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WILLIAM HERBERT HATFIELD

Overview
  • Total Patents
    23
About

WILLIAM HERBERT HATFIELD has a total of 23 patent applications. Its first patent ever was published in 1922. It filed its patents most often in United Kingdom. Its main competitors in its focus markets materials and metallurgy, surface technology and coating and chemical engineering are SHENYANG DALU LASER ENG CO LTD, CHENGDU BANGPU ALLOY MATERIALS CO LTD and NANTONG XINXIANG ZINC IND CO LTD.

Patent filings in countries

World map showing WILLIAM HERBERT HATFIELDs patent filings in countries
# Country Total Patents
#1 United Kingdom 23

Patent filings per year

Chart showing WILLIAM HERBERT HATFIELDs patent filings per year from 1900 to 2020

Latest patents

Publication Filing date Title
GB556436A Improvements in or relating to the casting of ingots
GB577892A Improvements relating to alloy steels
GB577133A A process for improving the properties of iron alloy castings
GB572374A A process for improving the properties of iron alloy castings
GB537708A Improvements in or relating to chromium-nickel steel alloys
GB508710A Improvements in or relating to alloy steels
GB582660A Improvements in or relating to armour-piercing shells
GB493311A Improvements in or relating to alloy steels
GB484835A A new or improved high tensile alloy steel
GB481805A Improvements in the manufacture of sintered hard metallic alloys
GB477181A Improvements in the manufacture of sintered hard metallic alloys
GB465916A Improvements in or relating to corrosion resisting alloy steels
GB436229A Improvements in or relating to cooking or heating utensils made of stainless steel
GB419621A Improvements in or relating to alloy steels, particularly for colddrawing dies
GB396809A Improvements in or relating to stainless steel alloys adapted for use in turbine blading
GB377244A Improvements in or relating to processes for hardening alloy steels
GB371348A Improvements in or relating to tubes for steam superheaters and the like
GB362902A Improvements in or relating to apparatus or articles for use in chemical and like processes and alloys therefor
GB333237A A method of, or process for, rendering austenitic nickelchromium steels non-corrodible
GB316394A Improvements in or relating to metal articles for use in chemical and like processes and alloys therefor