US3522288A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrocyanation of olefins
Assignee: EIDP Inc
•
Filing: 1967-11-06
•
Granted: 1970-07-28
•
Expires: 1987-11-06
Abstract
No abstract record available.
Inventors
- 👤 William Charles Drinkard Jr
- 👤 Brian W Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:09
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/16; B01J31/20; B01J31/02; B01J31/12; B01J31/14; B01J31/146; B01J31/18; B01J31/1845; B01J31/185; C; C07; C07C; C07C253/00; C07C253/08; C07C253/10; B01J2231/00; B01J2231/30; B01J2231/32; B01J2231/323; B01J2231/50; B01J2231/52; B01J2531/00; B01J2531/60; B01J2531/64; B01J2531/66; B01J31/1895
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2451386A
Cited
US2571099A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-27 | 1974-01-26 | 1974-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-27 | 1978-01-26 | 1978-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-27 | 1982-01-26 | 1982-07-28 | $7700.00 | Window Closed / Lapsed |