Patent US2990387A successfully refreshed from Google Patents.
US2990387A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Styrene resins
Assignee: American Marietta Co
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Filing: 1958-09-26
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Granted: 1961-06-27
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Expires: 1978-09-26
Abstract
No abstract record available.
Inventors
- 👤 Bobalek Edward George
- 👤 Edward L Brazet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:51
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/14; C08G59/1433; C08G59/1438; C08G59/1455; C08G59/1461; C08F; C08F242/00; C08L; C08L63/00; C08F212/00; C08F212/02; C08F212/04; C08F212/06; C08F212/08; C08L25/00; C08L25/02; C08L25/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A PROCESS FOR THE PRODUCTION OF NON-GELLED INTERPOLYMER OF A STYRENE COMPOUND SELECTED FROM THE GROUP CONSISTING OF STYRENE AND SUBSTITUTION PRODUCTS THEREOF WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF DRYING OILS AND DRYING OIL FATTY ACID MODIFIED TO INCLUDE AT LEAST 10% BY WEIGHT OF AN EPOXY RESIN COMPRISING HEATREACTING AT ELEVATED TEMPERATURE AND IN THE LIQUID PHASE FROM 40 TO 85% BY WEIGHT OF SAID INTERPOLYMER WITH FROM 15 TO 60% BY WEIGHT OF SAID EPOXY RESIN, AND CONTINUING SAID HEAT-REACTION UNTIL AT LEAST 10% BY WEIGHT OF SAID EPOXY RESIN HAS BEEN COMBINED WITH SAID INTERPOLYMER.
Claim 2
Dependent Claim
101 words
A PROCESS FOR THE PRODUCTION OF NON-GELLED INTERPOLYMER OF A STYRENE COMPOUND SELECTED FROM THE GROUP CONSISTING OF STYRENE AND SUBSTITUTION PRODUCTS THEREOF WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF DRYING OILS AND DRYING OIL FATTY ACID MODIFIED TO INCLUDE AT LEAST 10% BY WEIGHT OF AN EPOXY RESIN COMPRISING HEATREACTING AT ELEVATED TEMPERATURE AND IN THE LIQUID PHASE FROM 40 TO 85% BY WEIGHT OF SAID INTERPOLYMER WITH FROM 15 TO 60% BY WEIGHT OF SAID EPOXY RESIN, AND CONTINUING SAID HEAT-REACTION UNTIL AT LEAST 10% BY WEIGHT OF SAID EPOXY RESIN HAS BEEN COMBINED WITH SAID INTERPOLYMER.
References Cited (Backward Citations)
US2596737A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-26 | 1964-12-26 | 1965-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-26 | 1968-12-26 | 1969-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-26 | 1972-12-26 | 1973-06-27 | $7700.00 | Window Closed / Lapsed |