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CHAPMAN WILLIAM H

Overview
  • Total Patents
    23
About

CHAPMAN WILLIAM H has a total of 23 patent applications. Its first patent ever was published in 1900. It filed its patents most often in United States and Canada. Its main competitors in its focus markets electrical machinery and energy, packaging and shipping and foods and drinks are CHAPMAN ELECTRIC NEUTRALIZER C, HAUG GMBH & CO KG and ION SYSTEMS INC.

Patent filings in countries

World map showing CHAPMAN WILLIAM Hs patent filings in countries
# Country Total Patents
#1 United States 21
#2 Canada 2

Patent filings per year

Chart showing CHAPMAN WILLIAM Hs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Chapman William H 23

Latest patents

Publication Filing date Title
US1809022A Motor vehicle headlamp
US1596335A Circuit closer for automobile curve lights
US1524423A Device for discharging electricity from gasoline tanks and the like
US1489425A Apparatus for neutralizing static electricity
US1416789A Magneto generator
US1250140A Process for loosening the skins of tomatoes and the like.
US1207862A Process and apparatus for neutralizing static electricity.
US1228405A Process and apparatus for rectifying alternating currents of electricity.
US1207861A Elevator-brake.
US1202672A Generator for static electricity.
US1027101A Regulator for dynamos.
US940431A Means for neutralizing static electricity.
US983536A Method of removing static electricity.
US900830A Apparatus for neutralizing static electricity.
US904248A Means for removing static electricity.
US878273A Method of neutralizing static electricity.
US878272A Conductor for discharging high-voltage electric charges.
US718910A Process of controlling electric motors.
US707300A Controller for electric motors.
US705561A Rheostat.