Patent US3535307A successfully refreshed from Google Patents.
US3535307A
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US
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High molecular weight polyether blocked polymers
Assignee: Dow Chemical Co
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Filing: 1967-09-27
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Granted: 1970-10-20
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Expires: 1987-09-27
Abstract
No abstract record available.
Inventors
- 👤 Philip H Moss
- 👤 Michael Cuscurida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:14
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/4866; C08G18/4804; C08G18/4833; C08G18/4837; C08G18/4841; C08G65/00; C08G65/02; C08G65/26; Y; Y10; Y10S; Y10S521/00; Y10S521/914
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2996551A
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US2944979A
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US2944981A
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US2945025A
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US3042666A
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US3048548A
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US3277076A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-19 | 1974-04-20 | 1974-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-19 | 1978-04-20 | 1978-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-19 | 1982-04-20 | 1982-10-20 | $7700.00 | Window Closed / Lapsed |