Inventor

OTSUKA HARUHIKO

JP7 patents

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

NIPPON DENSO CO

3 patents

US5582027ADec 10, 1996

NIPPON PRECISION CIRCUITS

2 patents

US6215370B1Apr 10, 2001

Crystal oscillator circuit with crystal reducing resistance and integrated circuit therefor

NIPPON PRECISION CIRCUITS9 citations72

US6346862B2Feb 12, 2002

Quartz oscillation circuit and quartz oscillation integrated circuit device

NIPPON PRECISION CIRCUITS4 citations61

AG TECHNOLOGY CORP

1 patent

US5549954AAug 27, 1996

Magnetic disc

AG TECHNOLOGY CORP21 citations87

SEIKO NPC CORP

1 patent

US7271619B2Sep 18, 2007

Charge pump circuit reducing noise and charge error and PLL circuit using the same

SEIKO NPC CORP9 citations67