Patent US3432441A successfully refreshed from Google Patents.
US3432441A
Expired / Lapsed
US
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Catalysts for the production of fluoroalkenes and fluoroalkapolyenes
Assignee: Phillips Petroleum Co
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Filing: 1965-03-12
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Granted: 1969-03-11
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Expires: 1985-03-12
Abstract
No abstract record available.
Inventors
- 👤 Lloyd E Gardner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:19
CPC Classifications
B; B01; B01J; B01J21/00; B01J21/20; B01J21/02; B01J21/04; C; C07; C07C; C07C17/00; C07C17/07; C07C17/08; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/584
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1944161A
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US2246900A
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US2336165A
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US2381562A
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US2428741A
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US2568964A
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US2651599A
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US2739132A
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BE629834A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-10 | 1972-09-09 | 1973-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-10 | 1976-09-09 | 1977-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-10 | 1980-09-09 | 1981-03-11 | $7700.00 | Window Closed / Lapsed |