US2498694A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of aqueous dispersions by polymerization in the presence of ammonium alginate
Assignee: Individual
•
Filing: 1945-08-24
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Granted: 1950-02-28
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Expires: 1965-08-24
Abstract
No abstract record available.
Inventors
- 👤 William C Mast
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:21
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/12; C08F20/14; C08F2/00; C08F2/12; C08F2/16; C08F2/22; C08F2/24; Y; Y10; Y10S; Y10S526/00; Y10S526/911
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
79 words
A PROCESS FOR PRODUCING A STABLE AQUEOUS RESIN DISPERSION SUITABLE FOR BRUSHING, SPRAYING, DIPPING, OR CALENDERING, COMPRISING: POLYMERIZING A POLYMERIZABLE MATERIAL OF THE GROUP CONSISTING OF MONOMERIC LOWER ALKYL ACRYLATE ALONE AND A MIXTURE CONSISTING OF MONOMERIC LOWER ALKYL ACRYLATE AND ACRYLONITRILE, BY HEATING IT IN AQUEOUS MEDIUM IN THE PRESENCE OF A SYNTHETIC IONIC SURFACE-ACTIVE WETTING AND EMULSIFYING AGENT THEREFOR; A PEROXIDE POLYMERIZING CATALYST; AMMONIA; AND COLLOID CONSISTING OF AMMONIUM ALGINATE; TO FORM A SMOOTH, CREAMY, STABLE EMULSION.
References Cited (Backward Citations)
US2123599A
Cited
US2097212A
Cited
US2191654A
Cited
US2388600A
Cited
US2393438A
Cited
US2410089A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-27 | 1953-08-29 | 1954-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-27 | 1957-08-29 | 1958-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-27 | 1961-08-29 | 1962-02-28 | $7700.00 | Window Closed / Lapsed |