphthalen-2-yloxy)propan-2-ol) as an ecofriendly insecticidal agent against Spodoptera littoralis (Boisd.)
US-11993554-B1 · May 28, 2024 · US
3,3′-(hydrazine-1,2-diyl)bis(1-(naphthalen-2-yloxy)propan-2-ol) as an ecofriendly insecticidal agent against Spodoptera littoralis (boisd.)
US-11891353-B1 · Feb 6, 2024 · US
Process For The Preparation Of Prothioconazole And Intermediates Thereof
US-2024025865-A1 · Jan 25, 2024 · US
Method for preparing azo compound
US-2023192599-A1 · Jun 22, 2023 · US
Organic amine salt foamer
US-11634552-B2 · Apr 25, 2023 · US
L-dopa and/or dopa decarboxylse inhibitors conjugated to sugar for the treatment of dopamine-responsive disorders
US-2022016253-A1 · Jan 20, 2022 · US
Manufacture of hydrazinyl compounds useful in the manufacture of pyrazole carboxylic acid and derivatives, hydrazinyl compounds and their use
US-2021371386-A1 · Dec 2, 2021 · US
Composition, method and use
US-11015137-B2 · May 25, 2021 · US
Organic Amine Salt Foamer
US-2020291199-A1 · Sep 17, 2020 · US
Crystalline diacylhydrazine and the use thereof
US-2020048188-A1 · Feb 13, 2020 · US
Composition, method and use
US-2020040270-A1 · Feb 6, 2020 · US
Crystalline diacylhydrazine and the use thereof
US-10501405-B2 · Dec 10, 2019 · US
Process for making 2,5-dihalogenated phenol
US-9988333-B2 · Jun 5, 2018 · US
Process for Making 2,5-Dihalogenated Phenol
US-2017174603-A1 · Jun 22, 2017 · US
Crystalline Diacylhydrazine and the Use Thereof
US-2017107175-A1 · Apr 20, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07C241/02?
- CPC C07C241/02 is the Cooperative Patent Classification code for “Preparation of hydrazines.”
- How many patents are filed under CPC C07C241/02 (Preparation of hydrazines)?
- Our database includes 28 publications tagged with this CPC code.
- Is patent activity under CPC C07C241/02 growing?
- Publication counts under this code: 5 in 2024 vs 1 in 2025 (latest complete years).