US3042674A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Xanthene and thiaxanthene cyclic amidines
Assignee: SAHYUN
•
Filing: 1960-07-12
•
Granted: 1962-07-03
•
Expires: 1980-07-12
Abstract
No abstract record available.
Inventors
- 👤 John A Faust
- 👤 Sahyun Melville
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:23
CPC Classifications
C; C07; C07D; C07D405/00; C07D405/02; C07D405/04; C07D405/06; C07D409/00; C07D409/02; C07D409/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
12 words
COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF (A) COMPOUNDS HAVING THE FORMULA:
Claim 2
Dependent Claim
12 words
COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF (A) COMPOUNDS HAVING THE FORMULA:
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) | 1965-07-02 | 1966-01-01 | 1966-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-02 | 1970-01-01 | 1970-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-02 | 1974-01-01 | 1974-07-03 | $7700.00 | Window Closed / Lapsed |