US4552767A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of packaging coffee with carbon dioxide sorbent
Assignee: General Foods Corp
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Filing: 1984-09-27
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Granted: 1985-11-12
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Expires: 2004-09-27
Abstract
Abstract A carbon dioxide sorbent is disclosed which comprises calcium hydroxide at a level of from 70 to 95% by weight based upon the total dry weight of the sorbent, sodium hydroxide, potassium hydroxide or admixture thereof at a level of from 5 to 15% by weight, optionally calcium chloride at a level of from 5 to 15% by weight and less than 1.5% moisture. Also disclosed is a method for packaging coffee utilizing the carbon dioxide sorbent.
Inventors
- 👤 Fouad Z. Saleeb
- 👤 Bary L. Zeller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:15
CPC Classifications
B; B65; B65B; B65B25/00; B65B25/001; A; A23; A23F; A23F5/00; A23F5/10; A23F5/105; B01; B01J; B01J20/00; B01J20/02; B01J20/04; B01J20/041; B01J20/046; B01J2220/00; B01J2220/40; B01J2220/42
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
138 words
A process for packaging roasted coffee which comprises: packaging said coffee in a container by either backflushing roasted coffee in a container with nitrogen or vacuum packaging roasted coffee to remove substantially all of the oxygen present therein; adding to said container containing said coffee a carbon dioxide sorbent, said carbon dioxide sorbent comprising calcium hydroxide at a level of from 70 to 95% by weight based upon the total dry weight of the sorbent and sodium hydroxide, potassium hydroxide or admixture thereof at a level of from 5 to 15% by weight based upon the total dry weight of the sorbent and 1.5% or less water by weight said sorbent being prepared by dry-blending the calcium hydroxide with the sodium hydroxide, potassium hydroxide or admixture to produce a free-flowing material containing sorbent particles less than 1 mm.
Claim 2
Dependent Claim
138 words
A process for packaging roasted coffee which comprises: packaging said coffee in a container by either backflushing roasted coffee in a container with nitrogen or vacuum packaging roasted coffee to remove substantially all of the oxygen present therein; adding to said container containing said coffee a carbon dioxide sorbent, said carbon dioxide sorbent comprising calcium hydroxide at a level of from 70 to 95% by weight based upon the total dry weight of the sorbent and sodium hydroxide, potassium hydroxide or admixture thereof at a level of from 5 to 15% by weight based upon the total dry weight of the sorbent and 1.5% or less water by weight said sorbent being prepared by dry-blending the calcium hydroxide with the sodium hydroxide, potassium hydroxide or admixture to produce a free-flowing material containing sorbent particles less than 1 mm.
Claim 3
Dependent Claim
22 words
The process according to claim 1 wherein said sorbent contains from 5 to 15% sodium hydroxide and from 0% to 0.5% moisture.
Claim 4
Dependent Claim
42 words
The process according to claim 1 wherein said sorbent in said container is separately packaged in a carbon dioxide/water permeable membrane which will allow any water generated to be transferred to said coffee to maintain a constant relative humidity throughout the coffee.
Claim 5
Dependent Claim
36 words
The process according to claim 1 wherein the carbon dioxide sorbent is present in the packaged roasted coffee at a level of from 1 to 10 grams of the sorbent per pound of the packaged coffee.
Claim 6
Dependent Claim
15 words
The process according to claim 1 wherein the roasted coffee is roast and ground coffee.
Claim 7
Dependent Claim
14 words
The process according to claim 1 wherein the roasted coffee is roasted whole beans.
Claim 8
Dependent Claim
18 words
The process according to claim 1 wherein said roasted coffee has an equilibrium relative humidity of approximately 30%.
Claim 9
Dependent Claim
16 words
The process according to claim 7 wherein the roasted coffee contains between 2 to 4% moisture.
Claim 10
Dependent Claim
30 words
The process according to claim 1 wherein said carbon dioxide sorbent additionally contains from 5 to 15% calcium chloride by weight based on the total dry weight of the sorbent.
Claim 11
Dependent Claim
16 words
The process according to claim 9 wherein said sorbent contains from 5 to 10% calcium chloride.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-11-11 | 1989-05-13 | 1989-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-11-11 | 1993-05-13 | 1993-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-11-11 | 1997-05-13 | 1997-11-12 | $7700.00 | Window Closed / Lapsed |