Patent US3040048A successfully refreshed from Google Patents.
US3040048A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Speran compounds and methods for
Assignee: —
•
Filing: —
•
Granted: 1962-06-19
•
Expires: 1979-06-19
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:54
CPC Classifications
C; C07; C07D; C07D471/00; C07D471/02; C07D471/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
37 words
A COMPOUND OF THE CLASS CONSISTING OF FREE BASES AND NON-TOXIC ACID-ADDITION SALTS THEREOF, SAID FREE BASES HAVING THE STRUCTURAL FORMULA WHEREIN R IS A MEMBER OF THE CLASS CONSISTING OF HYDROGEN, LOWER ALKYL AND LOWER HYDROXYALKYL.
Claim 2
Dependent Claim
37 words
A COMPOUND OF THE CLASS CONSISTING OF FREE BASES AND NON-TOXIC ACID-ADDITION SALTS THEREOF, SAID FREE BASES HAVING THE STRUCTURAL FORMULA WHEREIN R IS A MEMBER OF THE CLASS CONSISTING OF HYDROGEN, LOWER ALKYL AND LOWER HYDROXYALKYL.
Claim 3
Dependent Claim
6 words
A COMPOUND HAVING THE STRUCTUARAL FORMULA
Claim 4
Dependent Claim
6 words
A COMPOUND HAVING THE STRUCTUARAL FORMULA
References Cited (Backward Citations)
US2665276A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-06-18 | 1965-12-18 | 1966-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-18 | 1969-12-18 | 1970-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-18 | 1973-12-18 | 1974-06-19 | $7700.00 | Window Closed / Lapsed |