US3280129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for d-lysergic acid halide hydrohalides
Assignee: —
•
Filing: —
•
Granted: 1966-10-18
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Expires: 1983-10-18
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:15
CPC Classifications
C; C07; C07D; C07D457/00; C07D457/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A METHOD OF PRODUCING SUBSTANTIALLY PURE D-LYSERGIC ACID CHLORIDE HYDROCHLORIDE IN A HIGH YIELD OF AT LEAST 90% TO 95% WHICH COMPRISES ADDING A SOLUTION OF FRESHLY SUBLIMED PHOSPHORUS PENTACHLORIDE IN PHOSPHORUS TRICHLORIDE TO ANHYDROUS D-LYSERGIC ACID IN AN ICE COLD SOLUTION OF PHOSPHORUS TRICHLORIDE IN ABSOLUTE TETRAHYDROFURAN AND ABSOLUTE CHLOROFORM AND RECOVERING THE RESULTING D-LYSERGIC ACID CHLORIDE HYDROCHLORIDE.
Claim 2
Independent Claim
59 words
A METHOD OF PRODUCING SUBSTANTIALLY PURE D-LYSERGIC ACID CHLORIDE HYDROCHLORIDE IN A HIGH YIELD OF AT LEAST 90% TO 95% WHICH COMPRISES ADDING A SOLUTION OF FRESHLY SUBLIMED PHOSPHORUS PENTACHLORIDE IN PHOSPHORUS TRICHLORIDE TO ANHYDROUS D-LYSERGIC ACID IN AN ICE COLD SOLUTION OF PHOSPHORUS TRICHLORIDE IN ABSOLUTE TETRAHYDROFURAN AND ABSOLUTE CHLOROFORM AND RECOVERING THE RESULTING D-LYSERGIC ACID CHLORIDE HYDROCHLORIDE.
References Cited (Backward Citations)
US3084164A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-17 | 1970-04-18 | 1970-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-17 | 1974-04-18 | 1974-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-17 | 1978-04-18 | 1978-10-18 | $7700.00 | Window Closed / Lapsed |