Learn more

DOI SEISAKUSHO KK

Overview
  • Total Patents
    62
  • GoodIP Patent Rank
    211,019
  • Filing trend
    ⇩ 100.0%
About

DOI SEISAKUSHO KK has a total of 62 patent applications. It decreased the IP activity by 100.0%. Its first patent ever was published in 1980. It filed its patents most often in Japan. Its main competitors in its focus markets environmental technology, mechanical elements and packaging and shipping are REMONTNO STR UCHASTOK CH OBLAS, SIB NII GIDROTEKHNIKI MELIORAT and SHINWASANGYO CO LTD.

Patent filings in countries

World map showing DOI SEISAKUSHO KKs patent filings in countries
# Country Total Patents
#1 Japan 62

Patent filings per year

Chart showing DOI SEISAKUSHO KKs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Kitagawa Katsuji 16
#2 Nohara Mitsuhiro 11
#3 Miura Takeomi 8
#4 Takasaki Yoshiki 8
#5 Suzuki Norifusa 6
#6 Kashiwamura Hideki 6
#7 Doi Osamu 4
#8 Osaku Makoto 4
#9 Yoshizawa Suetake 4
#10 Watanabe Masato 3

Latest patents

Publication Filing date Title
JP2020190269A Universal expansion joint
JP2020178397A Pipeline material attachment device for embedded cable way facility
JP2018193699A Handhole
JP2014231671A Iron cover for underground structure
JP2012016121A Conduit for cable
JP2011125076A Supporting stand device for ground electric facility apparatus on slope
JP2011061997A Trough for multipurpose underground conduit
JP2010163770A Lid apparatus for buried box
JP2009207216A Supporting stand device for ground electric facility equipment for uphill
JP2008299580A Radio communication system for mobile body
JP2007209051A Method of supporting earthquake-proof cable, and its support
JP2007074324A Supervisory device and remote supervisory system using the same
JP2006314167A Method of protecting land burial cable, etc. at ground deformation and its protector
JP2006158102A Cable holder
JP2006158057A Waterproofing device for conduit for cable
JP2005282156A Grating fixing device
JP2005282122A Grating fixing device
JP2005065406A Joint device for cable conduit
JP2005010550A Buried object management system
JP2004242408A Method for connecting flexible tube