Inventor
SHIMIZU SHUMPEI
JP8 patents
⚠️ This page may combine multiple inventors who share the name “SHIMIZU SHUMPEI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TAMA CHEMICALS CO LTD
4 patentsUS4572769AFeb 25, 1986
Method of manufacturing tetramethyl ammonium hydroxide
TAMA CHEMICALS CO LTD38 citations91
US5545309AAug 13, 1996
Method of processing organic quaternary ammonium hydroxide-containing waste liquid
TAMA CHEMICALS CO LTD18 citations80
US5439564AAug 8, 1995
Method of processing organic quaternary ammonium hydroxide-containing waste liquid
TAMA CHEMICALS CO LTD19 citations80
US4892625AJan 9, 1990
Method for producing high purity chemicals
TAMA CHEMICALS CO LTD14 citations71
TOSHIBA KK
2 patentsUS6426294B1Jul 30, 2002
Copper-based metal polishing composition, method for manufacturing a semiconductor device, polishing composition, aluminum-based metal polishing composition, and tungsten-based metal polishing composition
TOSHIBA KK29 citations92
US6861010B2Mar 1, 2005
Copper-based metal polishing composition, method for manufacturing a semiconductor device, polishing composition, aluminum-based metal polishing composition, and tungsten-based metal polishing composition
TOSHIBA KK9 citations73