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YAMADA SHADOWLESS LAMP CO

Overview
  • Total Patents
    18
About

YAMADA SHADOWLESS LAMP CO has a total of 18 patent applications. Its first patent ever was published in 1975. It filed its patents most often in United States, Japan and Canada. Its main competitors in its focus markets electrical machinery and energy, machines and optics are HIGH END SYSTEMS INC, JIANGXI SUYANG SOLAR TECH CO LTD and IANIRO QUARTZCOLOR SPA.

Patent filings in countries

World map showing YAMADA SHADOWLESS LAMP COs patent filings in countries
# Country Total Patents
#1 United States 7
#2 Japan 5
#3 Canada 3
#4 Germany 3

Patent filings per year

Chart showing YAMADA SHADOWLESS LAMP COs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Hayakawa Yoshito 10
#2 Yamada Isao 3
#3 Ikeda Mitsuyuki 3
#4 Hayakawa Yoshihito 2
#5 Koyama Mitsuhiro 2
#6 Komori Yumiko 2
#7 Yamada Reijirou 1
#8 Kato Yasuhiro 1

Latest patents

Publication Filing date Title
US5068767A Automatic focus position adjusting unit for use in shadowless lighting device
US4639838A Shadowless lighting equipment for medical use
US4384315A Photographic flash device for use with a shadowless lamp for surgical operation
CA1124219A Lighting fixture for use in medical operations and therapeutic treatment
JPS5660551A Shadeless lighting system for medical treatment
JPS551065A Medical illuminator
US4130858A Lamp-moving device
JPS52105682A Nonnshade illuminating device for medical treatment
JPS5216891A Medical illuminator
JPS51139190A Apparatus of focusing an enclosed multi-lamp type astral lamp
US4025777A Clinical illumination apparatus