P

Inventor

MARSHALL WILLIAM P

US4 patents
⚠️ This page may combine multiple inventors who share the name “MARSHALL WILLIAM P”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

PPG INDUSTRIES INC

3 patents
US4933307AJun 12, 1990

Silica-rich porous substrates with reduced tendencies for breaking or cracking

PPG INDUSTRIES INC64 citations93
US4842620AJun 27, 1989

Process of gas enrichment with porous siliceous-containing material

PPG INDUSTRIES INC42 citations89
US4941904AJul 17, 1990

Method and apparatus for forming hollow fibers

PPG INDUSTRIES INC18 citations72

LEISURE TIME PRODUCTS INC

1 patent
USD268921SMay 10, 1983

Mobile home

LEISURE TIME PRODUCTS INC11 citations68