Patent US3259594A successfully refreshed from Google Patents.
US3259594A
Expired / Lapsed
US
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Expandable polystyrene compositions
Assignee: Atlantic Richfield Co
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Filing: 1963-07-15
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Granted: 1966-07-05
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Expires: 1983-07-15
Abstract
No abstract record available.
Inventors
- 👤 Harold A Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:08
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/16; C08F; C08F212/00; C08F212/02; C08F212/04; C08F212/06; C08F212/08; C08J2325/00; C08J2325/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A FOAMABLE STYRENE COPOLYMER SUITABLE FOR FORMING A CELLULAR ARTICLE POSSESSING UNIFORMLY SMALL CELLS AND HAVING A DENSITY OF ABOUT ONE POUND PER CUBIC FOOT WHICH COMPOSITION COMPRISES A COPOLYMER OF FROM 97.0-99.5 PARTS BY WEIGHT OF STYRENE AND FROM 3.0-0.5 PARTS BY WEIGHT OF A DIALLYL ESTER OF A SATURATED ALIPHATIC DIBASIC ACID WHICH ACID CONTAINS FROM TWO TO SIX CARBON ATOMS SAID COPOLYMER BEING SOLUBLE IN TOLUENE AND SAID COPOLYMER HAVING UNIFORMLY INCORPORATED THEREIN A NORMALLY LIQUID EXPANDING AGENT.
Claim 2
Dependent Claim
81 words
A FOAMABLE STYRENE COPOLYMER SUITABLE FOR FORMING A CELLULAR ARTICLE POSSESSING UNIFORMLY SMALL CELLS AND HAVING A DENSITY OF ABOUT ONE POUND PER CUBIC FOOT WHICH COMPOSITION COMPRISES A COPOLYMER OF FROM 97.0-99.5 PARTS BY WEIGHT OF STYRENE AND FROM 3.0-0.5 PARTS BY WEIGHT OF A DIALLYL ESTER OF A SATURATED ALIPHATIC DIBASIC ACID WHICH ACID CONTAINS FROM TWO TO SIX CARBON ATOMS SAID COPOLYMER BEING SOLUBLE IN TOLUENE AND SAID COPOLYMER HAVING UNIFORMLY INCORPORATED THEREIN A NORMALLY LIQUID EXPANDING AGENT.
References Cited (Backward Citations)
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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) | 1969-07-04 | 1970-01-03 | 1970-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-04 | 1974-01-03 | 1974-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-04 | 1978-01-03 | 1978-07-05 | $7700.00 | Window Closed / Lapsed |