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SANWA DENKI KK

Overview
  • Total Patents
    74
About

SANWA DENKI KK has a total of 74 patent applications. Its first patent ever was published in 1974. It filed its patents most often in Japan. Its main competitors in its focus markets optics are WRIGHT JOHN STRATTON, SUGIURA KENKYUSHO KK and KINO LTD.

Patent filings in countries

World map showing SANWA DENKI KKs patent filings in countries
# Country Total Patents
#1 Japan 74

Patent filings per year

Chart showing SANWA DENKI KKs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Optics

Focus technologies

# Technology
#1 Cameras

Top inventors

# Name Total Patents
#1 Atsumi Kenichi 14
#2 Hanaoka Shiyouji 9
#3 Komatsu Tomoyuki 6
#4 Takayama Shinichi 6
#5 Satou Suwao 6
#6 Nakayama Ichirou 5
#7 Matsuda Riyouichi 4
#8 Inoue Masaru 4
#9 Fukuda Toshio 4
#10 Kasahara Masaru 3

Latest patents

Publication Filing date Title
JP2010087659A Speaker device
JP2009177369A Speaker apparatus
JP2008277056A Heater structure and its manufacturing method
JP2005123751A Electric noise filter and electric noise eliminating method
JP2002290185A Electrical noise filter
JPH10269995A Incandescent lamp
JPH0670941A Electrode holder at edge of electric surgical knife
JPS5828726A Film guiding device
JPS5828725A Film take-up device
JPS5828732A Coaxial double-stage reel driver for automatic vision
JPS5789746A Projector
JPS5768827A Film feed device of projector
JPS5749942A Sound projector
JPS5749943A Sound projector
JPS5723930A Prevention device for abnormal sound of projector
JPS56122026A Sound record controller of projector
JPS5654427A Framer correcting device of projector
JPS55101936A Head pad in movie projector with record/playback head
JPS56102840A Projector
JPS5696306A Direct current regulated power supply device