US2636867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastics molding compositions
Assignee: RCA Corp
•
Filing: 1950-04-27
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Granted: 1953-04-28
•
Expires: 1970-04-27
Abstract
No abstract record available.
Inventors
- 👤 George P Humfeld
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:23
CPC Classifications
C; C08; C08K; C08K13/00; C08K13/02; C08L; C08L25/00; C08L25/02; C08L25/04; C08L25/06; C08L25/08; C08L25/10
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
103 words
A SOUND RECORD MADE OF A COMPOSITION COMPRISING ABOUT 27% BY WEIGHT OF A PAIR OF PRIMARY RESINOUS INGREDIENTS CONSISTING OF POLYSTYRENE AND A COPOLYMER OF STYRENE AND BUTADIENE, SAID COPOLYMER CONTAINING ABOUT 65% TO ABOUT 85% BY WEIGHT COPOLYMERIZED STYRENE, SAID COMPOSITION FURTHER COMPRISING 2% TO ABOUT 10% BY WEIGHT OF SECONDARY RESINOUS INGREDIENTS FROM THE CLASS CONSISTING OF 70% CHLORINATED SATURATED STRAIGHT CHAIN HYDROCARBONS, THE GASOLINE INSOLUBLE, AROMATIC HYDROCARBON SOLUBLE RESINOUS EXTRACT OF PINE WOOD, AND CHLORINATED BIPHENYLS, ABOUT 1/2 TO 2% BY WEIGHT WAX, ABOUT 1 TO 3% BY WEIGHT METALLIC SOAP AND ABOUT 61 TO 71% BY WEIGHT FILLER.
References Cited (Backward Citations)
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US2388685A
Cited
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-27 | 1956-10-27 | 1957-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-27 | 1960-10-27 | 1961-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-27 | 1964-10-27 | 1965-04-28 | $7700.00 | Window Closed / Lapsed |