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HEBEI COREFRA SILICON NITRIDE MAT CO LTD

Overview
  • Total Patents
    29
  • GoodIP Patent Rank
    56,233
  • Filing trend
    ⇩ 42.0%
About

HEBEI COREFRA SILICON NITRIDE MAT CO LTD has a total of 29 patent applications. It decreased the IP activity by 42.0%. Its first patent ever was published in 2015. It filed its patents most often in China. Its main competitors in its focus markets materials and metallurgy, macromolecular chemistry and polymers and basic materials chemistry are STK CERAMICS LAB, NAIGAI CERAMICS CO LTD and KONOSHIMA CHEMICAL.

Patent filings in countries

World map showing HEBEI COREFRA SILICON NITRIDE MAT CO LTDs patent filings in countries
# Country Total Patents
#1 China 29

Patent filings per year

Chart showing HEBEI COREFRA SILICON NITRIDE MAT CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Liu Jiuming 29
#2 Wu Cheng 15
#3 Zhang Hongran 9
#4 Yan Jipeng 5
#5 Zhang Rong 5
#6 Fu Yajie 4
#7 Gao Yong 3
#8 Tian Zhuo 2
#9 Cao Xianying 1

Latest patents

Publication Filing date Title
CN110577198A Method for removing crushed small particles in aluminum nitride powder
CN109734455A A method of preparing porous silicon nitride ceramic
CN109734454A A kind of method that injection forming prepares compact silicon nitride ceramic material
CN109750351A A kind of efficient Si of polycrystalline silicon ingot casting3N4Powder
CN109095444A A kind of broken short grained method in removal aluminium nitride powder
CN109650355A A kind of method of low temperature preparation hexagonal boron nitride
CN109650904A A kind of ball grinding method improving beta-silicon nitride powder partial size and distribution
CN109467064A A kind of preparation method of densification pattern aluminium nitride powder
CN109384467A A kind of preparation method of high-power heat-dissipation aluminium nitride substrate
CN109206912A A kind of insulating heat conductive silicon grease composition
CN108975880A A kind of preparation method of the magnesium brickmaking of low content of magnesium
CN106277823A A kind of grain size distribution improves the method for silicon nitride coating compactness
CN106395769A Method for preparing high purity high alpha phase silicon nitride powder
CN107698264A A kind of preparation method of modified alpha-phase silicon nitride powder
CN107673766A A kind of structural ceramics high purity silicon nitride raw powder's production technology
CN106241754A A kind of method that additive-free low pressure prepares high purity silicon nitride
CN107662907A A kind of method of low temperature preparation alpha-phase silicon nitride powder
CN106276825A A kind of heat treatment method controlling beta-silicon nitride powder granularity
CN106220188A A kind of narrow particle size distribution high purity silicon nitride raw powder's production technology
CN105862123A Method for preparing silicon nitride coatings with silicon sandwich layers for polycrystalline silicon cast ingots