US3379656A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Urethanepolymer compositions
Assignee: Dow Chemical Co
•
Filing: 1960-05-31
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Granted: 1968-04-23
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Expires: 1980-05-31
Abstract
No abstract record available.
Inventors
- 👤 Eichhorn Jacob
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:16
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0095; C08K; C08K13/00; C08K13/02; C08K3/00; C08K3/01; C08K3/016; C08K3/16; C08K5/00; C08K5/02; C08K5/49; C08K5/51; C08K5/52; C08K5/521; C08J2375/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2577281A
Cited
US2600455A
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US2658877A
Cited
GB810551A
Cited
US2713536A
Cited
US2956032A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-23 | 1971-10-23 | 1972-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-23 | 1975-10-23 | 1976-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-23 | 1979-10-23 | 1980-04-23 | $7700.00 | Window Closed / Lapsed |