US2744118A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phthalimidopropionylaminoethyl disulfide and preparation
Assignee: Parke Davis and Co LLC
•
Filing: 1953-05-06
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Granted: 1956-05-01
•
Expires: 1973-05-06
Abstract
No abstract record available.
Inventors
- 👤 Cavalla John Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:46
CPC Classifications
C; C07; C07D; C07D209/00; C07D209/02; C07D209/44; C07D209/48
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
29 words
PROCESS FOR OBTAINING BIS-(B-ALANYL-2-AMINOETHYL) DISULFIDE WHICH COMPRISES CONDENSING B-PHTHALIMIDOPROPIONYL CHLORIDE WITH BIS-(B-AMINOETHYL)-DISULFIDE IN THE PRESENCE OF AN ALKALINE AGENT TO OBTAIN BIS-(BPHTHALIMIDO-PROPIONYL-2-AMINOETHYL) DISULFIDE AND REACTING, SAID BIS-(B-PHTHALIMIDOPROPIONYL-2-AMINOETHYL)-DISULFIDE WITH HYDRAZINE.
Claim 2
Dependent Claim
29 words
PROCESS FOR OBTAINING BIS-(B-ALANYL-2-AMINOETHYL) DISULFIDE WHICH COMPRISES CONDENSING B-PHTHALIMIDOPROPIONYL CHLORIDE WITH BIS-(B-AMINOETHYL)-DISULFIDE IN THE PRESENCE OF AN ALKALINE AGENT TO OBTAIN BIS-(BPHTHALIMIDO-PROPIONYL-2-AMINOETHYL) DISULFIDE AND REACTING, SAID BIS-(B-PHTHALIMIDOPROPIONYL-2-AMINOETHYL)-DISULFIDE WITH HYDRAZINE.
Claim 3
Dependent Claim
1 words
BIS-(B-PHTHALIMIDOPROPIONYL-2-AMINOETHYL)-DISULFIDE.
Claim 4
Dependent Claim
1 words
BIS-(B-PHTHALIMIDOPROPIONYL-2-AMINOETHYL)-DISULFIDE.
References Cited (Backward Citations)
US2680767A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-01 | 1959-10-31 | 1960-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-01 | 1963-10-31 | 1964-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-01 | 1967-10-31 | 1968-05-01 | $7700.00 | Window Closed / Lapsed |