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YOSHITSUGU KEIKI

Overview
  • Total Patents
    18
About

YOSHITSUGU KEIKI has a total of 18 patent applications. Its first patent ever was published in 2008. It filed its patents most often in United States. Its main competitors in its focus markets optics are SIDNEY NEWCOMER HARRY, WHITING RICHARD R and AAC ACOUSTIC TECHNOLOGIES(SHENZHEN)CO LTD.

Patent filings in countries

World map showing YOSHITSUGU KEIKIs patent filings in countries
# Country Total Patents
#1 United States 18

Patent filings per year

Chart showing YOSHITSUGU KEIKIs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Optics

Focus technologies

# Technology
#1 Optical systems
#2 Cameras

Top inventors

# Name Total Patents
#1 Yoshitsugu Keiki 18
#2 Bito Takakazu 11
#3 Yamada Katsu 2
#4 Yoshinaga Shunichiro 2

Latest patents

Publication Filing date Title
US2011164153A1 Zoom lens system, imaging device and camera
US2010328500A1 Zoom lens system, imaging device and camera
US2010309338A1 Zoom lens system, imaging device and camera
US2010309563A1 Zoom lens system, imaging device and camera
US2010194929A1 Zoom lens system, imaging device and camera
US2010182491A1 Zoom lens system, imaging device and camera