Patent US2918470A successfully refreshed from Google Patents.
US2918470A
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Acid-addition, quaternary salts and method of preparing same
Assignee: Olin Corp
•
Filing: 1955-03-14
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Granted: 1959-12-22
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Expires: 1975-03-14
Abstract
No abstract record available.
Inventors
- 👤 Krapcho John
- 👤 William A Lott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:59
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/24; C07D213/36; C07D213/38; C07D211/00; C07D211/04; C07D211/06; C07D211/08; C07D211/18; C07D211/26; C07D215/00; C07D215/02; C07D215/12
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
8 words
ACID-ADDITION SALTS OF COMPOUNDS OF THE GENERAL FORMULA:
Claim 2
Dependent Claim
8 words
ACID-ADDITION SALTS OF COMPOUNDS OF THE GENERAL FORMULA:
Claim 3
Dependent Claim
11 words
AN ACID-ADDITION SALT OF A TETRAHYDROQUINOLYL COMPOUND OF THE GENERAL FORMULA:
Claim 4
Dependent Claim
11 words
AN ACID-ADDITION SALT OF A TETRAHYDROQUINOLYL COMPOUND OF THE GENERAL FORMULA:
References Cited (Backward Citations)
US2684965A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-21 | 1963-06-22 | 1963-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-21 | 1967-06-22 | 1967-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-21 | 1971-06-22 | 1971-12-22 | $7700.00 | Window Closed / Lapsed |