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ISHIBASHI KEIJI

Overview
  • Total Patents
    19
About

ISHIBASHI KEIJI has a total of 19 patent applications. Its first patent ever was published in 1975. It filed its patents most often in United States and Japan. Its main competitors in its focus markets semiconductors, surface technology and coating and machines are KYMA TECHNOLOGIES INC, NANOGAN LTD and NISHIGUCHI TARO.

Patent filings in countries

World map showing ISHIBASHI KEIJIs patent filings in countries
# Country Total Patents
#1 United States 18
#2 Japan 1

Patent filings per year

Chart showing ISHIBASHI KEIJIs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Ishibashi Keiji 19
#2 Nakahata Seiji 4
#3 Yoshizumi Yusuke 3
#4 Matsumoto Naoki 3
#5 Hachigo Akihiro 3
#6 Mikami Hidenori 3
#7 Irikura Masato 3
#8 Nishiura Takayuki 2
#9 Nakanishi Fumitake 1
#10 Futamura Masashi 1

Latest patents

Publication Filing date Title
US2013032822A1 Substrate, semiconductor device, and method of manufacturing the same
US2012267606A1 Group III nitride crystal substrate, epilayer-containing group III nitride crystal substrate, semiconductor device and method of manufacturing the same
US2012223417A1 Group iii nitride crystal substrate, epilayer-containing group iii nitride crystal substrate, semiconductor device and method of manufacturing the same
US2011133209A1 GaN substrate, epitaxial layer-provided substrate, methods of manufacturing the same, and method of manufacturing semiconductor device
US2011012233A1 Group III nitride crystal substrate, epilayer-containing group III nitride crystal substrate, semiconductor device and method of manufacturing the same
JPS51139434A Slide projecting test system