Process for preparing diisocyanates based on lysine
US-11739055-B2 · Aug 29, 2023 · US
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from or via ureas
from or via ureas · 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 | C07C263/06 |
| Official title | from or via ureas |
| Display label | from or via ureas |
| Total patents | 8 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2016 | 2 |
| 2017 | 2 |
| 2018 | 2 |
| 2021 | 1 |
| 2023 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Process for preparing diisocyanates based on lysine
US-2021403417-A1 · Dec 30, 2021 · US
Reaction method accompanied by production of gas component
US-10118110-B2 · Nov 6, 2018 · US
Carbodiimides, method for the production and use thereof
US-10065925-B2 · Sep 4, 2018 · US
Novel carbodiimides, method for the production and use thereof
US-2017334839-A1 · Nov 23, 2017 · US
Method for producing meta-xylylenediisocyanates
US-9670148-B2 · Jun 6, 2017 · US
Reaction Method Accompanied by Production of Gas Component
US-2016166950-A1 · Jun 16, 2016 · US
Method for producing meta-xylylenediisocyanates
US-2016145201-A1 · May 26, 2016 · US