US2956960A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compositions comprising a styrene polymer, a hydrocarbon and an aminoacid and method of foaming same
Assignee: Monsanto Chemicals Ltd
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Filing: 1958-02-04
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Granted: 1960-10-18
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Expires: 1978-02-04
Abstract
No abstract record available.
Inventors
- 👤 Nemphos Speros Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:34
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0014; C08K; C08K5/00; C08K5/04; C08K5/09; C08J2325/00; C08J2325/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
IN A PROCESS FOR PREPARING A FOAMED STYRENE POLYMER BY EXTRUDING A PARTICULATE FOAMABLE STYRENE POLYMER COMPOSITION HAVING INCORPORATED THEREIN, AS A FOAMING AGENT, AN ALIPHATIC HYDROCARBON HAVING A BOILING POINT OF ABOUT 10-80*C., THE IMPROVEMENT WHICH COMPRISES ADMIXING WITH SAID PARTICULATE FOAMABLE STYRENE POLYMER COMPOSITION A FINELY DIVIDED AMINOACID OF THE FORMULA:
Claim 2
Dependent Claim
53 words
IN A PROCESS FOR PREPARING A FOAMED STYRENE POLYMER BY EXTRUDING A PARTICULATE FOAMABLE STYRENE POLYMER COMPOSITION HAVING INCORPORATED THEREIN, AS A FOAMING AGENT, AN ALIPHATIC HYDROCARBON HAVING A BOILING POINT OF ABOUT 10-80*C., THE IMPROVEMENT WHICH COMPRISES ADMIXING WITH SAID PARTICULATE FOAMABLE STYRENE POLYMER COMPOSITION A FINELY DIVIDED AMINOACID OF THE FORMULA:
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-18 | 1964-04-18 | 1964-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-18 | 1968-04-18 | 1968-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-18 | 1972-04-18 | 1972-10-18 | $7700.00 | Window Closed / Lapsed |