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Patent US2496222A successfully refreshed from Google Patents.
US2496222A
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Continuous process for emulsion polymerization of unsaturated compounds
Assignee: Shell Development Co
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Filing: 1947-06-17
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Granted: 1950-01-31
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Expires: 1967-06-17
Abstract
No abstract record available.
Inventors
- 👤 Kolvoort Egbert Cornel Hendrik
- 👤 Akkerman Gerrit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:09
CPC Classifications
C; C08; C08F; C08F2/00; C08F2/12; C08F2/16; C08F14/00; C08F14/02; C08F14/04; C08F14/06; C08F2/22; C08F2/24; C08F2/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
19 words
A PROCESS FOR PRODUCING POLYMER FROM A NEUTRAL, SUBSTANTIALLY WATER-INSOLUBLE POLYMERIZABLE COMPOUND WHOSE ONLY CARBON-TO-CARBON UNSATURATION IS A SINGLE
Claim 2
Dependent Claim
19 words
A PROCESS FOR PRODUCING POLYMER FROM A NEUTRAL, SUBSTANTIALLY WATER-INSOLUBLE POLYMERIZABLE COMPOUND WHOSE ONLY CARBON-TO-CARBON UNSATURATION IS A SINGLE
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) | 1953-01-30 | 1953-08-01 | 1954-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-30 | 1957-08-01 | 1958-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-30 | 1961-08-01 | 1962-01-31 | $7700.00 | Window Closed / Lapsed |