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NAGASAWA SEISAKUSHO

Overview
  • Total Patents
    82
About

NAGASAWA SEISAKUSHO has a total of 82 patent applications. Its first patent ever was published in 1977. It filed its patents most often in Japan, EPO (European Patent Office) and WIPO (World Intellectual Property Organization). Its main competitors in its focus markets civil engineering and machines are RIELDA SERRATURE SRL, INTERNAT SECURITY PRODUCTS INC and WIDEN AND SANDH KEY PARTNERS A.

Patent filings in countries

World map showing NAGASAWA SEISAKUSHOs patent filings in countries
# Country Total Patents
#1 Japan 71
#2 EPO (European Patent Office) 3
#3 WIPO (World Intellectual Property Organization) 3
#4 Taiwan 2
#5 United States 2
#6 China 1

Patent filings per year

Chart showing NAGASAWA SEISAKUSHOs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Civil engineering
#2 Machines

Focus technologies

# Technology
#1 Locks
#2 Unspecified technologies

Top inventors

# Name Total Patents
#1 Nakajima Susumu 32
#2 Nagasawa Chiyokichi 16
#3 Takahashi Koichi 16
#4 Naito Kenji 13
#5 Watabe Akimaru 9
#6 Senda Masakatsu 5
#7 Watanabe Akemaru 4
#8 Yatagai Yoshimitsu 4
#9 Yoshida Takayuki 4
#10 Inotsume Hiromi 3

Latest patents

Publication Filing date Title
JP2013144896A Door lock
JP2013011097A Button lock
CN102782235A Button lock
JP2011026789A Door lock
JP2009185477A Locking device
JP2009127342A Button lock
JP2009041329A Door lock
JP2006029019A Button lock
JP2005029973A Composite lock
JP2004084460A Button lock
JP2004143819A Lock device for double sliding doors
JP2003287452A Venturi and method of manufacturing the same
JP2003262061A Indicating lock
JP2003120144A Weather protection device for door
JP2002058896A Clothes drying device
JP2001321600A Drying platform apparatus
JP2001299565A Buddhist altar and object
JP2001161477A Hanging device and hanging shelf
JP2001112609A Engaging device
JP2001113097A Hooking device