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NAKAI HATSUO

Overview
  • Total Patents
    18
About

NAKAI HATSUO has a total of 18 patent applications. Its first patent ever was published in 1975. It filed its patents most often in Japan. Its main competitors in its focus markets measurement are CRAMPTON STEPHEN J, QUENOT AND CIE S A R L and AREA SISTEMI S R L.

Patent filings in countries

World map showing NAKAI HATSUOs patent filings in countries
# Country Total Patents
#1 Japan 18

Patent filings per year

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

Focus industries

# Industry
#1 Measurement

Focus technologies

# Technology
#1 Measuring length, angles and areas

Top inventors

# Name Total Patents
#1 Nakai Hatsuo 17
#2 Kuwano Sadaichi 1
#3 Etsura Yoshitomo 1

Latest patents

Publication Filing date Title
JP2010163811A Code lock device
JP2010163812A Code lock device
JP2009275381A Permutation lock device
JP2009180007A Code lock device
JPS56126702A Inspecting device for precision of copied key
JPS53113697A Key
JPS5367598A Key
JPS5333799A Key
JPS5331497A Disc tumbler lock
JPS5331496A Tumbler lock
JPS5323800A Lock device
JPS5317499A Lock
JPS5315999A Bar key and its fabricating method
JPS536200A Disc tumbler lock
JPS532199A Disc tumbler lock
JPS52156100A Tumbler lock
JPS52146397A Key blank and its producing method
JPS5232379A Magnetic detection device of locks using magnet