US3453224A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vinylation of fatty substances
Assignee: NL SPENCER KELLOG Inc
•
Filing: 1967-05-17
•
Granted: 1969-07-01
•
Expires: 1987-05-17
Abstract
No abstract record available.
Inventors
- 👤 David D Taft
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:40
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/46; C08G63/48; C11; C11C; C11C3/00; C11C3/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1975959A
Cited
US2655488A
Cited
GB714432A
Cited
GB711141A
Cited
US2736716A
Cited
US2928796A
Cited
GB988737A
Cited
US3367894A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-30 | 1972-12-30 | 1973-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-30 | 1976-12-30 | 1977-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-30 | 1980-12-30 | 1981-07-01 | $7700.00 | Window Closed / Lapsed |