Inventor

NIWA KEN

JP2 patents

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

TOKAI RUBBER IND LTD

1 patent

US4882101ANov 21, 1989

Method of producing a reinforced rubber hose by using a plastic mandrel

TOKAI RUBBER IND LTD25 citations84

KOYO SEIKO CO

1 patent

US7311334B2Dec 25, 2007

Shock absorbing type steering device for vehicles and method of producing the same

KOYO SEIKO CO1 citations48