Patent US2750349A successfully refreshed from Google Patents.
US2750349A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compositions, including polystyrene and terphenyl
Assignee: RCA Corp
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Filing: 1952-10-06
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Granted: 1956-06-12
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Expires: 1972-10-06
Abstract
No abstract record available.
Inventors
- 👤 O'herren David Hale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:42
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/09; C08K5/098; C08L; C08L25/00; C08L25/02; C08L25/04; C08L25/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
48 words
A SYNTHETIC RESINOUS MOLDING COMPOSITION COMPRISING POLYSTYRENE 67.8 TO 93%, A RESINOUS COPOLYMER OF STYRENE AND BUTADIENE 1 TO 25%, A METAL SOAP 0.5 TO 3%, AND A MATERIAL CONSISTING OF AT LEAST ONE SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF ORTHO-, META-, AND PARA-TERPHENYL 5 TO 15%.
References Cited (Backward Citations)
US2330108A
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US2317137A
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US2397093A
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US2383145A
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US2456413A
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US2616862A
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US2681323A
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US2636867A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-12 | 1959-12-12 | 1960-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-12 | 1963-12-12 | 1964-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-12 | 1967-12-12 | 1968-06-12 | $7700.00 | Window Closed / Lapsed |