US3029223A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing transparent compositions from styrene, methyl methacrylate and rubbery copolymers of styrene and butadiene and resinous products thereof
Assignee: Dow Chemical Co
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Filing: 1959-02-11
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Granted: 1962-04-10
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Expires: 1979-02-11
Abstract
No abstract record available.
Inventors
- 👤 Billy B Hibbard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:44
CPC Classifications
C; C08; C08F; C08F279/00; C08F279/02; C08F279/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
A RESINOUS TRANSPARENT COMPOSITION OF MATTER COMPRISING AN INTERPOLYMER OF A HOMOGENEOUS MIXTURE OF INGREDIENTS CONSISTING ESSENTIALLY OF FROM 5 TO 10 PARTS BY WEIGHT OF A COPOLYMER OF FROM 55 TO 57 PERCENT BY WEIGHT OF BUTADIENE AND FROM 45 TO 43 PERECENT OF STYRENE AND 100 PARTS BY WEIGHT OF A MIXTURE OF MONOMERS CONSISTING OF FROM 50 TO 60 PERCENT BY WEIGHT OF STYRENE AND FROM 50 TO 40 PERCENT OF METHYL METHACRYLATE.
Claim 2
Dependent Claim
76 words
A RESINOUS TRANSPARENT COMPOSITION OF MATTER COMPRISING AN INTERPOLYMER OF A HOMOGENEOUS MIXTURE OF INGREDIENTS CONSISTING ESSENTIALLY OF FROM 5 TO 10 PARTS BY WEIGHT OF A COPOLYMER OF FROM 55 TO 57 PERCENT BY WEIGHT OF BUTADIENE AND FROM 45 TO 43 PERECENT OF STYRENE AND 100 PARTS BY WEIGHT OF A MIXTURE OF MONOMERS CONSISTING OF FROM 50 TO 60 PERCENT BY WEIGHT OF STYRENE AND FROM 50 TO 40 PERCENT OF METHYL METHACRYLATE.
References Cited (Backward Citations)
US2857360A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-09 | 1965-10-09 | 1966-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-09 | 1969-10-09 | 1970-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-09 | 1973-10-09 | 1974-04-10 | $7700.00 | Window Closed / Lapsed |