US2636052A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of
Assignee: —
•
Filing: —
•
Granted: 1953-04-21
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Expires: 1970-04-21
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:58
CPC Classifications
C; C07; C07C; C07C49/00; C07C49/587; C07C45/00; C07C45/61; C07C45/62; C07C45/67; C07C45/68; C07C45/72; C07C45/74; C07C45/78; C07C45/85; C07C49/04; C07C49/20; C07C49/203; C07C49/385; C12; C12P; C12P7/00; C12P7/24; C12P7/26; C07C2601/00; C07C2601/12; C07C2601/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
31 words
A PROCESS OF THE PREPARATION OF A- AND B-6-METHYL-IONOSES, CHARACTERIZED IN THAT 5METHYL-2-ISOPROPYL-1,5-7-DECATRIENON-9 IS SUBJECTED TO A CYCLIZATION BY ACTION OF AN ACIDIC MEDIUM WHICH YIELDS CONJOINTLY STEREOISOMERIC 6-METHYL-A-IONONES AND 6-METHYL-B-IONONES.
Claim 2
Dependent Claim
31 words
A PROCESS OF THE PREPARATION OF A- AND B-6-METHYL-IONOSES, CHARACTERIZED IN THAT 5METHYL-2-ISOPROPYL-1,5-7-DECATRIENON-9 IS SUBJECTED TO A CYCLIZATION BY ACTION OF AN ACIDIC MEDIUM WHICH YIELDS CONJOINTLY STEREOISOMERIC 6-METHYL-A-IONONES AND 6-METHYL-B-IONONES.
References Cited (Backward Citations)
CH262269A
Cited
US2517800A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-20 | 1956-10-20 | 1957-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-20 | 1960-10-20 | 1961-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-20 | 1964-10-20 | 1965-04-21 | $7700.00 | Window Closed / Lapsed |