US2535858A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2-mercapto-3-amino-3,6-dihydro-pyrimidines
Assignee: Goodrich Corp
•
Filing: 1949-09-13
•
Granted: 1950-12-26
•
Expires: 1969-09-13
Abstract
No abstract record available.
Inventors
- 👤 Roger A Mathes
- 👤 Floyd D Stewart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:20
CPC Classifications
C; C07; C07D; C07D239/00; C07D239/02; C07D239/20; C07D239/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
A 2-MERCAPTO-3-AMINO-3,6-DIHYDROPYRIMIDINE HAVING THE FORMULA
Claim 2
Dependent Claim
5 words
A 2-MERCAPTO-3-AMINO-3,6-DIHYDROPYRIMIDINE HAVING THE FORMULA
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) | 1953-12-25 | 1954-06-26 | 1954-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-25 | 1958-06-26 | 1958-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-25 | 1962-06-26 | 1962-12-26 | $7700.00 | Window Closed / Lapsed |