US3632789A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of coatings from olefin copolymers containing hydroxyl groups and polyisocyanates
Assignee: BASF SE
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Filing: 1968-12-05
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Granted: 1972-01-04
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Expires: 1988-12-05
Abstract
Abstract PROCESS FOR THE PRODUCTION OF COATINGS BASED ON REACTION PRODUCTS OF POLYISOCYANATES WITH COPOLYMERS CONTAINING HYDROXYL GROUPS WHICH HAVE BEEN PREPARED BY POLYMERIZATION OF THE MONOMERS IN AN ORGANIC LIQUID (WHICH DOES NOT REACT WITH ISOCYANATES IN THE PRESENCE OF A SOLUBLE POLYMER) AS THE INSOLUBLE COPOLYMER DISPERSED IN THE ORGANIC LIQUID.
Inventors
- 👤 Hans Wilhelm
- 👤 Heinrich Hartmann
- 👤 Klaus Gulbins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:25
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/30; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/62; C08G18/6216; C08G18/622
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-03 | 1975-07-05 | 1976-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-03 | 1979-07-05 | 1980-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-03 | 1983-07-05 | 1984-01-04 | $7700.00 | Window Closed / Lapsed |