US2917489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for curing liquid urethane polymers
Assignee: EIDP Inc
•
Filing: 1956-03-16
•
Granted: 1959-12-15
•
Expires: 1976-03-16
Abstract
No abstract record available.
Inventors
- 👤 Edward K Gladding
- 👤 Frederic B Stilmar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:45
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/4854; C08G18/08; C08G18/10; C08G18/4825
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
39 words
THE PROCESS OF PREPARING ELASTOMERS HAVING IMPROVED TEAR STRENGTH FROM LIQUID, CURABLE DIISOCYANATE COMPOSITION WHICH COMPRISES FORMING A LIQUID MIXTURE BY MIXING AT A TEMPERATURE OF FROM 50 TO 100* C. (A) A LIQUID ISOCYANATE-TERMINATED POLYMER HGAVING THE FORMULA
Claim 2
Dependent Claim
39 words
THE PROCESS OF PREPARING ELASTOMERS HAVING IMPROVED TEAR STRENGTH FROM LIQUID, CURABLE DIISOCYANATE COMPOSITION WHICH COMPRISES FORMING A LIQUID MIXTURE BY MIXING AT A TEMPERATURE OF FROM 50 TO 100* C. (A) A LIQUID ISOCYANATE-TERMINATED POLYMER HGAVING THE FORMULA
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) | 1962-12-14 | 1963-06-15 | 1963-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-14 | 1967-06-15 | 1967-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-14 | 1971-06-15 | 1971-12-15 | $7700.00 | Window Closed / Lapsed |