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MARUMI KOKI KK

Overview
  • Total Patents
    44
  • GoodIP Patent Rank
    151,641
  • Filing trend
    ⇩ 80.0%
About

MARUMI KOKI KK has a total of 44 patent applications. It decreased the IP activity by 80.0%. Its first patent ever was published in 1999. It filed its patents most often in Japan. Its main competitors in its focus markets optics, surface technology and coating and audio-visual technology are NITTOH INC, LDT LASER DISPLAY TECHNOLOGY GMBH and OPTECH KK.

Patent filings in countries

World map showing MARUMI KOKI KKs patent filings in countries
# Country Total Patents
#1 Japan 44

Patent filings per year

Chart showing MARUMI KOKI KKs patent filings per year from 1900 to 2020

Focus technologies

Top inventors

# Name Total Patents
#1 Karasawa Yutaka 37
#2 Takahashi Kaoru 11
#3 Sato Kazuhiro 3
#4 Shibata Masatoshi 1

Latest patents

Publication Filing date Title
JP2019191280A Rotary frame structure of filter
JP2019117311A Nd filter and manufacturing method therefor
JP2019086626A filter
JP2019086583A filter
JP2019086584A filter
JP2019086585A filter
JP2020154002A filter
JP2018105934A filter
JP2018045181A Nd filter and method for producing the same
JP2017146516A One-touch filter frame
JP2015143767A Holding mechanism of filter lens in filter frame
JP2015018164A Filter lens holding mechanism of filter frame
JP2013210681A Retention mechanism of filter lens in filter frame
JP2014202889A Filter frame for digital camera
JP2014164093A Camera filter frame
JP2014164092A Lens hood
JP2014098831A Multifunctional filter frame for digital cameras
JP2014074820A Lens cap composed of elastomer and provided with buffer function
JP2014056198A Elastomer filter frame having buffer function
JP2014032223A Filter detachable mechanism for digital camera