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PURE RETSUKUSU KK

Overview
  • Total Patents
    12
About

PURE RETSUKUSU KK has a total of 12 patent applications. Its first patent ever was published in 1989. It filed its patents most often in Japan. Its main competitors in its focus markets semiconductors, basic materials chemistry and chemical engineering are FREER ERIK M, TECHNIC FRANCE and MEMC KK.

Patent filings in countries

World map showing PURE RETSUKUSU KKs patent filings in countries
# Country Total Patents
#1 Japan 12

Patent filings per year

Chart showing PURE RETSUKUSU KKs patent filings per year from 1900 to 2020

Focus technologies

Top inventors

# Name Total Patents
#1 Muraoka Hisashi 12
#2 Nadahara Souichi 2
#3 Tomita Hiroshi 2
#4 Kobayashi Norio 2
#5 Shimazaki Ayako 1
#6 Matsuo Hideyasu 1
#7 Shiotani Hironori 1
#8 Fukazawa Yuji 1
#9 Ota Yoshiharu 1
#10 Nozaki Tadashi 1

Latest patents

Publication Filing date Title
JPH10277364A Gad cleaning method and gas cleaning device
JPH10284453A Method for washing inside of semiconductor substrate
JPH10242099A Method and apparatus for cleaning inside of semiconductor substrate
JPH10123069A Multiple simultaneous processing method for semiconductor silicon sample radioactivation analysis
JPH0964006A Method for evaluating cleaning effect of semiconductor surface
JPH08264498A Silicon wafer cleaning method
JPH0870025A Method for preparing standard sample for surface analysis
JPH07149930A Treating method for wafer and assessing method for cleanness of environmental atmosphere using wafer treated thereby
JPH07142436A Cleaning liquid and cleaning method for silicon wafer
JPH0724246A Device to remove harmful chemical material in atmosphere
JPH06174615A Sample plate for analysis
JPH0393229A Purification of semiconductor wafer