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YAMATOYA SHOKAI

Overview
  • Total Patents
    254
About

YAMATOYA SHOKAI has a total of 254 patent applications. Its first patent ever was published in 1974. It filed its patents most often in Japan, United States and China. Its main competitors in its focus markets audio-visual technology, optics and surface technology and coating are ASIA TECH IMAGE INC, LASER IMAGING SYSTEMS GMBH & C and ITEK COLOUR GRAPHICS LTD.

Patent filings per year

Chart showing YAMATOYA SHOKAIs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Numakura Takashi 194
#2 Numakura Iwao 115
#3 Okamoto Kunio 55
#4 Tsukada Noriaki 33
#5 Kitazawa Susumu 32
#6 Yoshida Youichi 24
#7 Piitaa Furanku Mooritsutsu 13
#8 Shimada Yoshio 12
#9 Ono Kaoru 10
#10 Oodoko Chiyuusaku 7

Latest patents

Publication Filing date Title
JP2013147624A Process liquid and processing method for improving adhesion between copper and copper alloy and organic film
JP2011031229A Method for treating heavy metal in seawater
JP2004218021A Surface treatment agent for microetching copper and copper alloy, and roughening treatment method for surface of copper and copper alloy
JP2002322577A Soft etching agent for copper-cladded laminated board
JP2002266088A Soft etching agent for copper clad laminate
JP2001130986A Copper plated ceramic board, peltier element using the same and method for producing copper plated ceramic board
JP2001277463A SETTING METHOD FOR DOT AREA RATIO (c, m, y, bk) FOR RESPECTIVE COLOR PLATES TO MANUFACTURE FOUR COLOR DOT PRINTED IMAGE, WHICH IS EXCELLENT IN COLOR-REPRODUCIBILITY OF COLOR ORIGINAL
JP2000293679A Ram type system lsi for image gradation conversion
JP2000270219A System lsi for converting gradation of rom type image
JP2000134485A Processing method for image information of color document information at time of production of color print image
JPH11256343A Recovering method of metal form electroless plating waste liquid
JPH1188694A Image-forming device
JPH1188695A Image-forming device
JPH10330969A Etchant for etching resist
JPH10204659A Etchant for etching resist
US5841897A Method for the tonal control or adjustment of reproduced color image and picture producing system making use of said method
KR0164030B1 Color scanner
CN1146563A Colour scanner
JPH0926663A Image forming device
JPH0927918A Method and device for transmitting color image