Inventor

KATAGIRI FUJIO

JP4 patents

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

RYOBI LTD

2 patents

US4656690AApr 14, 1987

Fireproof door closer and holder having a solenoid and a toggle mechanism

RYOBI LTD19 citations68

US4598494AJul 8, 1986

Apparatus for closing fireproof doors

RYOBI LTD7 citations68

KATAGIRI FUJIO

1 patent

US8202027B2Jun 19, 2012

Water treatment pad for drilling tool

KATAGIRI FUJIO5 citations55

SHIBUYA COMPANY LTD

1 patent

US7703552B2Apr 27, 2010

Water treatment pad for core drill

SHIBUYA COMPANY LTD4 citations52