US3227778A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hardened shaped articles and method of making the same
Assignee: Reichhold Chemicals Inc
•
Filing: 1960-09-15
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Granted: 1966-01-04
•
Expires: 1980-09-15
Abstract
No abstract record available.
Inventors
- 👤 Delius Hermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:40
CPC Classifications
C; C09; C09D; C09D167/00; C09D167/06; C08; C08F; C08F299/00; C08F299/02; C08F299/026; C08L; C08L67/00; C09D175/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
80 words
A PROCESS FOR THE PREPARATION OF CURED MOLDED OBJECTS FROM A POLYMERIZABLE MOLDING MIXTURE CONTAINING AS COPOLYMERIZABLE COMPONENTS (1) AN UNSATURATED GLYCOLDICARBOXYLIC ACID POLYESTER WHICH IS SOLID AT ROOM TEMPERATURE, AND (2) A NITROGEN CONTAINING COMPOUND WHICH IS SOLID AT ROOM TEMPERATURE, SAID NITROGEN COMPOUND BEING SELECTED FROM A GROUP CONSISTING OF TOLUYLENE DI(ALLYL URETHANE), TOLUYLENE DI(METHYLALLYL URETHANE) AND TOLUYLENE-MONOISOCYANATE ALLYL URETHANE, WHICH PROCESS COMPRISES COPOLYMERIZING SAID COMPONENTS IN THE PRESENCE OF A POLYMERIZATION CATALYST UNDER THE INFLUENCE OF HEAT.
References Cited (Backward Citations)
CA541422A
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US2326287A
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DE895648C
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US2443741A
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US2612492A
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US2468713A
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US2647884A
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US2598664A
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US2806835A
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US2915493A
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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) | 1969-01-03 | 1969-07-05 | 1970-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-03 | 1973-07-05 | 1974-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-03 | 1977-07-05 | 1978-01-04 | $7700.00 | Window Closed / Lapsed |