US2533698A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Urethanes containing the lysergic
Assignee: —
•
Filing: —
•
Granted: 1950-12-12
•
Expires: 1967-12-12
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:05
CPC Classifications
C; C07; C07D; C07D457/00; C07D457/10; C07D457/12; C07D457/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
55 words
THE OPTICALLY ACTIVE URETHANES OF THE FORMULA R.NHCOOR'', WHEREIN R DENOTES A RADICAL SELECTED FROM THE GROUP CONSISTING OF 6-METHYLERGOLENYL-8-, OF 6-METHYL-ISOERGOLENYL-8- AND OF A MIXTURE OF 6-METHYL-ERGOLENYL-8- AND 6-METHYL-ISOERGOLENYL-8- AND R'' DENOTES AND ALKYL GROUP CONTAINING 1 TO 4 CARBON ATOMS, WHICH URETHANES GIVE THE KELLER''S COLOR REACTION AND WHICH ARE THERAPEUTICALLY USEFUL COMPOUNDS.
Claim 2
Dependent Claim
55 words
THE OPTICALLY ACTIVE URETHANES OF THE FORMULA R.NHCOOR'', WHEREIN R DENOTES A RADICAL SELECTED FROM THE GROUP CONSISTING OF 6-METHYLERGOLENYL-8-, OF 6-METHYL-ISOERGOLENYL-8- AND OF A MIXTURE OF 6-METHYL-ERGOLENYL-8- AND 6-METHYL-ISOERGOLENYL-8- AND R'' DENOTES AND ALKYL GROUP CONTAINING 1 TO 4 CARBON ATOMS, WHICH URETHANES GIVE THE KELLER''S COLOR REACTION AND WHICH ARE THERAPEUTICALLY USEFUL COMPOUNDS.
Claim 3
Dependent Claim
89 words
A PROCESS FOR THE PREPARATION OF A URETHANE CONTAINING THE LYSERGIC ACID RING SYSTEM AND CORRESPONDING TO THE FORMULA R.NH.COOR.R'' WHEREIN R DENOTES A MEMBER SELECTED FROM THE GROUP CONSISTING OF THE 6-METHYL-ERGOLENYL-8- AND 6METHYL-ISOERGOLENYL-8-RADICALS, AND R'' DENOTES AN ALKYL GROUP WITH 1 TO CARBON ATOMS, WHICH COMPRISES BOILING AN AZIDE SELECTED FROM THE GROUP CONSISTING OF LYSERGIC ACID AZIDE, ISOLYSERGIC ACID AZIDE AND A MIXTURE OF LYSERGIC AND ISOLYSERGIC ACID AZIDES IN AN ANHYDROUS NON-ALCOHOLIC SOLVENT WITH A BOILING LOW MOLECULAR ALCOHOL CONTAINING 1 TO 4 CARBON ATOMS.
Claim 4
Dependent Claim
89 words
A PROCESS FOR THE PREPARATION OF A URETHANE CONTAINING THE LYSERGIC ACID RING SYSTEM AND CORRESPONDING TO THE FORMULA R.NH.COOR.R'' WHEREIN R DENOTES A MEMBER SELECTED FROM THE GROUP CONSISTING OF THE 6-METHYL-ERGOLENYL-8- AND 6METHYL-ISOERGOLENYL-8-RADICALS, AND R'' DENOTES AN ALKYL GROUP WITH 1 TO CARBON ATOMS, WHICH COMPRISES BOILING AN AZIDE SELECTED FROM THE GROUP CONSISTING OF LYSERGIC ACID AZIDE, ISOLYSERGIC ACID AZIDE AND A MIXTURE OF LYSERGIC AND ISOLYSERGIC ACID AZIDES IN AN ANHYDROUS NON-ALCOHOLIC SOLVENT WITH A BOILING LOW MOLECULAR ALCOHOL CONTAINING 1 TO 4 CARBON ATOMS.
References Cited (Backward Citations)
US2090430A
Cited
US2265217A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-11 | 1954-06-12 | 1954-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-11 | 1958-06-12 | 1958-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-11 | 1962-06-12 | 1962-12-12 | $7700.00 | Window Closed / Lapsed |