Patent US3442832A successfully refreshed from Google Patents.
US3442832A
Expired / Lapsed
US
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Reinforced rubber by coprecipitation with starch xanthane or pregelatinized starch
Assignee: United States Department of Agriculture
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Filing: 1966-09-19
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Granted: 1969-05-06
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Expires: 1986-09-19
Abstract
No abstract record available.
Inventors
- 👤 Russell A Buchanan
- 👤 Charles R Russell
- 👤 Orville E Weislogel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:32
CPC Classifications
C; C08; C08L; C08L21/00; C08L21/02; C08L7/00; C08L7/02; C08L9/00; C08L9/06; C08L9/08; C08L3/00; C08L3/02; C08L97/00; C08L97/005
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) | 1972-05-05 | 1972-11-04 | 1973-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-05 | 1976-11-04 | 1977-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-05 | 1980-11-04 | 1981-05-06 | $7700.00 | Window Closed / Lapsed |