US2859191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stable aqueous dispersions of copolymers of vinyl acetate with salts of allylsulfonic acid and methallylsulfonic acid and process for preparing same
Assignee: EIDP Inc
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Filing: 1954-07-08
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Granted: 1958-11-04
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Expires: 1974-07-08
Abstract
No abstract record available.
Inventors
- 👤 Turnbull Norris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:21
CPC Classifications
C; C08; C08F; C08F28/00; C08F218/00; C08F218/02; C08F218/04; C08F218/08; C09; C09D; C09D131/00; C09D131/02; C09D131/04
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
70 words
AN AQUEOUS DISPERSION OF A POLYMER OF VINYL ACETATE, SAID DISPERSION BEING MADE BY POLYMERIZING A MONOMERIC MIXTURE CONSISTING OF VINYL ACETATE AND 0.02% TO 1% BY WEIGHT OF SAID VINYL ACETATE OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL SALTS OF ALLYLSULFONIC ACID AND METHALLYLSULFONIC ACID IN AN AQUEOUS MEDIUM AT A TEMPERATURE BETWEEN ABOUT 60*C. AND 95*C. AND IN THE PRESENCE OF A POLYMERIZATION CATALYST.
References Cited (Backward Citations)
US2300920A
Cited
US2601256A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-03 | 1962-05-05 | 1962-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-03 | 1966-05-05 | 1966-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-03 | 1970-05-05 | 1970-11-04 | $7700.00 | Window Closed / Lapsed |