Patent US3530168A successfully refreshed from Google Patents.
US3530168A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of esters
Assignee: Union Oil Company of California
•
Filing: 1966-08-30
•
Granted: 1970-09-22
•
Expires: 1986-08-30
Abstract
No abstract record available.
Inventors
- 👤 Giovanni Biale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:15
CPC Classifications
C; C07; C07C; C07C69/00; C07C69/52; C07C69/533; C07C69/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2851486A
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US3035088A
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US3168553A
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US3221045A
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NL6408476A
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US3381030A
Cited
US3397226A
Cited
US3397225A
Cited
US3349119A
Cited
US3346625A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-21 | 1974-03-23 | 1974-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-21 | 1978-03-23 | 1978-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-21 | 1982-03-23 | 1982-09-22 | $7700.00 | Window Closed / Lapsed |