Patent US3393231A successfully refreshed from Google Patents.
US3393231A
Expired / Lapsed
US
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Preparation of norbornane esters and polyhydric alcohols
Assignee: Eastman Kodak Co
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Filing: 1965-04-27
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Granted: 1968-07-16
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Expires: 1985-04-27
Abstract
No abstract record available.
Inventors
- 👤 Jan W H Faber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:23
CPC Classifications
C; C07; C07C; C07C35/00; C07C35/22; C07C35/23; C07C35/28; C07C35/29
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
98 words
THE PROCESS OF PREPARING LOWER FATTY ACID ESTERS OF NORBORNANEDIOLS WHICH COMPRISES MIXING THE FOLLOWING REACTANTS: (A) A COMPOUND SELECTED FROM THE GROUP CONSISTING OF BICYCLO(2.2.1)HEPTADIENE AND BICYCLO(2.2.1)HEPT-2ENE-5-OL ACYLATE, WHEREIN SAID ACYL GROUP IS DERIVED FROM LOWER FATTY ACIDS HAVING 1 TO 4 CARBON ATOMS, (B) A LOWER FATTY ACID CONTAINING FROM 1 TO 4 CARBON ATOMS, AND (C) WATER IN A CONCENTRATIN OF 1:5 TO 1:20 BASED ON THE WEIGHT OF REACTANT (A); HEATING SAID REACTANTS AT A TEMPERATURE OF AT LEAST 50*C. TO FORM NORBORNANEDIOL ACYLATES, AND CATALYZING THE REACTIONS WITH AN ACIDIC ION EXCHANGE RESIN.
References Cited (Backward Citations)
US2063162A
Cited
US2678332A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-16 | 1972-01-15 | 1972-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-16 | 1976-01-15 | 1976-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-16 | 1980-01-15 | 1980-07-16 | $7700.00 | Window Closed / Lapsed |