US3475347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalysts for the polymerization of olefins to yield predominantly dimers and trimers
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1966-11-16
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Granted: 1969-10-28
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Expires: 1986-11-16
Abstract
No abstract record available.
Inventors
- 👤 Burnett H Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:53
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/26; C07C2/30; C08; C08F; C08F10/00; C07C2527/00; C07C2527/06; C07C2527/08; C07C2527/10; C07C2527/122; C07C2527/125; C07C2527/135; C07C2527/138; C07C2531/00; C07C2531/02; C07C2531/12; C07C2531/14; C07C2531/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA617652A
Cited
US3128252A
Cited
US2993035A
Cited
US2914520A
Cited
US3121063A
Cited
US3001951A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-27 | 1973-04-28 | 1973-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-27 | 1977-04-28 | 1977-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-27 | 1981-04-28 | 1981-10-28 | $7700.00 | Window Closed / Lapsed |