US3457203A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrophilic polyurethane foams and a process for preparing them
Assignee: Olin Corp
•
Filing: 1966-04-25
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Granted: 1969-07-22
•
Expires: 1986-04-25
Abstract
No abstract record available.
Inventors
- 👤 Stanley I Cohen
- 👤 John E Puig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:57
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/4833; C08G18/4837; C08G18/2805; C08G18/2815; C08G18/283; C08G18/4845; C08G2110/00; C08G2110/0008; C08G2110/0083; Y; Y10; Y10S; Y10S521/00; Y10S521/905; Y10S528/00; Y10S528/904
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-21 | 1973-01-20 | 1973-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-21 | 1977-01-20 | 1977-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-21 | 1981-01-20 | 1981-07-22 | $7700.00 | Window Closed / Lapsed |