Patent US4237288A successfully refreshed from Google Patents.
US4237288A
Expired / Lapsed
US
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Decaffeination of fatty materials
Assignee: Nestec SA
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Filing: 1979-05-17
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Granted: 1980-12-02
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Expires: 1999-05-17
Abstract
Abstract A process is disclosed wherein the decaffeination of solutions of caffeine in fatty media is effected with hydrophilic, phenol/formaldehyde polymeric resins having phenolic functional groups. In particular, the solutions are contacted with resin to effect decaffeination and the solvent medium is recovered, whereas the exhausted resin containing adherent caffeine and any non-caffeine solids may be regenerated for re-use. Other features of the invention are described in the specification.
Inventors
- 👤 Dean F. Rushmore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:45
CPC Classifications
A; A23; A23F; A23F5/00; A23F5/20; A23F5/206; A23F5/22; A23F5/223
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
42 words
A process for the removal of caffeine from a soultion of caffeine in a fatty medium which comprises contacting the solution with a hydrophilic, phenol/formaldehyde polymeric resin having phenolic functional groups and separating the resin from solution having a reduced caffeine content.
Claim 2
Dependent Claim
42 words
A process for the removal of caffeine from a soultion of caffeine in a fatty medium which comprises contacting the solution with a hydrophilic, phenol/formaldehyde polymeric resin having phenolic functional groups and separating the resin from solution having a reduced caffeine content.
Claim 3
Dependent Claim
20 words
The process of claim 1, wherein the contacting is effected at a temperature of from 60° C. to 75° C.
Claim 4
Dependent Claim
28 words
The process of claim 1 or claim 2, wherein the fatty material is olive oil, corn oil, soybean oil, safflower oil, coffee oil, peanut oil, lard or triolein.
Claim 5
Dependent Claim
22 words
The process of claim 1 or claim 2, wherein the solution of caffeine is coffee oil expressed from roasted and ground coffee.
References Cited (Backward Citations)
SU145714A1
Cited
US4160042A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-12-02 | 1984-06-02 | 1984-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-02 | 1988-06-02 | 1988-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-02 | 1992-06-02 | 1992-12-02 | $7700.00 | Window Closed / Lapsed |