US2508734A
Expired / Lapsed
US
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Emulsion polymerization with a composition comprising diazo thioether-ferricyanide-mercaptan-dihydroxy aromatic compound
Assignee: Phillips Petroleum Co
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Filing: 1947-05-19
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Granted: 1950-05-23
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Expires: 1967-05-19
Abstract
No abstract record available.
Inventors
- 👤 James E Troyan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:29
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
57 words
IN A PROCESS OF POLYMERIZING BY ADDITION POLYMERIZATION AN ETHYLENICALLY UNSATURATED POLYMERIZABLE ORGANIC COMPOUND TO FORM A HIGH MOLECULAR WEIGHT LINEAR POLYMER, THE IMPROVEMENT WHICH COMPRISES POLYMERIZING SAID UNSATURATED ORGANIC COMPOUND IN AQUEOUS DISPERSION IN THE PRESENCE OF A DIHYDROXY AROMATIC COMPOUND SELECTED FROM THE CLASS CONSISTING OF ORTHO AND PARA DIHYDROXY AROMATIC COMPOUNDS HAVING 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) | 1953-05-22 | 1953-11-21 | 1954-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-22 | 1957-11-21 | 1958-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-22 | 1961-11-21 | 1962-05-23 | $7700.00 | Window Closed / Lapsed |