US3328405A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of substituted pyrimidines
Assignee: Stauffer Chemical Co
•
Filing: 1964-05-22
•
Granted: 1967-06-27
•
Expires: 1984-05-22
Abstract
No abstract record available.
Inventors
- 👤 Raymond A Simone
- 👤 Mervin E Brokke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:11
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/547; C07F9/645; C07F9/6509; C07F9/6512
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
15 words
AN IMPROVED PROCESS FOR THE PREPARATING OF 0,0-DIALKYDITHIOPHOSPHORYL DERIVATIVES OF PYRIMIDINES REPRESENTED BY THE STRUCTURE
Claim 2
Dependent Claim
15 words
AN IMPROVED PROCESS FOR THE PREPARATING OF 0,0-DIALKYDITHIOPHOSPHORYL DERIVATIVES OF PYRIMIDINES REPRESENTED BY THE STRUCTURE
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-06-26 | 1970-12-26 | 1971-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-26 | 1974-12-26 | 1975-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-26 | 1978-12-26 | 1979-06-27 | $7700.00 | Window Closed / Lapsed |