US3242244A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extrusion of epoxy resin
Assignee: Union Oil Company of California
•
Filing: 1964-05-11
•
Granted: 1966-03-22
•
Expires: 1984-05-11
Abstract
No abstract record available.
Inventors
- 👤 George P Maly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:07
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; D; D01; D01F; D01F6/00; D01F6/58; D01F6/66
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
A METHOD FOR FORMING EXTRUDED SHAPES OF EPOXY RESINS HAVING THICKNESSES GREATER THAN ABOUT 0.001 INCH WHICH ARE CURED BY CONTACTING OF THE RESIN WITH GASEOUS EPOXY CURING AGENTS SELECTED FROM THE CLASS CONSISTING OF HALOGENS, HYDROGEN HALIDES, BORON HALIDES, SILICON HALIDES AND NITROGEN OXIDES WHICH COMPRISES: (1) ADMIXING AN EXTRUDABLE MASS COMPRISING AN EPOXY PREPOLYMER WITH AN AMOUNT FROM 0.1 TO 25.0 WEIGHT PERCENT OF A COMPLEXING AGENT WHICH COMPLEXES WITH SAID GASEOUS EPOXY CURING AGENTS BY DONATING A PAIR OF ELECTRONS THERETO TO FORM A COORDINATE COVALENT BOND WITH SAID GASEOUS EPOXY CURING AGENTS; (2) EXTRUDING THE RESULTING MIXTURE THROUGH A SHAPING DIE TO FORM SAID EXTRUDED SHAPE; AND (3) CONTACTING SAID EXTRUDED SHAPE WITH SAID GASEOUS CURING AGENT TO THEREBY CURE HARDEN THE ENTIRE THICKNESS OF SAID EXTRUDED SHAPE OF SAID EPOXY PREPOLYMER.
Claim 2
Independent Claim
136 words
A METHOD FOR FORMING EXTRUDED SHAPES OF EPOXY RESINS HAVING THICKNESSES GREATER THAN ABOUT 0.001 INCH WHICH ARE CURED BY CONTACTING OF THE RESIN WITH GASEOUS EPOXY CURING AGENTS SELECTED FROM THE CLASS CONSISTING OF HALOGENS, HYDROGEN HALIDES, BORON HALIDES, SILICON HALIDES AND NITROGEN OXIDES WHICH COMPRISES: (1) ADMIXING AN EXTRUDABLE MASS COMPRISING AN EPOXY PREPOLYMER WITH AN AMOUNT FROM 0.1 TO 25.0 WEIGHT PERCENT OF A COMPLEXING AGENT WHICH COMPLEXES WITH SAID GASEOUS EPOXY CURING AGENTS BY DONATING A PAIR OF ELECTRONS THERETO TO FORM A COORDINATE COVALENT BOND WITH SAID GASEOUS EPOXY CURING AGENTS; (2) EXTRUDING THE RESULTING MIXTURE THROUGH A SHAPING DIE TO FORM SAID EXTRUDED SHAPE; AND (3) CONTACTING SAID EXTRUDED SHAPE WITH SAID GASEOUS CURING AGENT TO THEREBY CURE HARDEN THE ENTIRE THICKNESS OF SAID EXTRUDED SHAPE OF SAID EPOXY PREPOLYMER.
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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) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |