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SHOWA SPRING KK

Overview
  • Total Patents
    25
About

SHOWA SPRING KK has a total of 25 patent applications. Its first patent ever was published in 1979. It filed its patents most often in Japan and Taiwan. Its main competitors in its focus markets thermal processes and civil engineering are VER METALLWERKE A G, TAN FANG and BEST OUME KK.

Patent filings in countries

World map showing SHOWA SPRING KKs patent filings in countries
# Country Total Patents
#1 Japan 24
#2 Taiwan 1

Patent filings per year

Chart showing SHOWA SPRING KKs patent filings per year from 1900 to 2020

Focus industries

Focus technologies

Top inventors

# Name Total Patents
#1 Kitamura Katsuto 17
#2 Yoshikawa Minoru 11
#3 Ogata Yasunaka 8
#4 Kitamura Katsuhiro 7
#5 Hashimoto Kazuyoshi 5
#6 Kushitani Kazumichi 3
#7 Kotani Tsutomu 1
#8 Kimura Toshihiro 1
#9 Maeda Masashi 1
#10 Sakuma Shozo 1

Latest patents

Publication Filing date Title
JP2011190684A Door closing device
JP2010209679A Door body closing device
JP2009293186A Folding door closer, and folding door with closer function
JP2009097157A Door opening/closing device
JP2007285117A Door body moving device
JP2006283558A Closing mechanism of sliding door and its closing device
JP2007085101A Door body closing device
JP2006219847A Door body closing device
JP2004108087A Mechanism and device for closing sliding door
JP2001193365A Fitting for frame body assembly and frame body assembly construction method
JP2000274136A Resistance imparting device for door
JP2000179237A Frame adjusting device and frame fitting method
JP2000110449A Structure of fittings, manufacture thereof and warp straightening device
JPH10196199A Hinge for folding door
JPH09279692A Fastening structure of wood and auxiliary metal fitting for fastening structure
JPH09195621A Guide wheel for folding door
JPH07293104A Semiautomatic opening/closing sliding door and its semiautomatic opening/closing device
JPH07269179A Door pull device
JPH0388208A Clamp
JPH01262873A Device for extracting injection needle