Inventor

MAEZAWA KEIJI

3 patents

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

MAEZAWA KASEI KOGYO KK

1 patent

US4241897ADec 30, 1980

Butterfly valve

MAEZAWA KASEI KOGYO KK38 citations84

MAEZAWA KOGYO

1 patent

US4080982AMar 28, 1978

Sleeve valve

MAEZAWA KOGYO40 citations84

CALSONIC KANSEI CORP

1 patent

US7258159B2Aug 21, 2007

Heat exchanger

CALSONIC KANSEI CORP2 citations59