US3879565A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coffee brewing bag and method
Assignee: General Foods Corp
•
Filing: 1971-10-05
•
Granted: 1975-04-22
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Expires: 1991-10-05
Abstract
Abstract Roasted and ground coffee is packaged in a brewing bag for use in brewing a cup of coffee in the same manner that the ordinary tea bag is used to brew a cup of tea. An effective amount of a defoaming agent such as silicones is added to the coffee to disperse foam generated within the bag and to improve the rate of extraction of the coffee material. A bag volume of from 1.9 to 2.2 times the volume of coffee avoids the necessity of a defoaming agent.
Inventors
- 👤 William J Einstman
- 👤 Warren C Rehman
- 👤 Frank M Plant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:50
CPC Classifications
B; B65; B65D; B65D85/00; B65D85/70; B65D85/804; B65D85/808; A; A23; A23F; A23F5/00; A23F5/10; A23F5/14
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
49 words
A PROCESS FOR MAKING A COFFEE BREWING BAG COMPRISING SPRAYING AN AQUEOUS EMULSION OF DIMETHYLPOLYSILOXANE ONTO THE SURFACE OF ROASTED AND GROUND COFFEE TO OBTAINED DIMETHYLPOLYSILOXANE LEVEL OF FROM 20 TO 1,600 PPM BY WEIGHT OF THE COFFEE AND THEN PACKAGING THE COFFEE IN A FILTER PAPER INFUSION BAG.
Claim 2
Dependent Claim
49 words
A PROCESS FOR MAKING A COFFEE BREWING BAG COMPRISING SPRAYING AN AQUEOUS EMULSION OF DIMETHYLPOLYSILOXANE ONTO THE SURFACE OF ROASTED AND GROUND COFFEE TO OBTAINED DIMETHYLPOLYSILOXANE LEVEL OF FROM 20 TO 1,600 PPM BY WEIGHT OF THE COFFEE AND THEN PACKAGING THE COFFEE IN A FILTER PAPER INFUSION BAG.
Claim 3
Dependent Claim
50 words
A process for making a coffee brewing bag comprising spraying an aqueous emulsion of dimethylpolysiloxane onto the surface of roasted and ground coffee to obtain a dimethylpolysiloxane level of from 20 to 1,600 ppm by weight of the coffee and then packaging the coffee in a filter paper infusion bag.
Claim 4
Dependent Claim
50 words
A process for making a coffee brewing bag comprising spraying an aqueous emulsion of dimethylpolysiloxane onto the surface of roasted and ground coffee to obtain a dimethylpolysiloxane level of from 20 to 1,600 ppm by weight of the coffee and then packaging the coffee in a filter paper infusion bag.
References Cited (Backward Citations)
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Cited
US3420675A
Cited
US3511666A
Cited
US3518344A
Cited
US3607299A
Cited
US3640727A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-21 | 1978-10-21 | 1979-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-21 | 1982-10-21 | 1983-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-21 | 1986-10-21 | 1987-04-22 | $7700.00 | Window Closed / Lapsed |