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SEKINOSU KK

Overview
  • Total Patents
    48
About

SEKINOSU KK has a total of 48 patent applications. Its first patent ever was published in 1988. It filed its patents most often in Japan and China. Its main competitors in its focus markets optics and audio-visual technology are TIANJIN OUFEI PHOTOELECTRIC CO LTD, SIDNEY NEWCOMER HARRY and YOSHITSUGU KEIKI.

Patent filings in countries

World map showing SEKINOSU KKs patent filings in countries
# Country Total Patents
#1 Japan 47
#2 China 1

Patent filings per year

Chart showing SEKINOSU KKs patent filings per year from 1900 to 2020

Focus industries

Focus technologies

Top inventors

# Name Total Patents
#1 Sekine Kumajirou 36
#2 Nakada Yuuki 17
#3 Kobayashi Kenji 11
#4 Shimoda Yoshihisa 8
#5 Yokota Akihiro 5
#6 Matsumoto Susumu 5
#7 Murata Kazuhiko 5
#8 Tamura Shingo 3
#9 Nakada Katsuki 3
#10 Sekine Yasuhiro 2

Latest patents

Publication Filing date Title
JP2007079044A Projection lens unit
JP2006018253A Optical member and its manufacturing method
JP2005181993A Projection lens
JP2006030893A Imaging lens device
JP2006018083A Aspherical mirror member and back projection type video display device using same
JP2005309251A Projection lens
JP2005292396A Projection lens unit
JP2005215473A Projection lens device
JP2005140848A Image pickup lens
JP2004341194A Projection lens unit
JP2004205887A Imaging lens
JP2003195141A Projection lens unit
JP2003140257A Illumination optical system and color image projecting device
JP2001188167A Projection lens device
JP2000333048A Image pickup unit
JP2000298864A Optical pickup and optical part therefor
JP2000081569A Projection lens device
JPH1184235A Projection lens device
JPH10206601A Light reflection preventive panel for crt display
JPH10186117A Optical component and its production