KATAYAMA RYUICHI

Overview

Total Patents

17

About

KATAYAMA RYUICHI has a total of 17 patent applications. Its first patent ever was published in 2004. It filed its patents most often in United States. Its main competitors in its focus markets audio-visual technology, optics and semiconductors are STORAGE TECHNOLOGY PARTNERS, LEE WAI HON and RAITOKU KAGI KOFUN YUGENKOSHI.

Map
Trends
Similars
Markets
Inventors
List

Patent filings in countries

World map showing KATAYAMA RYUICHIs patent filings in countries

#	Country	Total Patents
#1	United States	17

Patent filings per year

Chart showing KATAYAMA RYUICHIs patent filings per year from 1900 to 2020

Similar Companies

STORAGE TECHNOLOGY PARTNERS 98% similarity

LEE WAI HON 98% similarity

RAITOKU KAGI KOFUN YUGENKOSHI 97% similarity

RITEK CORP 97% similarity

MINEMURA HIROYUKI 97% similarity

CASE THEODORE WILLARD 97% similarity

WESTERN DIGITAL (FREMONT) LLC 96% similarity

OPTIDISC INT LTD 96% similarity

NAKAHARA HIRONORI 96% similarity

HOETRON INC 96% similarity

Focus industries

#	Industry
#1	Audio-visual technology
#2	Optics
#3	Semiconductors

Focus technologies

#	Technology
#1	Special information storage
#2	Semiconductor devices
#3	Optical systems
#4	Nonlinear optics
#5	Holographic processes
#6	Cameras

Top inventors

#	Name	Total Patents
#1	Katayama Ryuichi	17

Latest patents

Publication	Filing date	Title
US2010085495A1	2008-03-05	Optical head device and optical information recording/reproducing device
US2010085860A1	2008-03-04	Optical head device, and optical information recording/reproducing device and optical information recording/reproducing method using the same
US2010019126A1	2008-02-13	Optical head device, optical information recording/reproducing device, and optical information recording/reproducing method thereof
US2007263518A1	2005-12-13	Optical Head Apparatus and Optical Information Recording/Reproducing Apparatus With the Same