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.
# | Country | Total Patents | |
---|---|---|---|
#1 | United States | 15 | |
#2 | Canada | 2 |
# | Industry | |
---|---|---|
#1 | Chemical engineering | |
#2 | Textiles and paper | |
#3 | Packaging and shipping | |
#4 | Machines | |
#5 | Consumer goods | |
#6 | Optics |
# | Technology | |
---|---|---|
#1 | Finishing textile fabrics | |
#2 | Handling thin material | |
#3 | Printing machines | |
#4 | Photosensitive materials | |
#5 | Woven fabrics | |
#6 | Trimmings | |
#7 | Producing goods from plastic | |
#8 | Fillers | |
#9 | Footwear features | |
#10 | Shedding mechanisms |
# | Name | Total Patents |
---|---|---|
#1 | Sperry Paul A | 17 |
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 |