Patent US3239582A successfully refreshed from Google Patents.
US3239582A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blend of polycarbonate resin and alkenylaromatic resin
Assignee: Dow Chemical Co
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Filing: 1962-04-13
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Granted: 1966-03-08
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Expires: 1982-04-13
Abstract
No abstract record available.
Inventors
- 👤 Keskkula Henno
- 👤 Arthur A Pettis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:16
CPC Classifications
C; C08; C08L; C08L25/00; C08L69/00; C08L67/00; C08L67/02; C08L67/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
A COMPOSITION CONSISTING ESSENTIALLY OF A MIXTURE OF (A) ONE PART BY WEIGHT OF AN ALKENYLAROMATIC RESIN SELECTED FROM THE GROUP CONSISTING OF POLYMERS CONTAINING IN CHEMICALLY COMBINED FORM A TOTAL OF AT LEAST 50% BY WEIGHT OF MONOALKENYL AROMATIC RADICALS DERIVED FROM A COMPOUND HAVING THE FORMULA
Claim 2
Dependent Claim
48 words
A COMPOSITION CONSISTING ESSENTIALLY OF A MIXTURE OF (A) ONE PART BY WEIGHT OF AN ALKENYLAROMATIC RESIN SELECTED FROM THE GROUP CONSISTING OF POLYMERS CONTAINING IN CHEMICALLY COMBINED FORM A TOTAL OF AT LEAST 50% BY WEIGHT OF MONOALKENYL AROMATIC RADICALS DERIVED FROM A COMPOUND HAVING THE FORMULA
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) | 1969-03-07 | 1969-09-06 | 1970-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-07 | 1973-09-06 | 1974-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-07 | 1977-09-06 | 1978-03-08 | $7700.00 | Window Closed / Lapsed |