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BLACK ROCK MFG COMPANY

Overview
  • Total Patents
    13
About

BLACK ROCK MFG COMPANY has a total of 13 patent applications. Its first patent ever was published in 1923. It filed its patents most often in United States. Its main competitors in its focus markets machines, machine tools and textiles and paper are VENDMATIC OY, PARSONS HENRY and HUGO REICHEL.

Patent filings in countries

World map showing BLACK ROCK MFG COMPANYs patent filings in countries
# Country Total Patents
#1 United States 13

Patent filings per year

Chart showing BLACK ROCK MFG COMPANYs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Machines
#2 Machine tools
#3 Textiles and paper

Top inventors

# Name Total Patents
#1 William Nicholas 4
#2 Messinger Jr Lester H 3
#3 Hammond Guy L 3
#4 Keller Joseph R 2
#5 Maquat Lloyd E 2
#6 St John Stuart B 1
#7 Barnes Leslie W 1
#8 Messinger Jr Lester Hubert 1

Latest patents

Publication Filing date Title
US2509602A Cutting machine
US2437109A Dipping machine
US2119862A Roller polishing machine
US2048634A Roller grinding machine
US1942986A Rubber ring cutting machine
US1968550A Rubber roller grinding machine
US1859785A Rubber tire tread cutting machine
US1823501A Rubber-cutting machine
US1685127A Rubber-ring-cutting machine
US1721905A Machine for cutting belts and rings from tubular stock
US1753299A Rubber-tube-trimming machine
US1640050A Rubber-tube trimming, wrapping, and rolling machine
US1592933A Rubber-jar-ring-cutting machine