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SANKYO KOGAKU KOGYO KK

Overview
  • Total Patents
    45
About

SANKYO KOGAKU KOGYO KK has a total of 45 patent applications. Its first patent ever was published in 1968. It filed its patents most often in Germany, Japan and United States. Its main competitors in its focus markets optics, audio-visual technology and measurement are VOCKENHUBER KARL, MONTRON CORP and EUMIG.

Patent filings in countries

World map showing SANKYO KOGAKU KOGYO KKs patent filings in countries
# Country Total Patents
#1 Germany 14
#2 Japan 12
#3 United States 12
#4 France 6
#5 United Kingdom 1

Patent filings per year

Chart showing SANKYO KOGAKU KOGYO KKs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Optics
#2 Audio-visual technology
#3 Measurement

Top inventors

# Name Total Patents
#1 Takagi Katsuhide 8
#2 Kondo Hideyuki 4
#3 Katagiri Tooru 3
#4 Nozawa Yoshikuni 3
#5 Fukasawa Toshiro 3
#6 Katagiri Tohru 3
#7 Nozawa Y 2
#8 Hamamoto Yukio 2
#9 Moriyama Hisao 2
#10 Uyama Takenori 2

Latest patents

Publication Filing date Title
JPH06270047A Lens polishing work method and device therefor
DE2809530A1 AUTOMATIC FOCUSING DEVICE
US4186300A Focus detector
DE2755296A1 Automatic focussing circuit for camera - has delay circuit to ensure lens is focussed before shutter release is effective
FR2411428A1 Automatic focussing circuit for camera - has delay circuit to ensure lens is focussed before shutter release is effective
DE2754052A1 Automatic focussing mechanism for camera - uses long base rangefinder and two signal generators which control rangefinder mirror movement and taking lens drive
FR2410835A1 Automatic focussing mechanism for camera - uses long base rangefinder and two signal generators which control rangefinder mirror movement and taking lens drive
US4154510A Lens barrel
DE2628423A1 Control device for film camera - regulates exposure by changing aperture of diaphragm consisting of pair of diaphragm sectors
JPS5143916A Shikinsatsueino kanonazuumurenzu
DE2518573A1 FILM CAMERA FOR SIMULTANEOUS FILM AND SOUND RECORDING
JPS5130731A 1 ganrefukameranofuaindaanaigoshosochi
JPS5123729A Eishakino fuirumuyusoseigyosochi
JPS5116022A Eishakino kogakukei
DE2339938A1 CONTROL DEVICE IN A FILM PROJECTOR
GB1383853A Zoom lens system operatable for extremely short distance photo graphing
DE2234728A1 RUBBER LENS SYSTEM FOR PHOTOGRAPHIC SHOOTING AT EXTREMELY SHORT DISTANCES
US3781019A Automatic continuous record/playback means for tape cassette loading tape recorder
US3810240A Tape recorder
US3643574A Focusing device for optical equipment