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SUMITA OPTICAL GLASS

Overview
  • Total Patents
    283
  • GoodIP Patent Rank
    19,278
  • Filing trend
    ⇩ 13.0%
About

SUMITA OPTICAL GLASS has a total of 283 patent applications. It decreased the IP activity by 13.0%. Its first patent ever was published in 1974. It filed its patents most often in Japan, United States and EPO (European Patent Office). Its main competitors in its focus markets materials and metallurgy, optics and machines are CDGM OPTICAL GLASS CO LTD, CDGM GLASS CO LTD and ISUZU SEIKO GLASS KK.

Patent filings per year

Chart showing SUMITA OPTICAL GLASSs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Nagahama Shinobu 92
#2 Sawanobori Shigeto 56
#3 Otsuka Masaaki 37
#4 Sawanobori Naruhito 36
#5 Yamazaki Masaaki 36
#6 Yamamoto Yoshinori 34
#7 Tsuchiya Koichi 30
#8 Tezuka Tatsuya 25
#9 Watabe Hiromi 23
#10 Takaku Hideaki 22

Latest patents

Publication Filing date Title
WO2021065456A1 X-ray shielding glass and glass component
JP2020158363A Glass and crystallized glass
JP2020105058A Optical glass, precise press molding preform and optical element
JP2020083722A Transparent crystallized glass, and method for producing transparent crystallized glass
WO2020090049A1 Endoscope
JP2020034658A Relay optics for rigid endoscope
JP2020030921A Light source system and light source device
JP2019178047A Optical glass, preform for precision press-forming and optical element
CN111758062A Optical fiber bundle, endoscope body for endoscope, and endoscope
JP2019151524A Optical glass, preform for precision press molding, and optical element
JP2019151493A Low dispersion glass
JP2019056950A Inspection apparatus and inspection method
JP2019045452A Inspection device and method for inspection
JP2019043814A Glass for near-infrared absorption filter
JP2019038711A Precursor glass of lithium phosphorous complex oxide and method for producing the same, method for producing precursor crystallized glass of lithium phosphorous complex oxide, and lithium phosphorous complex oxide powder and method for producing the same
JP2018177561A Optical glass and optical element
JP2018175024A Image guide device and endoscope
JP2017155215A Halo phosphate fluophor and manufacturing method therefor
JP2018097031A Optical fiber bundle
JP2018070427A Optical glass, preform for precision press-molding and optical element