Inventor
GROETZINGER JOHN K
US6 patents
⚠️ This page may combine multiple inventors who share the name “GROETZINGER JOHN K”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
PPG INDUSTRIES INC
5 patentsUS4969942ANov 13, 1990
Glass melter exhaust duct cleaning method and apparatus
PPG INDUSTRIES INC46 citations91
US4529428AJul 16, 1985
Method and apparatus for feeding an ablation liquefaction process
PPG INDUSTRIES INC22 citations79
US4496387AJan 29, 1985
Transition between batch preheating and liquefying stages apparatus
PPG INDUSTRIES INC13 citations73
US4836775AJun 6, 1989
Air cooled rotary kiln collar
PPG INDUSTRIES INC15 citations72
US4707175ANov 17, 1987
Method of preheating pulverulent batch material
PPG INDUSTRIES INC3 citations61