US2875187A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suspension polymerization using sorbitol, methyl cellulose and gelatin
Assignee: Occidental Chemical Corp
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Filing: 1957-02-01
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Granted: 1959-02-24
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Expires: 1977-02-01
Abstract
No abstract record available.
Inventors
- 👤 Ii James R Gerhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:27
CPC Classifications
C; C08; C08F; C08F14/00; C08F14/02; C08F14/04; C08F14/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
PROCESS WHICH COMPRISES POLYMERIZING IN SUSPENSION IN AN AQUEOUS MEDIUM, A MONOMERIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF VINYL CHLORIDE AND MIXTURES THEREOF WITH UP TO 20%, BASED ON THE WEIGHT OF SAID MIXTURE, OF OTHER ETHYLENICALLY UNSATURATED COMPOUNDS COPOLYMERIZABLE THEREWITH, SAID AQUEOUS MEDIUM HAVING DISSOLVED THEREIN.
Claim 2
Dependent Claim
48 words
PROCESS WHICH COMPRISES POLYMERIZING IN SUSPENSION IN AN AQUEOUS MEDIUM, A MONOMERIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF VINYL CHLORIDE AND MIXTURES THEREOF WITH UP TO 20%, BASED ON THE WEIGHT OF SAID MIXTURE, OF OTHER ETHYLENICALLY UNSATURATED COMPOUNDS COPOLYMERIZABLE THEREWITH, SAID AQUEOUS MEDIUM HAVING DISSOLVED THEREIN.
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) | 1962-02-23 | 1962-08-25 | 1963-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-23 | 1966-08-25 | 1967-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-23 | 1970-08-25 | 1971-02-24 | $7700.00 | Window Closed / Lapsed |