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HARSHAW CHEM CORP

Overview
  • Total Patents
    542
About

HARSHAW CHEM CORP has a total of 542 patent applications. Its first patent ever was published in 1924. It filed its patents most often in United States, Canada and United Kingdom. Its main competitors in its focus markets surface technology and coating, materials and metallurgy and basic materials chemistry are KEWANEE OIL CO, GUANGDONG GUANGHUA SCI-TECH CO LTD and BRITISH CHROME CHEMICALS LTD.

Patent filings in countries

World map showing HARSHAW CHEM CORPs patent filings in countries

Patent filings per year

Chart showing HARSHAW CHEM CORPs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Harshaw William J 29
#2 Swinehart Carl F 27
#3 Du Rose Arthur H 23
#4 Long Kenneth E 17
#5 Harbert Carl J 15
#6 Towle Jack L 12
#7 Seabright Clarence A 11
#8 Morris William C 10
#9 Hay John O 8
#10 Rudolf Lind 8

Latest patents

Publication Filing date Title
US5065031A Personnel TL dosimetry method and apparatus for determination of risk related quantity
EP0339640A1 Alumina-titania composition
US4975589A Thermoluminescent dosimeter with improved card holder
US4827131A TLD apparatus and method with elapsed time read-out capability
US4957895A Hydrotreating catalyst and process
US4825077A Process control system and method
US4880495A Regeneration of copper etch bath
US4835388A Thermoluminescence dosimetry card reader heating assembly
US4827132A TLD apparatus and method
CA1262192A Radiation detection module
CA1225521A Metal finishing barrel apparatus
US4405413A Blush-free acid zinc electroplating baths and process
US4360450A Colloidal aqueous dispersion of an alkali metal polyantimonate and a process of making said
US4410468A Hot press-forging of an optical body with dynamic constraint by crystal powder
US4422817A Load manipulating apparatus
US4401542A Metal finishing barrel
US4360431A Self-unloading centrifuge
US4422774A Metal finishing barrel apparatus
US4341654A Getter for melt-grown scintillator ingot
CA1142263A Copper plating process for printed circuit boards