US3542671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydroisomerization of olefins to isoparaffins
Assignee: Universal Oil Products Co
•
Filing: 1968-05-09
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Granted: 1970-11-24
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Expires: 1988-05-09
Abstract
No abstract record available.
Inventors
- 👤 Ernest L Pollitzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:43
CPC Classifications
C; C10; C10G; C10G35/00; C10G35/04; C10G35/06; C10G35/095; B; B01; B01J; B01J23/00; B01J23/38; B01J23/40; B01J23/42; C07; C07C; C07C5/00; C07C5/02; C07C5/13; B01J37/00; B01J37/02; B01J37/03; C07C2521/00; C07C2521/12; C07C2529/00; C07C2529/04; C07C2529/06; C07C2529/08; C07C2529/10; C07C2529/12; C07C2529/18; C07C2529/20; C07C2529/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2478916A
Cited
US3182097A
Cited
US3116232A
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US3140253A
Cited
US3301917A
Cited
US3463744A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-23 | 1974-05-25 | 1974-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-23 | 1978-05-25 | 1978-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-23 | 1982-05-25 | 1982-11-24 | $7700.00 | Window Closed / Lapsed |