Patent US2619478A successfully refreshed from Google Patents.
US2619478A
Expired / Lapsed
US
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Molding compositions of vinyl aromatic resins
Assignee: Dow Chemical Co
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Filing: 1949-11-14
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Granted: 1952-11-25
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Expires: 1969-11-14
Abstract
No abstract record available.
Inventors
- 👤 Jr Henry W Wehr
- 👤 Jr William C Sager
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:21
CPC Classifications
C; C08; C08F; C08F2/00; C08F2/36; C08L; C08L25/00; C08L25/02; C08L25/04; C08L25/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A MOLDING COMPOSITION COMPRISED ESSENTIALLY OF A SOLID THERMOPLASTIC VINYL AROMATIC RESIN WHICH IS A POLYMER OF A COMPOUND OF THE CLASS CONSISTING OF MONOVINYL AROMATIC HYDROCARBONS OF THE BENZENE SERIES AND NUCLEAR CHLORINATED MONOVINYL AROMATIC HYDROCARBONS OF THE BENZENE SERIES UNIFORMLY INCORPORATED WITH FROM 0.5 TO 4 PER CENT BY WEIGHT OF A WHITE MINERAL OIL HAVING A BOILING RANGE BETWEEN 200* AND 600* C. AND CONSISTING PRINCIPALLY OF SATURATED ALIPHATIC HYDROCARBONS, SAID MINERAL OIL HAVING A VISCOSITY BETWEEN 10 AND 70 CENTISTOKES AT 100* F. AND BEING SUBSTANTIALLY FREE OF OLEFINIC LINKAGES.
Claim 2
Dependent Claim
94 words
A MOLDING COMPOSITION COMPRISED ESSENTIALLY OF A SOLID THERMOPLASTIC VINYL AROMATIC RESIN WHICH IS A POLYMER OF A COMPOUND OF THE CLASS CONSISTING OF MONOVINYL AROMATIC HYDROCARBONS OF THE BENZENE SERIES AND NUCLEAR CHLORINATED MONOVINYL AROMATIC HYDROCARBONS OF THE BENZENE SERIES UNIFORMLY INCORPORATED WITH FROM 0.5 TO 4 PER CENT BY WEIGHT OF A WHITE MINERAL OIL HAVING A BOILING RANGE BETWEEN 200* AND 600* C. AND CONSISTING PRINCIPALLY OF SATURATED ALIPHATIC HYDROCARBONS, SAID MINERAL OIL HAVING A VISCOSITY BETWEEN 10 AND 70 CENTISTOKES AT 100* F. AND BEING SUBSTANTIALLY FREE OF OLEFINIC LINKAGES.
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) | 1955-11-25 | 1956-05-26 | 1956-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-25 | 1960-05-26 | 1960-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-25 | 1964-05-26 | 1964-11-25 | $7700.00 | Window Closed / Lapsed |