Inventor
LEATHERMAN DENNIS D
US11 patents
Patents
11 patentsUS4861644AAug 29, 1989
Printed microporous material
PPG INDUSTRIES INC224 citations99
US4892779AJan 9, 1990
Multilayer article of microporous and substantially nonporous materials
PPG INDUSTRIES INC143 citations97
US5032450AJul 16, 1991
Microporous material having a coating of hydrophobic polymer
PPG INDUSTRIES INC161 citations96
US4877679AOct 31, 1989
Multilayer article of microporous and porous materials
PPG INDUSTRIES INC136 citations96
US4833172AMay 23, 1989
Stretched microporous material
PPG INDUSTRIES INC239 citations96
US4937115AJun 26, 1990
Bacteria impermeable, gas permeable package
PPG INDUSTRIES INC122 citations95
US5047283ASep 10, 1991
Electrically conductive article
PPG INDUSTRIES INC58 citations94
US5114438AMay 19, 1992
Abrasive article
PPG INDUSTRIES INC118 citations92
US5035886AJul 30, 1991
Active agent delivery device
PPG INDUSTRIES INC41 citations91
US4959208ASep 25, 1990
Active agent delivery device
PPG INDUSTRIES INC47 citations90
US4927802AMay 22, 1990
Pressure-sensitive multi-part record unit
PPG INDUSTRIES INC13 citations73