Patents by Inventor Michael D. Wolkowicz

Michael D. Wolkowicz 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).

  • Preparation of transparent high density polyethylene sheets
    Patent number: 8029888
    Abstract: A transparent high density polyethylene (HDPE) sheet is disclosed. The sheet has a thickness greater than or equal to 0.05 mm and a bulk haze less than 2%. The HDPE resin is converted into a sheet by thermal processing and the sheet is then uniaxially oriented at a temperature above the melting point of the HDPE resin. The transparent HDPE sheet of the invention can be used for windows and plastic containers.
    Type: Grant
    Filed: June 30, 2008
    Date of Patent: October 4, 2011
    Assignee: Basell Polyolefine GmbH
    Inventors: Eike Kretzschmar, Michael D. Wolkowicz, Johannes-Friedrich Enderle, Dieter Lilge
  • Preparation of transparent high density polyethylene sheets
    Publication number: 20090324918
    Abstract: A transparent high density polyethylene (HDPE) sheet is disclosed. The sheet has a thickness greater than or equal to 0.05 mm and a bulk haze less than 2%. The HDPE resin is converted into a sheet by thermal processing and the sheet is then uniaxially oriented at a temperature above the melting point of the HDPE resin. The transparent HDPE sheet of the invention can be used for windows and plastic containers.
    Type: Application
    Filed: June 30, 2008
    Publication date: December 31, 2009
    Inventors: Eike Kretzschmar, Michael D. Wolkowicz, Johannes-Friedrich Enderle, Dieter Lilge
  • Method for making polyolefin nanocomposites
    Patent number: 6864308
    Abstract: A polyolefin nanocomposite is prepared by melt blending (a) a polyolefin and (b) a smectite clay in the presence of at least one intercalating agent that is a solid at room temperature and is selected from the group consisting of (a) hydroxy-substituted carboxylic acid esters, (b) amides, (c) hydroxy-substituted amides, and (d) oxidized polyolefins, wherein the ratio of the intercalating agent to the clay is at least 1:3, based on the ash content of the clay.
    Type: Grant
    Filed: June 13, 2002
    Date of Patent: March 8, 2005
    Assignee: Basell Poliolefine Italia S.p.A.
    Inventors: Jay S. Rosenthal, Michael D. Wolkowicz
  • Method for making polyolefin nanocomposites
    Publication number: 20030232912
    Abstract: A polyolefin nanocomposite is prepared by melt blending (a) a polyolefin and (b) a smectite clay in the presence of at least one intercalating agent that is a solid at room temperature and is selected from the group consisting of (a) hydroxy-substituted carboxylic acid esters, (b) amides, (c) hydroxy-substituted amides, and (d) oxidized polyolefins, wherein the ratio of the intercalating agent to the clay is at least 1:3, based on the ash content of the clay.
    Type: Application
    Filed: June 13, 2002
    Publication date: December 18, 2003
    Inventors: Jay S. Rosenthal, Michael D. Wolkowicz