Patents by Inventor Jan Jerry Christian Stigsson

Jan Jerry Christian Stigsson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Formulations for cellular, foamed-polymer products based on polyvinyl chloride, improved cellular, foamed-polymer products based on polyvinyl chloride and a process for producing said improved cellular foamed-polymer products
    Patent number: 8168293
    Abstract: Formulation for cellular, foamed-polymer product based on polyvinyl chloride, comprising: a polyvinyl chloride homopolymer having a K-value of from 60 to 85 and a pH value of the aqueous extract ranging of from 8 to 12; at least one isocyanate selected from isomers and homologues of diphenylmethane-4,4?-diisocyanate and modified diphenylmethane-4,4-diisocyanate s and mixtures thereof; at least one anhydride selected from the group of succinic anhydride, tetrahydrophthalic anhydride, hexahydrophthalic anhydride, methyl-tetrahydrophthalic anhydride, 4-methyl-hexahydrophthalic anhydride, cyclohexane-1,2-dicarboxylic anhydride, methyl-endomethylene tetrahydrophthalic anhydride, dodecenyl succinic anhydride, trimellitic anhydride and mixtures thereof; at least a surfactant; at least a foaming agent.
    Type: Grant
    Filed: June 5, 2007
    Date of Patent: May 1, 2012
    Assignee: Diab International AB
    Inventors: Leone Lauri, Sam Shehyee Ang, Jan Jerry Christian Stigsson, Raffaela Bressan
  • Formulations for Cellular, Foamed-Polymer Products Based on Polyvinyl Chloride,Improved Cellular, Foamed-Polymer Products Based on Polyvinyl Chloride and a Process for Producing Said Improved Cellular Foamed-Polymer Products
    Publication number: 20100068487
    Abstract: Formulation for cellular, foamed-polymer product based on polyvinyl chloride, comprising: a polyvinyl chloride homopolymer having a K-value of from 60 to 85 and a pH value of the aqueous extract ranging of from 8 to 12; at least one isocyanate selected from isomers and homologues of diphenylmethane-4,4?-diisocyanate and modified diphenylmethane-4,4-diisocyanate s and mixtures thereof; at least one anhydride selected from the group of succinic anhydride, tetrahydrophthalic anhydride, hexahydrophthalic anhydride, methyl-tetrahydrophthalic anhydride, 4-methyl-hexahydrophthalic anhydride, cyclohexane-1,2-dicarboxylic anhydride, methyl-endomethylene tetrahydrophthalic anhydride, dodecenyl succinic anhydride, trimellitic anhydride and mixtures thereof; at least a surfactant; at least a foaming agent.
    Type: Application
    Filed: June 5, 2007
    Publication date: March 18, 2010
    Inventors: Leone Lauri, Sam Shehyee Ang, Jan Jerry Christian Stigsson, Raffaela Bressan