US3403175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of glycol diesters from olefins and carboxylic acid anhydrides
Assignee: Union Oil Company of California
•
Filing: 1965-09-27
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Granted: 1968-09-24
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Expires: 1985-09-27
Abstract
No abstract record available.
Inventors
- 👤 Larry G Wolgemuth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:36
CPC Classifications
C; C07; C07C; C07C69/00; C07C69/02; C07C69/12; C07C69/16; C07C67/00; C07C67/04; C07C67/05; C07C69/22; C07C69/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-24 | 1972-03-25 | 1972-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-24 | 1976-03-25 | 1976-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-24 | 1980-03-25 | 1980-09-24 | $7700.00 | Window Closed / Lapsed |