US2617809A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process fob the preparation of the
Assignee: —
•
Filing: —
•
Granted: 1952-11-11
•
Expires: 1969-11-11
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:48
CPC Classifications
C; C07; C07D; C07D277/00; C07D277/02; C07D277/20; C07D277/32; C07D277/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
IN A PROCESS FOR THE PREPARATION OF THE SULFURIC ACID SALT OF AMINONITROTHIAZOLES, THE STEPS COMPRISING REACTING AN ACYLAMINOTHIAZOLE AND A MIXTURE OF NITRIC AND SULFURIC ACIDS TO FORM A REACTION MIXTURE CONTAINING SPENT SULFURIC ACID SALT AND ACYLAMINONITROTHIAZOLE, AND CONVERTING THE ACYLAMINONITROTHIAZOLE TO THE SULFURIC ACID SALT OF AMINONITROTHIAZOLE BY HEATING THE REACTION MIXTURE THUS OBTAINED.
Claim 2
Dependent Claim
57 words
IN A PROCESS FOR THE PREPARATION OF THE SULFURIC ACID SALT OF AMINONITROTHIAZOLES, THE STEPS COMPRISING REACTING AN ACYLAMINOTHIAZOLE AND A MIXTURE OF NITRIC AND SULFURIC ACIDS TO FORM A REACTION MIXTURE CONTAINING SPENT SULFURIC ACID SALT AND ACYLAMINONITROTHIAZOLE, AND CONVERTING THE ACYLAMINONITROTHIAZOLE TO THE SULFURIC ACID SALT OF AMINONITROTHIAZOLE BY HEATING THE REACTION MIXTURE THUS OBTAINED.
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) | 1955-11-11 | 1956-05-12 | 1956-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-11 | 1960-05-12 | 1960-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-11 | 1964-05-12 | 1964-11-11 | $7700.00 | Window Closed / Lapsed |