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NAKAI SADAO

Overview
  • Total Patents
    11
About

NAKAI SADAO has a total of 11 patent applications. Its first patent ever was published in 1990. It filed its patents most often in Japan, EPO (European Patent Office) and United States. Its main competitors in its focus markets optics and measurement are ALFA EXX AB, PATEL C KUMAR N and PRANALYTICA INC.

Patent filings in countries

World map showing NAKAI SADAOs patent filings in countries
# Country Total Patents
#1 Japan 9
#2 EPO (European Patent Office) 1
#3 United States 1

Patent filings per year

Chart showing NAKAI SADAOs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Optics
#2 Measurement

Top inventors

# Name Total Patents
#1 Nakai Sadao 11
#2 Yamanaka Masanori 7
#3 Yamanaka Chiyoe 6
#4 Izawa Yasukazu 6
#5 Akatsuka Masanori 4
#6 Yonezawa Yoshiyuki 4
#7 Sato Takeshi 3
#8 Nakatsuka Masahiro 3
#9 Ohmi Masato 2
#10 Onoda Hajime 2

Latest patents

Publication Filing date Title
JP2001127374A Rod lens, holder for rod lens, and ld array with rod lens
JPH09312430A Zig-zag slab solid-state laser and amplifier
JPH06296051A Active wave plate
JPH06147986A Method for measuring distribution of double refraction
JPH0694990A Condensing optical system for semiconductor
JPH05226756A Oscillation wavelength stabilizer for semiconductor laser
JPH05226755A Method and apparatus for controlling semiconductor laser
JPH04198800A Hybrid wiggler
JPH0442988A Wiggler for free electron laser