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Bertha R. Vaughn
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Midland, MI, US
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last 30 patents
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Patent Grant
Apparatus for making a zipper for a reclosable thermoplastic bag
Patent number
5,478,228
Issue date
Dec 26, 1995
Dowbrands L.P.
Brian C. Dais
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Method of making a zipper for reclosable thermoplastic bag
Patent number
5,307,552
Issue date
May 3, 1994
Dowbrands L.P.
Brian C. Dais
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Zipper for a reclosable thermoplastic bag and a process and apparat...
Patent number
5,070,584
Issue date
Dec 10, 1991
Dowbrands Inc.
Brian C. Dais
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Thickened amphoteric surfactant solutions
Patent number
4,552,685
Issue date
Nov 12, 1985
The Dow Chemical Company
John M. Kernstock
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE