Patent US3245829A successfully refreshed from Google Patents.
US3245829A
Expired / Lapsed
US
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Thermoplastic styrene polymer composition
Assignee: Monsanto Co
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Filing: 1962-04-19
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Granted: 1966-04-12
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Expires: 1982-04-19
Abstract
No abstract record available.
Inventors
- 👤 Raymond D Beaulieu
- 👤 Freedman Bernard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:13
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/22; C08J9/228; C08J9/236; C08J2325/00; C08J2325/02; C08J2325/04; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2998; Y10T428/31504; Y10T428/31855; Y10T428/31859; Y10T428/31862; Y10T428/31877
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
A PARTICULATE PARTIALLY EXPANDED FOAMABLE THERMOPLASTIC STYRENE POLYMER COMPOSITION COMPRISING A PARTICULATE PARTIALLY EXPANDED FOAMABLE THERMOPLASTIC STYRENE POLYMER HAVING COATED THEREON A THERMOSETTABLE RESIN, WHICH THERMOSETTABLE RESIN CAN BE ADVANCED TO AN INFUSIBLE STATE UPON THE APPLICATION OF HEAT; SAID PARTIALLY EXPANDED FOAMABLE STYRENE POLYMER BEING SELECTED FROM THE GROUP CONSISTING OF HOMOPOLYMERS AND INTERPOLYMERS OF STYRENE WITH THE INTERPOLYMERS CONTAINING AT LEAST 50 WEIGHT PERCENT OF STYRENE AND HAVING INCORPORATED THEREIN A VOLATILE ORGANIC FOAMING AGENT HAVING AN ATMOSPHERIC BOILING POINT OF LESS THAN ABOUT 100*C.
Claim 2
Dependent Claim
87 words
A PARTICULATE PARTIALLY EXPANDED FOAMABLE THERMOPLASTIC STYRENE POLYMER COMPOSITION COMPRISING A PARTICULATE PARTIALLY EXPANDED FOAMABLE THERMOPLASTIC STYRENE POLYMER HAVING COATED THEREON A THERMOSETTABLE RESIN, WHICH THERMOSETTABLE RESIN CAN BE ADVANCED TO AN INFUSIBLE STATE UPON THE APPLICATION OF HEAT; SAID PARTIALLY EXPANDED FOAMABLE STYRENE POLYMER BEING SELECTED FROM THE GROUP CONSISTING OF HOMOPOLYMERS AND INTERPOLYMERS OF STYRENE WITH THE INTERPOLYMERS CONTAINING AT LEAST 50 WEIGHT PERCENT OF STYRENE AND HAVING INCORPORATED THEREIN A VOLATILE ORGANIC FOAMING AGENT HAVING AN ATMOSPHERIC BOILING POINT OF LESS THAN ABOUT 100*C.
References Cited (Backward Citations)
US2894918A
Cited
US2965514A
Cited
US3154604A
Cited
US2806509A
Cited
US3042633A
Cited
US3086885A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-11 | 1969-10-11 | 1970-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-11 | 1973-10-11 | 1974-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-11 | 1977-10-11 | 1978-04-12 | $7700.00 | Window Closed / Lapsed |