Patent US2735842A successfully refreshed from Google Patents.
US2735842A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vinyl amevo ether polymers and their
Assignee: —
•
Filing: —
•
Granted: 1956-02-21
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Expires: 1973-02-21
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:23
CPC Classifications
C; C08; C08F; C08F16/00; C08F16/12; C08F16/14; C08F16/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
A SULPHUR-FREE HOMOPOLYMER OF A VINYL DIALKYLAMINOETHYL ENTER CORRESPONDING ESSENTIALLY TO THE GENERAL FORMULA:
Claim 2
Dependent Claim
14 words
A SULPHUR-FREE HOMOPOLYMER OF A VINYL DIALKYLAMINOETHYL ENTER CORRESPONDING ESSENTIALLY TO THE GENERAL 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) | 1959-02-20 | 1959-08-22 | 1960-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-20 | 1963-08-22 | 1964-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-20 | 1967-08-22 | 1968-02-21 | $7700.00 | Window Closed / Lapsed |