US3485735A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing cf4 and ccif3 in an electrical discharge
Assignee: Allis Chalmers Corp
•
Filing: 1968-08-09
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Granted: 1969-12-23
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Expires: 1988-08-09
Abstract
No abstract record available.
Inventors
- 👤 Jean P Manion
- 👤 John A Philosophos
- 👤 Marquis B Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:28
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/37; B; B01; B01J; B01J19/00; B01J19/08; B01J19/087; B01J19/088
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3081245A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-22 | 1973-06-23 | 1973-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-22 | 1977-06-23 | 1977-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-22 | 1981-06-23 | 1981-12-23 | $7700.00 | Window Closed / Lapsed |