Patents by Inventor Joseph E. Brew

Joseph E. Brew 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).

  • Multi-layer oriented heat sealable film structure of improved machinability
    Patent number: 6455150
    Abstract: A heat-sealable multilayer film comprising: (a) an upper heat-sealable layer comprising (I) an ethylene polymer, copolymer, or terpolymer and (ii) a particulate, crosslinked hydrocarbyl-substituted polysiloxane having a mean particle size of from about 0.5 &mgr;m to about 20.0 &mgr;m, as a combined slip agent and antiblocking agent; (b) an intermediate core layer comprising a propylene polymer; and (c) a lower heat-sealable layer consisting essentially of (I) an ethylene polymer, copolymer, or terpolymer, (ii) a particulate, crosslinked hydrocarbyl-substituted polysiloxane having a mean particle size of from about 0.5 &mgr;m to about 20.0 &mgr;m, as a combined slip agent and antiblocking agent; and (iii) from about 0.15 wt% to about 1.5 wt% of a liquid, hydrocarbyl-substituted polysiloxane. The upper heat-sealable sealable layer does not contain a liquid polysiloxane, but may have a coating of liquid polysiloxane transferred from the lower heat-sealable layer.
    Type: Grant
    Filed: December 9, 1993
    Date of Patent: September 24, 2002
    Inventors: Karen A. Sheppard, Jay Kin Keung, Francis Tran The-Dzuy, Joseph E. Brew, Benoit Ambroise