Patent US3535381A successfully refreshed from Google Patents.
US3535381A
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Unsaturated fluoroalkyl amines and process for the preparation thereof
Assignee: Pennwalt Corp
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Filing: 1967-05-22
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Granted: 1970-10-20
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Expires: 1987-05-22
Abstract
No abstract record available.
Inventors
- 👤 Murray Hauptschein
- 👤 Arnold Harold Fainberg
- 👤 Robert Bonner Hager
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:19
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/356; D06M15/3562; C; C08; C08F; C08F20/00; C08F20/02; C08F20/52; C08F20/54; C08F26/00; C08F26/02; C14; C14C; C14C9/00; D06M15/263
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2501509A
Cited
US2808425A
Cited
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 |