3846569 is referenced by 52 patents and cites 7 patents.

A method of making a precharged disposable coffee bag wherein the bag is made from porous, heat sealable paper or the like either from a single web formed into a tube or from two webs of such material wherein the bag is given one seal which is semiannular followed by partial filling of the resultant arcuate pocket with ground coffee and then completion of the bag as caused by a second sealing operation which makes a straight-line seal to form a semicircular bag.

Title
Method of making a disposable precharged coffee bag
Application Number
05/295,473
Publication Number
3846569
Application Date
October 6, 1972
Publication Date
November 5, 1974
Inventor
Kaplan Reuben A
Agent
Hofgren Wegner Allen Stellman & McCord
IPC
B65b 29/02
B65B 29/02
B65B 29/00
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