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SAKAI YOSHIKAZU

Overview
  • Total Patents
    17
About

SAKAI YOSHIKAZU has a total of 17 patent applications. Its first patent ever was published in 1995. It filed its patents most often in Japan. Its main competitors in its focus markets optics are MARUMAN OPTICAL KK, J R L and 21 KK.

Patent filings in countries

World map showing SAKAI YOSHIKAZUs patent filings in countries
# Country Total Patents
#1 Japan 17

Patent filings per year

Chart showing SAKAI YOSHIKAZUs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Optics

Focus technologies

# Technology
#1 Spectacles

Top inventors

# Name Total Patents
#1 Sakai Yoshikazu 15
#2 Sakai Yukimi 2
#3 Takashima Masayuki 1

Latest patents

Publication Filing date Title
JP2014143495A Piezoelectric speaker
JP2012138054A Holiday display system, business model system using the same
JP2011247069A Water conservation system
JP2011133628A Spectacles
JP2010091959A Grooved lens assembly and thread material assembly for grooved lens
JP2009276636A Spectacles
JP2009251279A Spectacles and spectacles case
JP2008077054A Spectacles
JP2008281967A Temple made of resin
JP2008015258A Piezoelectric buzzer
JP2006293158A Spectacles
JP2006290441A Waste paper binding auxiliary plate
JP2005283741A Pad for temple
JP2002287098A Stowage type temple and spectacles using the same
JP2002240475A Card storage container
JP2000318395A Magnet decorator for spectacle lens
JPH0974844A Structure for attaching working metallic fixture of horticultural manual working tool