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OKA SEIJI

Overview
  • Total Patents
    12
About

OKA SEIJI has a total of 12 patent applications. Its first patent ever was published in 1982. It filed its patents most often in United States and Japan. Its main competitors in its focus markets semiconductors, audio-visual technology and environmental technology are TAIWAN SEMICONDUCTOR MANFACTUR, OHKUCHI MAT CO LTD and THIN FILM MODULE INC.

Patent filings in countries

World map showing OKA SEIJIs patent filings in countries
# Country Total Patents
#1 United States 11
#2 Japan 1

Patent filings per year

Chart showing OKA SEIJIs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Oka Seiji 12
#2 Oi Takeshi 5
#3 Obiraki Yoshiko 5
#4 Yamaguchi Yoshihiro 3
#5 Yoshida Hiroshi 2
#6 Usui Osamu 1
#7 Tada Kazuhiro 1
#8 Ueda Tetsuya 1
#9 Nakayama Yasushi 1
#10 Idaka Shiori 1

Latest patents

Publication Filing date Title
JPS5997688A Running mechanism stopped and made runnable to arbitrary direction by remote control