P

Inventor

KOYAMA ISAO

JP11 patents
⚠️ This page may combine multiple inventors who share the name “KOYAMA ISAO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

CITIZEN WATCH CO LTD

4 patents
US4597228AJul 1, 1986

Vacuum suction device

CITIZEN WATCH CO LTD80 citations95
US4234811ANov 18, 1980

Supporting structure for a thickness-shear type crystal oscillator for watches

CITIZEN WATCH CO LTD16 citations72
US3988621AOct 26, 1976

Supporting structure for a thickness-shear type quartz oscillator

CITIZEN WATCH CO LTD10 citations71
US4079281AMar 14, 1978

Shape, AT-cut crystal oscillator

CITIZEN WATCH CO LTD3 citations61

WAKO PURE CHEM IND LTD

2 patents
US5814472ASep 29, 1998

Measurement of LDL-cholesterol

WAKO PURE CHEM IND LTD43 citations91
US5925534AJul 20, 1999

Method for measuring LDL-cholesterol

WAKO PURE CHEM IND LTD35 citations90

MITSUBOSHI BELTING LTD

1 patent
US6102823AAug 15, 2000

Toothed power transmission belt

MITSUBOSHI BELTING LTD29 citations89

HITACHI LTD

1 patent
US5067419ANov 26, 1991

Low nox boiler

HITACHI LTD27 citations89

FUKUHARA NEEDLE CO LTD

1 patent
US6298692B1Oct 9, 2001

Knitting instrumentalities for a knitting machine and method of forming same

FUKUHARA NEEDLE CO LTD24 citations87

KOYAMA ISAO

1 patent
US8130998B2Mar 6, 2012

Miniature speaker device and television set

KOYAMA ISAO2 citations55

ITAI TOMOKAZU

1 patent
US8158375B2Apr 17, 2012

Polymer and method of measuring cholesterol therewith

ITAI TOMOKAZU0 citations22