US2677699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quaternary ammonium salts of oxygen containing strong sulfur acids in the cation of which there are no more than two aryl groups and one group having a methacrylyloxy substituent
Assignee: EIDP Inc
•
Filing: 1952-01-21
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Granted: 1954-05-04
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Expires: 1972-01-21
Abstract
No abstract record available.
Inventors
- 👤 Arthur L Barney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:27
CPC Classifications
C; C08; C08F; C08F28/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
BETA - METHACRYLYLOXYETHYLTRIMETHYLAMONIUM METHYL SULFATE.
Claim 2
Dependent Claim
5 words
BETA - METHACRYLYLOXYETHYLTRIMETHYLAMONIUM METHYL SULFATE.
References Cited (Backward Citations)
US2103265A
Cited
US2138763A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-03 | 1957-11-02 | 1958-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-03 | 1961-11-02 | 1962-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-03 | 1965-11-02 | 1966-05-04 | $7700.00 | Window Closed / Lapsed |