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DOI KK

Overview
  • Total Patents
    11
About

DOI KK has a total of 11 patent applications. Its first patent ever was published in 1979. It filed its patents most often in Japan, United States and Germany. Its main competitors in its focus markets optics are MIMOSA AKT GES, FILM FABRIKATION AG F and AGFA ANSCO CORP.

Patent filings in countries

World map showing DOI KKs patent filings in countries
# Country Total Patents
#1 Japan 6
#2 United States 2
#3 Germany 1
#4 France 1
#5 United Kingdom 1

Patent filings per year

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

Focus industries

# Industry
#1 Optics

Top inventors

# Name Total Patents
#1 Sekine Keiziro 3
#2 Kodaka Fujio 1
#3 Doi Kimio 1
#4 Sawada Kenji 1
#5 Sekine Keijiro 1
#6 Oonuma Hidemichi 1
#7 Fujita Hajime 1
#8 Ooi Masayuki 1
#9 Tajima Riyouichi 1
#10 Toyabe Satoshi 1

Latest patents

Publication Filing date Title
JP2002046747A Photograph mailing system
US4968587A Method for producing color print having high quality and long life, applicable for long period conservation
JPS59195240A Film supplying device in daylight
JPS597935A Shutter setting device of camera capable of shifting
JPS5828729A Lens shift camera
GB2026183A Shutter release mechanism
JPS55153941A Distributive winding method of film