Photochemical process for producing (4R,4S)-4-(4-cyano-2-methoxyphenyl)-5-ethoxy-2,8-dimethyl-1,4-dihydro-1,6-naphthyridin-3-carboxamide
US-12398144-B2 · Aug 26, 2025 · US
Racemisation; Complete or partial inversion
Racemisation; Complete or partial inversion · 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 | C07B55/00 |
| Official title | Racemisation; Complete or partial inversion |
| Display label | Racemisation; Complete or partial inversion |
| Total patents | 33 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 1 |
| 2017 | 6 |
| 2018 | 8 |
| 2019 | 1 |
| 2020 | 2 |
| 2021 | 1 |
| 2022 | 2 |
| 2023 | 3 |
| 2024 | 2 |
| 2025 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Processes and intermediates for preparing a Btk inhibitor
US-12358917-B2 · Jul 15, 2025 · US
Improved synthetic methods for making lactones
US-2025214955-A1 · Jul 3, 2025 · US
Process for racemizing and isolating atropisomers of 7-chloro-6-fluoro-1-(2-isopropyl-4-methylpyridin-3-yl)pyrido[2,3-d]pyrimidine-2,4(1h,3h)-dione
US-2025122197-A1 · Apr 17, 2025 · US
Method for racemisation of (5R)-4-[5-(3,5-dichlorophenyl)-5-(trifluoromethyl)-4H¬isoxazol-3-yl]-2-methyl-benzoic acid
US-12077514-B2 · Sep 3, 2024 · US
Photochemical process for producing (4r,4s)-4-(4-cyano-2-methoxyphenyl)-5-ethoxy-2,8-dimethyl-1,4-dihydro-1,6-naphthyridin-3-carboxamide
US-2024150357-A1 · May 9, 2024 · US
Process for racemizing and isolating atropisomers of 7-chloro-6-fluoro-1-(2-isopropyl-4-methylpyridin-3-yl)pyrido[2,3-d]pyrimidine-2,4(1h,3h)-dione
US-2023391771-A1 · Dec 7, 2023 · US
Processes and intermediates for preparing a btk inhibitor
US-2023107573-A1 · Apr 6, 2023 · US
Synthesis of tipifarnib
US-11542244-B2 · Jan 3, 2023 · US
Process for preparation of optically pure and optionally substituted 2-(1-hydroxy-alkyl)-chromen-4-one derivatives and their use in preparing pharmaceuticals
US-11478481-B2 · Oct 25, 2022 · US
Method for Racemisation of (5R)-4-[5-(3,5-dichlorophenyl)-5-(trifluoromethyl)-4H¬isoxazol-3-yl]-2-Methyl-Benzoic Acid
US-2022041564-A1 · Feb 10, 2022 · US
Synthesis of tipifarnib
US-2021246114-A1 · Aug 12, 2021 · US
Atropisomers and methods of altering enantiomeric excess
US-10584077-B2 · Mar 10, 2020 · US
Processes and intermediates for preparing a btk inhibitor
US-2020039981-A1 · Feb 6, 2020 · US
Process for preparation of optically pure and optionally substituted 2-(1-hydroxy-alkyl)-chromen-4-one derivatives and their use in preparing pharmaceuticals
US-2019038634-A1 · Feb 7, 2019 · US
Method for the production of praziquantel
US-10160758-B2 · Dec 25, 2018 · US
Preparation of pantolactone
US-10150746-B2 · Dec 11, 2018 · US
Process for preparation of optically pure and optionally substituted 2-(1-hydroxy-alkyl)-chromen-4-one derivatives and their use in preparing pharmaceuticals
US-10130635-B2 · Nov 20, 2018 · US
Atropisomers and Methods of Altering Enantiomeric Excess
US-2018179120-A1 · Jun 28, 2018 · US
Method for the production of praziquantel
US-2018155339-A1 · Jun 7, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07B55/00?
- CPC C07B55/00 is the Cooperative Patent Classification code for “Racemisation; Complete or partial inversion.”
- How many patents are filed under CPC C07B55/00 (Racemisation; Complete or partial inversion)?
- Our database includes 33 publications tagged with this CPC code.
- Is patent activity under CPC C07B55/00 growing?
- Publication counts under this code: 2 in 2024 vs 4 in 2025 (latest complete years).