US3483150A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurethane prepolymers and elastomers
Assignee: JOHN W HAYES
•
Filing: 1967-02-15
•
Granted: 1969-12-09
•
Expires: 1987-02-15
Abstract
No abstract record available.
Inventors
- 👤 Arthur Ehrlich
- 👤 John W Hayes
- 👤 Temple C Patton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:54
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/721; C08G18/08; C08G18/10; C08G18/12; C08G18/28; C08G18/30; C08G18/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3201136A
Cited
US3380967A
Cited
US3391101A
Cited
US3341463A
Cited
US3345311A
Cited
US3362921A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-08 | 1973-06-09 | 1973-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-08 | 1977-06-09 | 1977-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-08 | 1981-06-09 | 1981-12-09 | $7700.00 | Window Closed / Lapsed |