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AMERICAN LONGWALL MINING CORP

Overview
  • Total Patents
    11
About

AMERICAN LONGWALL MINING CORP has a total of 11 patent applications. Its first patent ever was published in 1990. It filed its patents most often in United States, Canada and China. Its main competitors in its focus markets packaging and shipping, mechanical elements and civil engineering are BROCKWAY ENG CO LTD, HOFFMANN FRANK F and HUWOOD INT LTD.

Patent filings in countries

World map showing AMERICAN LONGWALL MINING CORPs patent filings in countries

Patent filings per year

Chart showing AMERICAN LONGWALL MINING CORPs patent filings per year from 1900 to 2020

Focus technologies

Top inventors

# Name Total Patents
#1 Bandy Jr Clarence L 5
#2 Bandy Clarence L Jr 3
#3 Reid William J 2
#4 Cocksedge Richard 1
#5 Bandy Clarence Lee Jr 1
#6 Reid William James 1
#7 Bandy Jr Clarence Lee 1
#8 Bandy Jun Clarence Lee 1

Latest patents

Publication Filing date Title
US5272289A Scraper chain conveyor
US5232068A Remote lubrication system for conveyor bearing
US5131724A Conveyor pan with keyed deck
US5131528A Conveyor apparatus with hydraulic tensioning control
US5074827A Reversible chain conveyor sprocket assembly