US2506019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carboxyphenylamino-amino-diphenyl sulfide and preparation thereof
Assignee: Ward Blenkinsop and Co Ltd
•
Filing: 1947-10-24
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Granted: 1950-05-02
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Expires: 1967-10-24
Abstract
No abstract record available.
Inventors
- 👤 Goldberg Alan August
- 👤 Turner Harold Silas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:38
CPC Classifications
C; C07; C07C; C07C323/00; C07C323/50; C07C323/51; C07C323/60; A; A61; A61K; A61K31/00; A61K31/185; A61K31/19; A61K31/195; A61P; A61P31/00; A61P31/04; A61P31/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
9 words
AS A NEW PRODUCT 4-(ORTHO-CARBOXYPHENYLAMINO) -4'' -AMINO DIPHENYL SULPHIDE.
Claim 2
Dependent Claim
9 words
AS A NEW PRODUCT 4-(ORTHO-CARBOXYPHENYLAMINO) -4'' -AMINO DIPHENYL SULPHIDE.
Claim 3
Dependent Claim
47 words
THE PROCESS OF PREPARING 4- (ORTHO-CARBOXYPHENYLAMINO) -4'' -AMINO DIPHENYL SULPHIDE WHICH COMPRISES REACTING AN ORTHOHALOGENOBENZOIC ACID WITH A 4-AMINO - 4'' -CARBOXYACYLAMIDODIPHENYL SULPHIDE IN THE PRESENCE OF AN ACID ACCEPTOR AND METALLIC COPPER, SEPARATING THE RESULTING 4(ORTHOCARBOXYPHENYLAMINO) -4'' - CARBOXY - ACYLAMIDOPHENYLSULPHIDE AND HYDROLYSING THE CARBOXYACYLAMIDO GROUP.
Claim 4
Dependent Claim
47 words
THE PROCESS OF PREPARING 4- (ORTHO-CARBOXYPHENYLAMINO) -4'' -AMINO DIPHENYL SULPHIDE WHICH COMPRISES REACTING AN ORTHOHALOGENOBENZOIC ACID WITH A 4-AMINO - 4'' -CARBOXYACYLAMIDODIPHENYL SULPHIDE IN THE PRESENCE OF AN ACID ACCEPTOR AND METALLIC COPPER, SEPARATING THE RESULTING 4(ORTHOCARBOXYPHENYLAMINO) -4'' - CARBOXY - ACYLAMIDOPHENYLSULPHIDE AND HYDROLYSING THE CARBOXYACYLAMIDO GROUP.
References Cited (Backward Citations)
US2003842A
Cited
US2151543A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-01 | 1953-10-31 | 1954-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-01 | 1957-10-31 | 1958-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-01 | 1961-10-31 | 1962-05-02 | $7700.00 | Window Closed / Lapsed |