US3090767A
Expired / Lapsed
US
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Devolatilization extrusion method for preparing a monovinyl aromatic resinrubber blend
Assignee: Wyeth Holdings LLC
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Filing: 1957-11-15
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Granted: 1963-05-21
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Expires: 1977-11-15
Abstract
No abstract record available.
Inventors
- 👤 Joseph D Colgan
- 👤 Harold E Fife
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:42
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/005; B; B29; B29C; B29C48/00; B29C48/03; B29C48/25; B29C48/36; B29C48/50; B29C48/76
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
18 words
A METHOD FOR HOMOGENEOUSLY BLENDING (A) A NONRUBBERY RESINOUS POLYMER OF A MONOVINYL AROMATIC COMPOUND HAVING THE FORMULA:
Claim 2
Independent Claim
18 words
A METHOD FOR HOMOGENEOUSLY BLENDING (A) A NONRUBBERY RESINOUS POLYMER OF A MONOVINYL AROMATIC 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) | 1966-05-20 | 1966-11-19 | 1967-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-20 | 1970-11-19 | 1971-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-20 | 1974-11-19 | 1975-05-21 | $7700.00 | Window Closed / Lapsed |