Isophorone diisocyanate composition and blocked product thereof
US-2026092032-A1 · Apr 2, 2026 · US
Separation; Purification; Stabilisation; Use of additives
Separation; Purification; Stabilisation; Use of additives · 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 | C07C263/18 |
| Official title | Separation; Purification; Stabilisation; Use of additives |
| Display label | Separation; Purification; Stabilisation; Use of additives |
| Total patents | 41 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 2 |
| 2017 | 3 |
| 2018 | 6 |
| 2019 | 4 |
| 2020 | 8 |
| 2021 | 4 |
| 2022 | 1 |
| 2023 | 3 |
| 2024 | 3 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for treating residue from the production of organic isocyanates
US-2026062379-A1 · Mar 5, 2026 · US
A diisocyanate stabilizer, use thereof, and diisocyanate composition
US-2024217923-A1 · Jul 4, 2024 · US
Composition comprising heterocyclic compound and 4,4'-methylene diphenyl diisocyanate
US-2024174601-A1 · May 30, 2024 · US
A method for stably storing an isocyanate composition
US-2024124680-A1 · Apr 18, 2024 · US
Isocyanate composition with improved stability and reactivity, and optical lens using same
US-11673992-B2 · Jun 13, 2023 · US
Xylylene diisocyanate-containing container, method for storing xylylene diisocyanate, and method for transporting xylylene diisocyanate
US-2023166883-A1 · Jun 1, 2023 · US
Xylylene diisocyanate composition and optical polymerizable composition including the same
US-2023087212-A1 · Mar 23, 2023 · US
Method for producing carbodiimides
US-11447447-B2 · Sep 20, 2022 · US
Isocyanate composition, method for producing isocyanate composition, and method for producing isocyanate polymer
US-11118001-B2 · Sep 14, 2021 · US
Light colored modified isocyanate mixture and preparation method thereof
US-11034651-B2 · Jun 15, 2021 · US
Isocyanate composition with improved stability and reactivity, and optical lens using same
US-2021163669-A1 · Jun 3, 2021 · US
Method for preparing aliphatic isocyanate
US-10975021-B2 · Apr 13, 2021 · US
Method for producing carbodiimides
US-2020331849-A1 · Oct 22, 2020 · US
A Light Colored Modified Isocyanate Mixture And Preparation Method Thereof
US-2020283375-A1 · Sep 10, 2020 · US
Xylylene diisocyanate composition with improved stability and reactivity and optical lens using the same
US-10723696-B2 · Jul 28, 2020 · US
Method for preparing aliphatic isocyanate
US-2020190022-A1 · Jun 18, 2020 · US
Method for preparing aliphatic isocyanate
US-10654796-B2 · May 19, 2020 · US
Process for preparing liquid, storage-stable organic isocyanates having carbodiimide and/or uretonimine groups and having low colour number
US-10633330-B2 · Apr 28, 2020 · US
Method for preparing aliphatic isocyanate
US-2020102268-A1 · Apr 2, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07C263/18?
- CPC C07C263/18 is the Cooperative Patent Classification code for “Separation; Purification; Stabilisation; Use of additives.”
- How many patents are filed under CPC C07C263/18 (Separation; Purification; Stabilisation; Use of additives)?
- Our database includes 41 publications tagged with this CPC code.
- Is patent activity under CPC C07C263/18 growing?
- Publication counts under this code: 3 in 2023 vs 3 in 2024 (latest complete years).