Patent US2602794A successfully refreshed from Google Patents.
US2602794A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparation of x-amino-s
Assignee: —
•
Filing: —
•
Granted: 1952-07-08
•
Expires: 1969-07-08
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:50
CPC Classifications
C; C07; C07D; C07D239/00; C07D239/02; C07D239/24; C07D239/28; C07D239/46; C07D239/48; C07D239/49; C07D239/47
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
24 words
THE PROCESS OF PREPARING 4-AMINO-5-ARYLPYRIMIDINES WHICH CONSISTS OF CONDENSING AN ALPHA-ARYL-BETA-ALKOXY-ACRYLONITRILE WITH A SUBSTANCE SELECTED FROM THE CLASS CONSISTING OF GUANIDINE AND THE AMIDINES.
Claim 2
Dependent Claim
24 words
THE PROCESS OF PREPARING 4-AMINO-5-ARYLPYRIMIDINES WHICH CONSISTS OF CONDENSING AN ALPHA-ARYL-BETA-ALKOXY-ACRYLONITRILE WITH A SUBSTANCE SELECTED FROM THE CLASS CONSISTING OF GUANIDINE AND THE AMIDINES.
References Cited (Backward Citations)
CH200551A
Cited
US2235638A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-08 | 1956-01-07 | 1956-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-08 | 1960-01-07 | 1960-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-08 | 1964-01-07 | 1964-07-08 | $7700.00 | Window Closed / Lapsed |