Patent US2835645A successfully refreshed from Google Patents.
US2835645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High styrene-low diene resins of high heat softening point
Assignee: Goodyear Tire and Rubber Co
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Filing: 1955-01-05
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Granted: 1958-05-20
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Expires: 1975-01-05
Abstract
No abstract record available.
Inventors
- 👤 Ianni James D D
- 👤 Harold S Sell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:55
CPC Classifications
C; C08; C08F; C08F257/00; C08F257/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A TOUGH, READILY MOLDABLE THERMOPLASTIC RESIN HAVING A HEAT DISTORTION POINT OF AT LEAST 170*F. COMPRISING THE POLYMERIZATE RESULTING FROM THE AQUEOUS EMULSION POLYMERIZATION OF A MIXTURE CONSISTING OF STYRENE MONOMER AND BUTADIENE MONOMER IN THE PRESENCE OF A LATEX OF POLYSTYRENE RESULTING FROM THE AQUEOUS EMULSION POLYMERIZATION OF AT LEAST 40 PARTS BY WEIGHT AND NOT MORE THAN 90% BY WEIGHT OF THE TOTAL STYRENE MONOMER USED IN PREPARING SAID RESIN, THE TOTAL BUTADIENE MONOMER AND STYRENE MONOMER USED RANGING IN PROPORTION OF STYRENE MONOMER OT BUTADIENE MONOMER OF FROM 70/30 TO 95/5.
Claim 2
Dependent Claim
94 words
A TOUGH, READILY MOLDABLE THERMOPLASTIC RESIN HAVING A HEAT DISTORTION POINT OF AT LEAST 170*F. COMPRISING THE POLYMERIZATE RESULTING FROM THE AQUEOUS EMULSION POLYMERIZATION OF A MIXTURE CONSISTING OF STYRENE MONOMER AND BUTADIENE MONOMER IN THE PRESENCE OF A LATEX OF POLYSTYRENE RESULTING FROM THE AQUEOUS EMULSION POLYMERIZATION OF AT LEAST 40 PARTS BY WEIGHT AND NOT MORE THAN 90% BY WEIGHT OF THE TOTAL STYRENE MONOMER USED IN PREPARING SAID RESIN, THE TOTAL BUTADIENE MONOMER AND STYRENE MONOMER USED RANGING IN PROPORTION OF STYRENE MONOMER OT BUTADIENE MONOMER OF FROM 70/30 TO 95/5.
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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) | 1961-05-19 | 1961-11-18 | 1962-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-19 | 1965-11-18 | 1966-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-19 | 1969-11-18 | 1970-05-20 | $7700.00 | Window Closed / Lapsed |