Learn more

KETCHUM ERNEST C

Overview
  • Total Patents
    16
About

KETCHUM ERNEST C has a total of 16 patent applications. Its first patent ever was published in 1905. It filed its patents most often in United States and Canada. Its main competitors in its focus markets electrical machinery and energy, mechanical elements and environmental technology are AUGUSTE MICHEL, ESKAEF MANUTIC MECHATRONIC and SKF MAGNETIC MECHATRONICS.

Patent filings in countries

World map showing KETCHUM ERNEST Cs patent filings in countries
# Country Total Patents
#1 United States 11
#2 Canada 5

Patent filings per year

Chart showing KETCHUM ERNEST Cs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Ketchum Ernest C 16
#2 Andrews David H 4

Latest patents

Publication Filing date Title
US1182848A Device for cooling armatures of dynamo-electrical machines.
CA158671A Dynamo electrical machine
CA156701A Dynamo electrical machine
CA151830A Dynamo electrical machine
CA150080A Brush support for electrical machines
US1087381A Brush for dynamo-electrical machines.
US1091748A Dynamo-electrical machine.
US1059304A Mercury-dropper.
US1031071A Adjustable brush-support.
US966839A Brush-holder for dynamos.
US966840A Automatic mercury-dropper.
US961140A Thrust-bearing.
US900860A Antifriction-bearing.
US885055A Locomotive.
CA107300A Dynamo
US826668A Dynamo.