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ROBERTS CORP

Overview
  • Total Patents
    28
About

ROBERTS CORP has a total of 28 patent applications. Its first patent ever was published in 1977. It filed its patents most often in United States, EPO (European Patent Office) and Canada. Its main competitors in its focus markets materials and metallurgy, machine tools and machines are HINES FLASK COMPANY, EASTERN CLAY PRODUCTS INC and HOTTINGER ADOLF MASCH.

Patent filings in countries

World map showing ROBERTS CORPs patent filings in countries
# Country Total Patents
#1 United States 15
#2 EPO (European Patent Office) 5
#3 Canada 4
#4 Japan 4

Patent filings per year

Chart showing ROBERTS CORPs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Brown Jackson E 14
#2 Nagarwalla Pheroze J 14
#3 Bellis Kenneth E 14
#4 Cina Ronald A 4
#5 Foster James F 4
#6 Kluge Albert D 4
#7 Kenesu Ii Berisu 3
#8 Gyger Jack D 3
#9 Niedermeyer William 3
#10 Jiyakuson Ii Buraun 3

Latest patents

Publication Filing date Title
US4971515A Apparatus for moving individual sheets from a stack of sheets
US4883558A Method and apparatus for bonding pairs of mold shells into molds
US4836269A Forming apparatus having catalyst introduction simultaneous with sand injection
US4846073A Selective delivery arrangement for self propelled pallet vehicles
EP0284842A1 Method and apparatus for handling tooling within a foundry machine
CA1280575C Forming apparatus having catalyst introduction simultaneous with sand injection
EP0264532A1 Accumulating conveyor with self-propelled pallets
US4757855A Method and apparatus for loading and unloading tooling from a foundry machine
US4830082A Machine and method for making molds using an activating gas
US4714100A Method and apparatus for changing a mold box on a molding machine
US4718474A Mold transfer mechanism for a molding machine
US4804173A Method and apparatus for moving individual sheets from a stack of sheets
US4233907A Mold conveyor drive assembly
US4191239A Blow plate structure and mold formed thereby
US4137675A Sand reclaimer
US4210194A Automatic method for producing molds using chemically bonded sands
US4112999A Conveyor control system
US4074744A Automatic apparatus for producing molds using chemically bonded sands