US2721208A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quaternary-ammonium-salt of n-beta-aminoethyl carbamates
Assignee: Olin Corp
•
Filing: 1951-11-30
•
Granted: 1955-10-18
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Expires: 1971-11-30
Abstract
No abstract record available.
Inventors
- 👤 Kathryn A Losee
- 👤 William A Lott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:11
CPC Classifications
C; C07; C07C; C07C271/00; C07C271/06; C07C211/00; C07C211/62; C07C211/63
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
7 words
QUATERNARY AMMONIUM SALTS OF THE GENERAL FORMULA
Claim 2
Dependent Claim
7 words
QUATERNARY AMMONIUM SALTS OF THE GENERAL FORMULA
Claim 3
Dependent Claim
10 words
A PROCESS FOR PREPARING QUATERNARY AMMONIUM SALTS OF THE FORMULA
Claim 4
Dependent Claim
10 words
A PROCESS FOR PREPARING QUATERNARY AMMONIUM SALTS OF 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) | 1958-10-17 | 1959-04-18 | 1959-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-17 | 1963-04-18 | 1963-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-17 | 1967-04-18 | 1967-10-18 | $7700.00 | Window Closed / Lapsed |