US3231566A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrocyanation process
Assignee: Shionogi and Co Ltd
•
Filing: 1963-02-26
•
Granted: 1966-01-25
•
Expires: 1983-02-26
Abstract
No abstract record available.
Inventors
- 👤 Nagata Wataru
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:26
CPC Classifications
C; C07; C07J; C07J41/00; C07D; C07D221/00; C07D221/02; C07D221/22; C07J63/00; C07J63/008; C07J75/00; C07C; C07C2603/00; C07C2603/02; C07C2603/04; C07C2603/22; C07C2603/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
16 words
A PROCESS WHICH COMPRISES REACTING A POLYHYDROPOLYCYCLIC A,B-UNSATURATED KETONE WITH A COMPLEX ANION OF THE FORMULA:
Claim 2
Dependent Claim
16 words
A PROCESS WHICH COMPRISES REACTING A POLYHYDROPOLYCYCLIC A,B-UNSATURATED KETONE WITH A COMPLEX ANION OF THE FORMULA:
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |