US3144418A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of epoxides
Assignee: Union Carbide Corp
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Filing: 1959-08-17
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Granted: 1964-08-11
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Expires: 1979-08-17
Abstract
No abstract record available.
Inventors
- 👤 Fred N Hill
- 👤 John T Fitzpatrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:00
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/26; C08G65/2642; C08G65/2645; C08G65/266
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A PROCESS FOR POLYMERIZING A SATUARTED VICINAL EPOXY HYDROCARBON HAVING A SINGLE VICINAL EPOXY GROUP AND CONTAINING FROM 2 TO 4 CARBON ATOMS WHICH COMPRISES CONTACTING SAID VICINAL EPXOY HYDROCARBON WITH A CATALYTICALLY SIGNIFICANT QUANTITY OF A CATALYST SELECTED FROM THE GROUP CONSISTING OF ZINC OXALATE HYDRATE, CADMIUM PHTHALATE, ZINC MALEATE, CADMIUM MALEATE AND CERIUM OXALATE, AT AN ELEVATED TEMPERATURE FRO A PERIOD OF TIME SUFFICIENT TO PRODUCE A SOLID POLYMER.
Claim 2
Dependent Claim
71 words
A PROCESS FOR POLYMERIZING A SATUARTED VICINAL EPOXY HYDROCARBON HAVING A SINGLE VICINAL EPOXY GROUP AND CONTAINING FROM 2 TO 4 CARBON ATOMS WHICH COMPRISES CONTACTING SAID VICINAL EPXOY HYDROCARBON WITH A CATALYTICALLY SIGNIFICANT QUANTITY OF A CATALYST SELECTED FROM THE GROUP CONSISTING OF ZINC OXALATE HYDRATE, CADMIUM PHTHALATE, ZINC MALEATE, CADMIUM MALEATE AND CERIUM OXALATE, AT AN ELEVATED TEMPERATURE FRO A PERIOD OF TIME SUFFICIENT TO PRODUCE A SOLID POLYMER.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-11 | 1968-02-10 | 1968-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-11 | 1972-02-10 | 1972-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-11 | 1976-02-10 | 1976-08-11 | $7700.00 | Window Closed / Lapsed |