US3418360A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Esterification in the presence of alkanoic acid amides
Assignee: Gulf Research and Development Co
•
Filing: 1964-12-14
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Granted: 1968-12-24
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Expires: 1984-12-14
Abstract
No abstract record available.
Inventors
- 👤 Schulz Johann Gustav David
- 👤 Arthur C Whitaker
- 👤 Winteler Paolo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:14
CPC Classifications
C; C07; C07C; C07C69/00; C07C69/76; C07C67/00; C07C69/02; C07C69/12; C07C69/34; C07C69/52; C07C69/533; C07C69/54; C07C69/58; C07C69/80
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3069459A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-24 | 1972-06-24 | 1972-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-24 | 1976-06-24 | 1976-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-24 | 1980-06-24 | 1980-12-24 | $7700.00 | Window Closed / Lapsed |