US3546317A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation and polymerization of olefins
Assignee: Compagnie Francaise de Raffinage SA
•
Filing: 1967-12-29
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Granted: 1970-12-08
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Expires: 1987-12-29
Abstract
No abstract record available.
Inventors
- 👤 Andre Gislon
- 👤 Andre Valet
- 👤 Jean-Pierre Michaux
- 👤 Jean-Jacques Bellec
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:12
CPC Classifications
C; C07; C07C; C07C11/00; C07C11/02; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/14; C07C2/16; C07C7/00; C07C7/148; C07C7/17; C07C7/171; C07C2527/00; C07C2527/02; C07C2527/053; C07C2527/054; Y; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/906
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1889952A
Cited
US2171928A
Cited
US2408725A
Cited
US2424143A
Cited
US3005856A
Cited
US2968682A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-07 | 1974-06-08 | 1974-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-07 | 1978-06-08 | 1978-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-07 | 1982-06-08 | 1982-12-08 | $7700.00 | Window Closed / Lapsed |