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SPERRY PAUL A

Overview
  • Total Patents
    17
About

SPERRY PAUL A has a total of 17 patent applications. Its first patent ever was published in 1932. It filed its patents most often in United States and Canada. Its main competitors in its focus markets chemical engineering, textiles and paper and packaging and shipping are JIANGSU LITTLE SUN MACHINE TECHNOLOGY CO LTD, MUELLER FRANZ FA and TEXTILE FINISHING MACHINERY CO.

Patent filings in countries

World map showing SPERRY PAUL As patent filings in countries
# Country Total Patents
#1 United States 15
#2 Canada 2

Patent filings per year

Chart showing SPERRY PAUL As patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Sperry Paul A 17

Latest patents

Publication Filing date Title
US2852257A Work handling apparatus
US2884169A Bow-forming device
US2852252A Sheet material feed control means and method
US2637891A Web tensioning device
US2596445A Heddle for weaving devices
US2498741A Photographic printing mask
US2298906A Cloth-treating apparatus
US2220627A Apparatus for treating fabric
US2202875A Method of molding a shoe sole
US2170579A Cloth finishing
US2206860A Shoe
US2188665A Fabric stretching and straightening apparatus
US2170578A Guider
US2064993A Expanding and guiding apparatus
US2043451A Fabric
CA364888A Fabric
CA384766A Shoe and sole