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NAKAYAMA KENJI

Overview
  • Total Patents
    32
About

NAKAYAMA KENJI has a total of 32 patent applications. Its first patent ever was published in 1993. It filed its patents most often in Japan and United States. Its main competitors in its focus markets optics, audio-visual technology and environmental technology are NAMUGA CO LTD, MIZUSHIMA TETSURO and LASER LIGHT ENGINES INC.

Patent filings in countries

World map showing NAKAYAMA KENJIs patent filings in countries
# Country Total Patents
#1 Japan 22
#2 United States 10

Patent filings per year

Chart showing NAKAYAMA KENJIs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Nakayama Kenji 32
#2 Itoh Tatsuo 6
#3 Mizushima Tetsuro 4
#4 Akamatsu Hideyuki 4
#5 Yamamoto Kazuhisa 3
#6 Furuya Hiroyuki 3
#7 Nagai Tomohito 2
#8 Kadowaki Shinichi 2
#9 Shikii Shinichi 1
#10 Nagata Takayuki 1

Latest patents

Publication Filing date Title
US2012044467A1 Projector with illumination control based on fixation degree
US2012044280A1 Wavelength conversion device and image display apparatus using same
US2011043768A1 Image display apparatus which reduces speckle noise and which operates with low power consumption
US2010039585A1 Planar illumination device, and image display device
US2009261652A1 Bicycle electrical wiring unit
JP2004124659A Box urinal
JP2001348893A Retaining wall structure
JP2001323486A Retaining wall structure
JP2001295302A Retaining wall structure and retaining-wall construction method
JP2001115534A Underground pipe embedding construction
JP2001115541A Side ditch
JP2001073444A Drain pipe for road side
JP2001049732A Opening/closing type pit cover
JP2000336678A Concrete molding connecting structure
JP2000328508A Boundary block between sidewalk and driveway
JP2000303546A Draining structure of pavement
JPH11229410A Construction of cantilever beam-form retaining wall and formation of vertical slab therefor
JPH11158892A Retaining wall structure and construction thereof
JPH1171773A Retaining wall
JPH10219713A Earth retaining block and structure and construction method thereof