US3371077A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of vinyl alkyl ethers and resulting product
Assignee: Monsanto Co
•
Filing: 1958-08-18
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Granted: 1968-02-27
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Expires: 1978-08-18
Abstract
No abstract record available.
Inventors
- 👤 John D Calfee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:48
CPC Classifications
C; C08; C08F; C08F16/00; C08F16/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
THE PROCESS OF POLYMERIZING A VINYL ALKYL ETHER, WHEREIN SAID ALKYL GROUP CONTAINS FROM 1 TO 14 CARBON ATOMS, TO SOLID, HIGH MOLECULAR WEIGHT, CRYSTALLINE POLYMER BY CONTACTING SAID VINYL ALKYL ETHER WITH A CATALYST SELECTED FROM THE GROUP CONSISTING OF ALUMINUM CHLOROFLUORIDES AND ALUMINUM FLUORIDE OBTAINED BY THE FLUORINATION OF AN ALUMINUM HALIDE SELECTED FROM THE GROUP CONSISTING OF ALUMINUM CHLORIDE, ALUMINUM BROMIDE, AND ALUMINUM IODIDE.
Claim 2
Dependent Claim
67 words
THE PROCESS OF POLYMERIZING A VINYL ALKYL ETHER, WHEREIN SAID ALKYL GROUP CONTAINS FROM 1 TO 14 CARBON ATOMS, TO SOLID, HIGH MOLECULAR WEIGHT, CRYSTALLINE POLYMER BY CONTACTING SAID VINYL ALKYL ETHER WITH A CATALYST SELECTED FROM THE GROUP CONSISTING OF ALUMINUM CHLOROFLUORIDES AND ALUMINUM FLUORIDE OBTAINED BY THE FLUORINATION OF AN ALUMINUM HALIDE SELECTED FROM THE GROUP CONSISTING OF ALUMINUM CHLORIDE, ALUMINUM BROMIDE, AND ALUMINUM IODIDE.
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) | 1971-02-26 | 1971-08-28 | 1972-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-26 | 1975-08-28 | 1976-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-26 | 1979-08-28 | 1980-02-27 | $7700.00 | Window Closed / Lapsed |