US2525075A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of thioamides
Assignee: Rohm and Haas Co
•
Filing: 1948-06-17
•
Granted: 1950-10-10
•
Expires: 1968-06-17
Abstract
No abstract record available.
Inventors
- 👤 Charles L Levesque
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:08
CPC Classifications
C; C07; C07C; C07C279/00; C07C279/28; C07C323/00; C07C323/50; C07C323/51; C07C323/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
16 words
THE PROCESS OF PREPARING A MIXTURE OF A THIOACETAMIDE AND A DITHIOOXALODIAMIDE HAVING RESPECTIVELY THE FORMULAS
Claim 2
Dependent Claim
16 words
THE PROCESS OF PREPARING A MIXTURE OF A THIOACETAMIDE AND A DITHIOOXALODIAMIDE HAVING RESPECTIVELY THE FORMULAS
References Cited (Backward Citations)
US2495567A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-09 | 1954-04-10 | 1954-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-09 | 1958-04-10 | 1958-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-09 | 1962-04-10 | 1962-10-10 | $7700.00 | Window Closed / Lapsed |