Inventor
HEYN WILLIAM M
US13 patents
⚠️ This page may combine multiple inventors who share the name “HEYN WILLIAM M”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
POLYSTAR PACKAGING INC
7 patentsUS5125528AJun 30, 1992
Container closure, and method for producing same
POLYSTAR PACKAGING INC52 citations95
US6258312B1Jul 10, 2001
Method for producing a container closure
POLYSTAR PACKAGING INC34 citations92
US6033613AMar 7, 2000
Method of molding a peripheral frame with a panel insert
POLYSTAR PACKAGING INC16 citations92
US5085339AFeb 4, 1992
Reclosable container closure
POLYSTAR PACKAGING INC36 citations92
US5273416ADec 28, 1993
Apparatus for making an injection molded frame having a panel insert
POLYSTAR PACKAGING INC15 citations82
US5830398ANov 3, 1998
Method for forming container closure
POLYSTAR PACKAGING INC11 citations73
US5360588ANov 1, 1994
Method of making an injection molded frame having a panel insert
POLYSTAR PACKAGING INC10 citations73
CONTINENTAL GROUP
4 patentsUS4440310AApr 3, 1984
Closure for domed beverage containers and the like
CONTINENTAL GROUP27 citations92
US4407424AOct 4, 1983
Plastic plug type closure for beverage containers
CONTINENTAL GROUP36 citations92
US4318494AMar 9, 1982
Easy opening container with vent means
CONTINENTAL GROUP27 citations81
US4427128AJan 24, 1984
Can and closure therefor
CONTINENTAL GROUP12 citations73