Inventor
KREAGER WILLIAM D
US7 patents
Patents
7 patentsUS4517790AMay 21, 1985
Apparatus and method for ultrasonic sealing of packages
FRITO LAY INC189 citations97
US4373982AFeb 15, 1983
Ultrasonic sealing apparatus
FRITO LAY INC66 citations95
US4534818AAug 13, 1985
Method and apparatus for ultrasonic sealing
FRITO LAY INC116 citations94
US4726171AFeb 23, 1988
Method and apparatus for applying article to inside of bag
FRITO LAY INC66 citations91
US4555289ANov 26, 1985
Method and apparatus forming fin-type back seal using cohesive sealants without externally applied heat
FRITO LAY INC8 citations72
US4517787AMay 21, 1985
Method and apparatus for sealing bags
FRITO LAY INC14 citations72
US4455810AJun 26, 1984
Method and apparatus for detecting possibly defectively-sealed bags
FRITO LAY INC17 citations68