Patent US2809194A successfully refreshed from Google Patents.
US2809194A
Expired / Lapsed
US
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Thiadiazine type natriuretic agents
Assignee: —
•
Filing: —
•
Granted: 1957-10-08
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Expires: 1974-10-08
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:56
CPC Classifications
C; C07; C07D; C07D285/00; C07D285/15; C07D285/16; C07D285/18; C07D285/20; C07D285/22; C07D285/24; C07D285/26; C07D285/28; C07D513/00; C07D513/02; C07D513/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
16 words
THIADIAZINE COMPOUNDS SELECTED FROM THE CLASS CONSISTING OF COMPOUNDS HAVING ONE OF THE GENERAL STRUCTURAL FORMULAE
Claim 2
Dependent Claim
16 words
THIADIAZINE COMPOUNDS SELECTED FROM THE CLASS CONSISTING OF COMPOUNDS HAVING ONE OF THE GENERAL STRUCTURAL FORMULAE
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) | 1960-10-07 | 1961-04-08 | 1961-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-07 | 1965-04-08 | 1965-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-07 | 1969-04-08 | 1969-10-08 | $7700.00 | Window Closed / Lapsed |