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Ultrasonic sealing of packages
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Patent number 9,579,845
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Issue date Feb 28, 2017
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EWI (Edison Welding Institute, Inc.)
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Pak Meng Cham
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Ultrasonic sealing of packages
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Patent number 9,149,980
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Issue date Oct 6, 2015
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Frito-Lay North America, Inc.
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Pak Meng Cham
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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Ultrasonic sealing of packages
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Patent number 9,090,021
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Issue date Jul 28, 2015
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Frito-Lay North America, Inc.
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Pak Meng Cham
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL