US3217032A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of vinyl esters
Assignee: Kurashiki Rayon Co Ltd
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Filing: 1961-01-16
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Granted: 1965-11-09
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Expires: 1981-01-16
Abstract
No abstract record available.
Inventors
- 👤 Taka Kasao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:11
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/07; C07C17/08; B; B01; B01J; B01J19/00; B01J19/08; B01J19/081; B01J37/00; B01J37/34; C07C67/00; C07C67/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
A PROCESS FOR THE PRODUCTION OF VINYL ESTERS BY THE VINYLATION OF AN ACID SELECTED FROM THE GROUP CONSISTING OF LOWER-ALKYL MONO CARBOXYLIC ACIDS AND HYDROGEN CHLORIDE WHICH COMPRISES THE STEP OF INTERACTING SAID ACID WITH ACETYLENE IN THE PRESENCE OF ACTIVATED CARBON WHICH IS FIRST IRRADIATED WITH HIGH-ENERGY RADIATION BY A DOSE OF 10**4 TO 10**10 R.E.P., AND THEN IMPREGNATED WITH A SALT OF A METAL OF GROUP IIB OF THE PERIODIC TABLE.
Claim 2
Dependent Claim
74 words
A PROCESS FOR THE PRODUCTION OF VINYL ESTERS BY THE VINYLATION OF AN ACID SELECTED FROM THE GROUP CONSISTING OF LOWER-ALKYL MONO CARBOXYLIC ACIDS AND HYDROGEN CHLORIDE WHICH COMPRISES THE STEP OF INTERACTING SAID ACID WITH ACETYLENE IN THE PRESENCE OF ACTIVATED CARBON WHICH IS FIRST IRRADIATED WITH HIGH-ENERGY RADIATION BY A DOSE OF 10**4 TO 10**10 R.E.P., AND THEN IMPREGNATED WITH A SALT OF A METAL OF GROUP IIB OF THE PERIODIC TABLE.
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) | 1968-11-08 | 1969-05-10 | 1969-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-08 | 1973-05-10 | 1973-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-08 | 1977-05-10 | 1977-11-09 | $7700.00 | Window Closed / Lapsed |