Patent US3155667A successfully refreshed from Google Patents.
US3155667A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of
Assignee: —
•
Filing: —
•
Granted: 1964-11-03
•
Expires: 1981-11-03
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:19
CPC Classifications
C; C07; C07D; C07D457/00; C07D457/02; C07D457/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
1 words
9-HYDROXY-DIHYDRO-LYSERGOL.
Claim 2
Dependent Claim
1 words
9-HYDROXY-DIHYDRO-LYSERGOL.
Claim 3
Dependent Claim
9 words
A PROCESS OF PREPARING A COMPOUND OF THE FORMULA:
Claim 4
Dependent Claim
9 words
A PROCESS OF PREPARING A COMPOUND 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) | 1967-11-03 | 1968-05-04 | 1968-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-03 | 1972-05-04 | 1972-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-03 | 1976-05-04 | 1976-11-03 | $7700.00 | Window Closed / Lapsed |