US2562944A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Emulsion polymerization of diolefins in the presence of selected polymerization regulators
Assignee: Armstrong World Industries Inc
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Filing: 1947-12-30
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Granted: 1951-08-07
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Expires: 1967-12-30
Abstract
No abstract record available.
Inventors
- 👤 Jr Charles H Portser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:23
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04; Y; Y10; Y10S; Y10S526/00; Y10S526/911
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A METHOD OF MAKING SYNTHETIC RUBBER COMPRISING COPOLYMERIZING AN OPEN CHAIN ALIPHATIC CONJUGATED DIOLEFINE HAVING 4 TO 6 CARBON ATOMS WITH A VINYL COMPOUND COPOLYMERIZABLE THEREWITH AND OF THE GROUP CONSISTING OF STYRENE, METHYL STYRENE, AND ACRYLONITRILE IN AN AQUEOUS EMULSION IN THE PRESENCE OF AN AROMATIC ALDEHYDE AND A HYDROXY CARBOXYLIC ACID HAVING 2 TO 8 CARBON ATOMS.
Claim 2
Independent Claim
59 words
A METHOD OF MAKING SYNTHETIC RUBBER COMPRISING COPOLYMERIZING AN OPEN CHAIN ALIPHATIC CONJUGATED DIOLEFINE HAVING 4 TO 6 CARBON ATOMS WITH A VINYL COMPOUND COPOLYMERIZABLE THEREWITH AND OF THE GROUP CONSISTING OF STYRENE, METHYL STYRENE, AND ACRYLONITRILE IN AN AQUEOUS EMULSION IN THE PRESENCE OF AN AROMATIC ALDEHYDE AND A HYDROXY CARBOXYLIC ACID HAVING 2 TO 8 CARBON ATOMS.
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) | 1954-08-06 | 1955-02-05 | 1955-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-06 | 1959-02-05 | 1959-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-06 | 1963-02-05 | 1963-08-07 | $7700.00 | Window Closed / Lapsed |