US2858311A
Expired / Lapsed
US
⏱️ 0.0 years remaining
3, 6-bis(tertiary-amino-aliphatic) substituted pyridazines, and their preparation
Assignee: STWB Inc
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Filing: 1955-08-31
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Granted: 1958-10-28
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Expires: 1975-08-31
Abstract
No abstract record available.
Inventors
- 👤 Steck Edgar Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:34
CPC Classifications
C; C07; C07D; C07D237/00; C07D237/02; C07D237/06; C07D237/10; C07D237/14; C07D237/16; C07D237/18; C07D413/00; C07D413/02; C07D413/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
A MEMBER OF THE GROUP CONSISTING OF (A) 3,6-BIS (TERTIARY-AMINO-ALIPATIC) SUBSTITUTED PYRIDAZINES, (B) TERAPEUTICALLY ACEPTABLE ACID-ADDITION SALTS THEREOF, AND (C) A MEMBER OF THE GROUP CONSISTING OF THERAPEUTICALLY ACCEPTABLE LOWER-ALKYL, LOWER-ALKENYL AND LOWER-ARALKYL QUATERNARY AMMONIUM SALTS THEREOF, SAID PYRIDAZINES HAVING THE FORMULA
Claim 2
Dependent Claim
42 words
A MEMBER OF THE GROUP CONSISTING OF (A) 3,6-BIS (TERTIARY-AMINO-ALIPATIC) SUBSTITUTED PYRIDAZINES, (B) TERAPEUTICALLY ACEPTABLE ACID-ADDITION SALTS THEREOF, AND (C) A MEMBER OF THE GROUP CONSISTING OF THERAPEUTICALLY ACCEPTABLE LOWER-ALKYL, LOWER-ALKENYL AND LOWER-ARALKYL QUATERNARY AMMONIUM SALTS THEREOF, SAID PYRIDAZINES HAVING THE FORMULA
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) | 1961-10-27 | 1962-04-28 | 1962-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-27 | 1966-04-28 | 1966-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-27 | 1970-04-28 | 1970-10-28 | $7700.00 | Window Closed / Lapsed |