Synthesis of nirogacestat
US-2025361212-A1 · Nov 27, 2025 · US
Two oxygen atoms
Two oxygen atoms · 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 | C07D263/44 |
| Official title | Two oxygen atoms |
| Display label | Two oxygen atoms |
| Total patents | 34 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 7 |
| 2016 | 4 |
| 2018 | 1 |
| 2019 | 2 |
| 2020 | 1 |
| 2021 | 3 |
| 2022 | 2 |
| 2023 | 6 |
| 2024 | 4 |
| 2025 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for preparation of n-carboxyanhydrides
US-12435048-B2 · Oct 7, 2025 · US
Synthesis of nirogacestat
US-12247012-B2 · Mar 11, 2025 · US
Synthesis of nirogacestat
US-12234210-B2 · Feb 25, 2025 · US
Synthesis of nirogacestat
US-12110277-B2 · Oct 8, 2024 · US
Oxazolidinedione-terminated prepolymer
US-12065530-B2 · Aug 20, 2024 · US
Novel method for synthesizing nca compounds
US-2024109875-A1 · Apr 4, 2024 · US
Process for preparing carboxyl cyclic acid anhydride
US-2024092830-A1 · Mar 21, 2024 · US
Method for producing carbonyl halide
US-2023373898-A1 · Nov 23, 2023 · US
Aniline acid anhydride, preparation method therefor, and polyamino acid-grafted chain
US-2023357171-A1 · Nov 9, 2023 · US
Method for producing carbonyl halide
US-2023348279-A1 · Nov 2, 2023 · US
Synthesis of nirogacestat
US-2023312480-A1 · Oct 5, 2023 · US
Synthesis of nirogacestat
US-2023089434-A1 · Mar 23, 2023 · US
Synthesis of nirogacestat
US-2023091415-A1 · Mar 23, 2023 · US
Method of producing carbonyl compound and flow type reaction system of producing carbonyl compound
US-2022144760-A1 · May 12, 2022 · US
Method of producing carbonyl compound and flow type reaction system of producing carbonyl compound
US-2022135517-A1 · May 5, 2022 · US
Oxazolidinedione-terminated prepolymer
US-2021324132-A1 · Oct 21, 2021 · US
Method for preparation of n-carboxyanhydrides
US-2021253543-A1 · Aug 19, 2021 · US
Method for purifying an amino acid-n-carboxy anhydride
US-10975042-B2 · Apr 13, 2021 · US
Process for producing organic compound
US-10781193-B2 · Sep 22, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07D263/44?
- CPC C07D263/44 is the Cooperative Patent Classification code for “Two oxygen atoms.”
- How many patents are filed under CPC C07D263/44 (Two oxygen atoms)?
- Our database includes 34 publications tagged with this CPC code.
- Is patent activity under CPC C07D263/44 growing?
- Publication counts under this code: 4 in 2024 vs 4 in 2025 (latest complete years).