Patent US3488389A successfully refreshed from Google Patents.
US3488389A
Expired / Lapsed
US
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Perfluoroimides
Assignee: Ashland LLC
•
Filing: 1965-09-07
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Granted: 1970-01-06
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Expires: 1985-09-07
Abstract
No abstract record available.
Inventors
- 👤 William J Mckillip
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:30
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/22; C07D295/28; C07D295/32; C07C; C07C243/00; C07C243/40; C07C263/00; C07C263/12; C07C265/00; C07C265/02; C07C265/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-05 | 1973-07-07 | 1974-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-05 | 1977-07-07 | 1978-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-05 | 1981-07-07 | 1982-01-06 | $7700.00 | Window Closed / Lapsed |