Method for isocyanate and polyurethane production with improved sustainability
US-2022389150-A1 · Dec 8, 2022 · US
Phosgene
Phosgene · 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 | C01B32/80 |
| Official title | Phosgene |
| Display label | Phosgene |
| Total patents | 84 |
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 | 5 |
| 2016 | 10 |
| 2017 | 16 |
| 2018 | 8 |
| 2019 | 4 |
| 2020 | 5 |
| 2021 | 4 |
| 2022 | 8 |
| 2023 | 6 |
| 2024 | 7 |
| 2025 | 9 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Process and reactor for producing phosgene
US-2022332587-A1 · Oct 20, 2022 · US
Reactor tube assembly
US-2022314182-A1 · Oct 6, 2022 · US
Method for producing halogenated carbonyl
US-2022289579-A1 · Sep 15, 2022 · US
Catalyst for preparing phosgene and preparation method therefor, and method for preparation of phosgene and comprehensive utilization of energy thereof
US-2022266237-A1 · Aug 25, 2022 · US
Method for producing phosgene
US-2022212936-A1 · Jul 7, 2022 · US
Process for conditioning and reusing salt-containing process water
US-2022145006-A1 · May 12, 2022 · US
Method for cleaning phosgene conducting apparatus
US-11213867-B2 · Jan 4, 2022 · US
Process for producing organic compound
US-11161820-B2 · Nov 2, 2021 · US
Process for removal of sulfides from carbon monoxide rich gas stream at ambient temperatures
US-2021300766-A1 · Sep 30, 2021 · US
Production and separation of phosgene by means of a combined co2 and chloride electrolysis
US-2021189572-A1 · Jun 24, 2021 · US
Method for cleaning phosgene-conducting apparatuses
US-11020720-B2 · Jun 1, 2021 · US
Energy-efficient method for providing a purified phosgene vapor
US-10843927-B2 · Nov 24, 2020 · US
Method for cleaning phosgene conducting apparatus
US-2020246845-A1 · Aug 6, 2020 · US
Method for cleaning phosgene-conducting apparatuses
US-2020222871-A1 · Jul 16, 2020 · US
Process for producing organic compound
US-2020207717-A1 · Jul 2, 2020 · US
Energy-efficient method for providing a purified phosgene vapor
US-2020180965-A1 · Jun 11, 2020 · US
Process for safe production of phosgene
US-10486972-B2 · Nov 26, 2019 · US
A Process for Manufacturing Isocyanates and/or Polycarbonates
US-2019241507-A1 · Aug 8, 2019 · US
Microwave chemical processing
US-10332726-B2 · Jun 25, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C01B32/80?
- CPC C01B32/80 is the Cooperative Patent Classification code for “Phosgene.”
- How many patents are filed under CPC C01B32/80 (Phosgene)?
- Our database includes 84 publications tagged with this CPC code.
- Is patent activity under CPC C01B32/80 growing?
- Publication counts under this code: 7 in 2024 vs 9 in 2025 (latest complete years).