US2919274A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Amidines
Assignee: Individual
•
Filing: 1957-09-17
•
Granted: 1959-12-29
•
Expires: 1977-09-17
Abstract
No abstract record available.
Inventors
- 👤 John A Faust
- 👤 Sahyun Melville
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:04
CPC Classifications
C; C07; C07D; C07D239/00; C07D239/02; C07D239/06; C07D233/00; C07D233/04; C07D233/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
11 words
2 - (O - CHLOROBENZYL) - 5 -HYDROXY -,1,4,5,6 -TETRAHYDROPYRIMIDINE HYDROCHLRIDE.
Claim 2
Dependent Claim
15 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF (A) THOSE HAVING THE FOLLOWING STRUCTUAL FORMULA:
References Cited (Backward Citations)
GB596663A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-28 | 1963-06-29 | 1963-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-28 | 1967-06-29 | 1967-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-28 | 1971-06-29 | 1971-12-29 | $7700.00 | Window Closed / Lapsed |