Learn more

HARBISON WALKER REFRACTORIES

Overview
  • Total Patents
    729
About

HARBISON WALKER REFRACTORIES has a total of 729 patent applications. Its first patent ever was published in 1907. It filed its patents most often in United States, Canada and United Kingdom. Its main competitors in its focus markets materials and metallurgy, thermal processes and machines are MINTEQ INTERNATIONAL INC, GEN REFRACTORIES CO and RESCO PRODUCTS INC.

Patent filings per year

Chart showing HARBISON WALKER REFRACTORIESs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Davies Ben 45
#2 Ben Davies 43
#3 Weaver Ernest P 28
#4 Erny Edward L 23
#5 Birch Raymond E 22
#6 Renkey Albert L 18
#7 Miller Jr Eldon D 15
#8 King Donald F 15
#9 Langenohl Mark C 15
#10 Earl Leatham 15

Latest patents

Publication Filing date Title
WO2011079090A2 Chromia-containing refractory
EP2303795A2 Chromia-alumina refractory
US2007213199A1 Refractory composition
US2007213198A1 Refractory composition
CA2512308A1 Refractory block and refractory wall assembly
US2006242914A1 Refractory block and refractory wall assembly
US7104789B1 Wall structure for carbon baking furnace
US2003228551A1 Rotary kiln heat exchanger and method of assembling same
US6190448B1 Non-slumping, pumpable castable high purity silica composition
US6268018B1 Method of applying a non-slumping pumpable castable high purity silica composition
US6313055B1 Refractory castables containing thermal black
US6313056B1 Non-slumping sprayable refractory castables containing thermal black
CN1206637A Precast module leveling assembly for metallurgical vessel
CN1206638A Improved metallurgical furnace and use method
MX9705949A Fiber reinforced spray mix.
US5882583A precast module leveling assembly for a metallurgical vessel
US5879616A Metallurgical vessel and method of using the same
JPH10101440A Fiber-reinforcing blow mix
US5770536A Fiber reinforced spray mix
US5753572A Castable and gunning composition with improved resistance to build-up and alkali infiltration