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NAT LEAD CO

Overview
  • Total Patents
    1,971
About

NAT LEAD CO has a total of 1,971 patent applications. Its first patent ever was published in 1911. It filed its patents most often in United States, Canada and United Kingdom. Its main competitors in its focus markets materials and metallurgy, basic materials chemistry and machines are KERR MC GEE CHEM CORP, CABOT CORP and EAGLE PICHER LEAD COMPANY.

Patent filings in countries

World map showing NAT LEAD COs patent filings in countries

Patent filings per year

Chart showing NAT LEAD COs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Bauer Alfred F 42
#2 Herman Daniel F 36
#3 Kebrich Leonard M 32
#4 Pitrot Adrian R 31
#5 Leon Merker 28
#6 Orsino Joseph A 27
#7 Wainer Eugene 24
#8 Hendricks John G 21
#9 Blumenthal Warren B 20
#10 Alfred Ferdinand Bauer 20

Latest patents

Publication Filing date Title
US3775447A Lignite products and compositions thereof
US3883345A Process for the recovery of antimony
US3780306A Radioactive shipping container with neutron and gamma absorbers
US3732423A Shipping container for radioactive material
ZA7100559B Thread-rolling method,thread-rolling dies,and method of manufacturing the dies
US3734761A Process for producing titanium dioxide product containing aluminum oxide
US3779804A Electrodes for ceramic bodies
US3694254A Method of producing and coating silver powder and the resultant product
GB1321886A Treatment of pigmentary titanium dioxide
CA936918A Means and method for magnetically measuring wall thickness of metal pipes and plate structures
US3691070A Employment of bentonite in brine muds
US3619744A Monolithic capacitors
US3812175A Multiple stage carbonylation process
US3596438A Removal of carbonyl sulfide from industrial gases
US3561548A Emulsion mud drilling
US3617217A Preparation of anatase titanium dioxide pigment
US3616439A Continuous process for the electrolytic production of aluminum and apparatus therefor
US3612153A Method and apparatus for diecasting including a flash cavity
US3534391A Body heating apparatus
CH506358A Spray-mould core actuator