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NAPRA CO LTD

Overview
  • Total Patents
    133
  • GoodIP Patent Rank
    32,476
  • Filing trend
    ⇩ 55.0%
About

NAPRA CO LTD has a total of 133 patent applications. It decreased the IP activity by 55.0%. Its first patent ever was published in 2006. It filed its patents most often in United States, China and Taiwan. Its main competitors in its focus markets semiconductors, materials and metallurgy and electrical machinery and energy are NAPURA KK, SHENZHEN INST OF WIDE BANDGAP SEMICONDUCTORS and HERAEUS MATERIALS TECH GMBH.

Patent filings in countries

World map showing NAPRA CO LTDs patent filings in countries

Patent filings per year

Chart showing NAPRA CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Sekine Shigenobu 128
#2 Sekine Yurina 92
#3 Kuwana Yoshiharu 35
#4 Kimura Ryuji 11
#5 Shimaya Chihiro 8
#6 Kamibayashi Kazutoshi 7
#7 Shigenobu Sekine 5
#8 Yurina Sekine 5
#9 Ikeda Hiroaki 4
#10 Yoshiharu Kuwana 3

Latest patents

Publication Filing date Title
US10906136B1 Joint structure
US2021078112A1 Bonding structure
US2021078111A1 Metal particle
US2018054887A1 Three-dimensional laminated circuit board, electronic device, information processing system, and information network system
US2017117353A1 Circuit board and electronic device
US9515044B1 Electronic device, method of manufacturing the same, metal particle, and electroconductive paste
EP2839904A1 Functional material
CN104167831A Electricity-mechanical conversion device and industry machine
JP2012136781A Method of manufacturing microspherical metal particle
JP2012172178A Alloy material, circuit board, electronic device, and method of manufacturing the same
EP2259307A2 Electronic device
US2010031501A1 Method for filling through hole or non-through hole formed on board with filler
US2009084588A1 Circuit board, electronic device and method for manufacturing the same
CN101494950A Wiring board with through hole or non through hole and method of manufacturing the same
EP2082825A1 Wiring board having a hole with a metal wiring formed therein, and method for producing the same
US2008038555A1 Method for producing spherical particles having nanometer size, crystalline structure, and good sphericity
US2008132433A1 Lubricant composition and bearing structure