P

Inventor

ISSHIKI ISAO

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

SUMITOMO ELECTRIC INDUSTRIES

15 patents
US5591906AJan 7, 1997

Tire pressure drop detecting device and method

SUMITOMO ELECTRIC INDUSTRIES65 citations95
US4315245AFeb 9, 1982

Optical information reading device

SUMITOMO ELECTRIC INDUSTRIES125 citations95
US7167377B2Jan 23, 2007

Circuit-constituting unit and method of producing the same

SUMITOMO ELECTRIC INDUSTRIES24 citations92
US5629478AMay 13, 1997

Method of and device for detecting tire pressure drop based on angular velocity

SUMITOMO ELECTRIC INDUSTRIES28 citations92
US7046073B2May 16, 2006

Load drive circuit

SUMITOMO ELECTRIC INDUSTRIES12 citations82
US4686483AAug 11, 1987

Digital filter circuit

SUMITOMO ELECTRIC INDUSTRIES21 citations82
US4104616AAug 1, 1978

Hand operated optical character recognition system

SUMITOMO ELECTRIC INDUSTRIES24 citations82
US4355301AOct 19, 1982

Optical character reading system

SUMITOMO ELECTRIC INDUSTRIES25 citations81
US4180800ADec 25, 1979

Character reading system

SUMITOMO ELECTRIC INDUSTRIES24 citations81
US4691330ASep 1, 1987

Duty control circuit for gradually reducing the duty time

SUMITOMO ELECTRIC INDUSTRIES11 citations74
US7075356B2Jul 11, 2006

Charge pump circuit

SUMITOMO ELECTRIC INDUSTRIES9 citations72
US7031129B2Apr 18, 2006

Protection circuit

SUMITOMO ELECTRIC INDUSTRIES7 citations72
US4402087AAug 30, 1983

Binary coding circuit

SUMITOMO ELECTRIC INDUSTRIES6 citations62
US4364023ADec 14, 1982

Optical character reading system

SUMITOMO ELECTRIC INDUSTRIES5 citations60
US4407291AOct 4, 1983

Transcutaneous blood oxygen measuring device

SUMITOMO ELECTRIC INDUSTRIES4 citations58

AUTONETWORKS TECHNOLOGIES LTD

13 patents

SUMITOMO WIRING SYSTEMS

5 patents

SUMITOMO RUBBER IND

1 patent

TOKAI ELECTRIC WIRE

1 patent