US3461086A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyether urethane foams from certain heteric polyethers
Assignee: Dow Chemical Co
•
Filing: 1964-03-05
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Granted: 1969-08-12
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Expires: 1984-03-05
Abstract
No abstract record available.
Inventors
- 👤 Riley F Mogford
- 👤 Carl C Thurman Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:58
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/4833; C08G18/4837; C08G18/4804; C08G18/4845; C08G18/485; C08G2110/00; C08G2110/0008; C08G2110/0041; C08G2110/005; C08G2110/0083; Y; Y10; Y10S; Y10S521/00; Y10S521/914
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA538842A
Cited
GB757309A
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US3072582A
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US3097176A
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US3153002A
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US3087900A
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US3134742A
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FR1309892A
Cited
GB967441A
Cited
US3380967A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-11 | 1973-02-10 | 1973-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-11 | 1977-02-10 | 1977-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-11 | 1981-02-10 | 1981-08-12 | $7700.00 | Window Closed / Lapsed |