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KEYSTONE INVEST CORP

Overview
  • Total Patents
    19
About

KEYSTONE INVEST CORP has a total of 19 patent applications. Its first patent ever was published in 2000. It filed its patents most often in United States, Australia and WIPO (World Intellectual Property Organization). Its main competitors in its focus markets materials and metallurgy, machines and machine tools are AIDA CHEMICAL IND CO LTD, HAIAN YINGQIU POWDER METALLURGY CO LTD and AUTOMOTIVE PARTS AND ACCESSORY SYSTEMS R & D CT LTD.

Patent filings in countries

World map showing KEYSTONE INVEST CORPs patent filings in countries
# Country Total Patents
#1 United States 12
#2 Australia 3
#3 WIPO (World Intellectual Property Organization) 2
#4 Canada 1
#5 Sweden 1

Patent filings per year

Chart showing KEYSTONE INVEST CORPs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Kosco John C 14
#2 Anderson Gary L 8
#3 Muroski Jerome E 2
#4 Imbrogno Peter G 2
#5 Alven David A 1
#6 Olson William J 1

Latest patents

Publication Filing date Title
US7854995B1 High density dual helical gear
US7455711B1 Process for manufacturing hardened powder metal parts
US7794551B1 Carburization of metal articles
US7364803B1 High density dual helical gear and method for manufacture thereof
US7416696B2 Powder metal materials and parts and methods of making the same
US6833018B1 Powder metal materials including glass
US6793705B2 Powder metal materials having high temperature wear and corrosion resistance
US6630101B2 Method for producing powder metal gears
US6592809B1 Method for forming powder metal gears
US6485540B1 Method for producing powder metal materials
US6338747B1 Method for producing powder metal materials
US6473964B1 Method of fabricating camshafts