US3359345A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Butadiene-styrene block copolymers reacted with monomeric mixtures
Assignee: Dart Industries Inc
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Filing: 1964-11-25
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Granted: 1967-12-19
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Expires: 1984-11-25
Abstract
No abstract record available.
Inventors
- 👤 Kenneth W Doak
- 👤 Frederick E Carrock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 01:34
CPC Classifications
C; C08; C08F; C08F279/00; C08F279/02; C08F287/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A TRANSPARENT GRAFT INTERPOLYMER OF FROM 4 TO 20% BY WEIGHT OF A SOLUTION POLYMERIZED LINEAR STYRENE-BUTADIENE BLOCK COPOLYMER HAVING FROM 5 TO 20 PERCENT BOUND STYRENE, THE REMAINDER 96 TO 80% COMPRISING IN PARTS BY WEIGHT 10 TO 25 PARTS ALPHA-ALKYLSTYRENE, 84 TO 55 PARTS ALKYL METHACRYLATE, 3 TO 10 PARTS ACRYLONITRILE AND 3 TO 10 PARTS OF METHACRYLIC ACID.
Claim 2
Dependent Claim
61 words
A TRANSPARENT GRAFT INTERPOLYMER OF FROM 4 TO 20% BY WEIGHT OF A SOLUTION POLYMERIZED LINEAR STYRENE-BUTADIENE BLOCK COPOLYMER HAVING FROM 5 TO 20 PERCENT BOUND STYRENE, THE REMAINDER 96 TO 80% COMPRISING IN PARTS BY WEIGHT 10 TO 25 PARTS ALPHA-ALKYLSTYRENE, 84 TO 55 PARTS ALKYL METHACRYLATE, 3 TO 10 PARTS ACRYLONITRILE AND 3 TO 10 PARTS OF METHACRYLIC ACID.
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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) | 1970-12-18 | 1971-06-19 | 1971-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-18 | 1975-06-19 | 1975-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-18 | 1979-06-19 | 1979-12-19 | $7700.00 | Window Closed / Lapsed |