P

Inventor

TAMURA YASUAKI

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

OKI ELECTRIC IND CO LTD

3 patents
US4805977AFeb 21, 1989

Optical coupler for optical direct amplifier

OKI ELECTRIC IND CO LTD132 citations97
US4995696AFeb 26, 1991

Optical amplifier module

OKI ELECTRIC IND CO LTD27 citations92
US5089786AFeb 18, 1992

Optical amplifier

OKI ELECTRIC IND CO LTD18 citations73

NIPPON TELEGRAPH & TELEPHONE

2 patents
US6222967B1Apr 24, 2001

Packaging platform, optical module using the platform, and methods for producing the platform and the module

NIPPON TELEGRAPH & TELEPHONE110 citations96
US5975770ANov 2, 1999

Plastic ferrule for optical connector and method for production thereof

NIPPON TELEGRAPH & TELEPHONE21 citations90

YOKOGAWA ELECTRIC CORP

1 patent
US7853104B2Dec 14, 2010

Bidirectional optical module and optical time domain reflectometer

YOKOGAWA ELECTRIC CORP82 citations93

UEHARA SACHIO

1 patent
US5498867AMar 12, 1996

Wavelength-division multiplex digital optical position sensor

UEHARA SACHIO25 citations82

MITA INDUSTRIAL CO LTD

1 patent
US5223898AJun 29, 1993

Developing apparatus with the following roller closer to the drum than the first roller

MITA INDUSTRIAL CO LTD13 citations71

YAMASHITA YUTO

1 patent
US8744223B2Jun 3, 2014

Array-type photo module

YAMASHITA YUTO4 citations65

TAMURA MINORU

1 patent
US11311821B2Apr 26, 2022

Degassing apparatus for removing dissolved gas from liquids

TAMURA MINORU0 citations49

OHYAMA TAKAHARU

1 patent
US8545111B2Oct 1, 2013

Optical module

OHYAMA TAKAHARU1 citations44