Patents by Inventor Mark L. Kasakevich

Mark L. Kasakevich 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).

  • Method for improving processability of thermoplastics
    Patent number: 5889121
    Abstract: The use of a minor amount of poly-1-butene for improving the processability or extrusion efficiency of a metallocene-made thermoplastics, particularly metallocene-made low density polyethylene, by adding about 0.1-15 wt % of poly-1-butene to the metallocene-made thermoplastics which are melt incompatible with the poly-l-butene prior to processing.
    Type: Grant
    Filed: October 4, 1996
    Date of Patent: March 30, 1999
    Assignee: Shell Oil Company
    Inventors: Charles C. Hwo, Mark L. Kasakevich, Jerry W. Secrist
  • Adhesive for adhering polybutylene to metal
    Patent number: 5104733
    Abstract: A laminated structure comprising a polybutylene layer and a metal layer bonded together with an adhesive composition comprising an acid functionalized selectively hydrogenated block copolymer having at least one block which is predominantly a monoalkenyl aromatic hydrocarbon polymer block and at least one block which is a hydrogenated conjugated diolefin polymer block.
    Type: Grant
    Filed: February 23, 1990
    Date of Patent: April 14, 1992
    Assignee: Shell Oil Company
    Inventors: Mark L. Kasakevich, Jennifer L. Engle, David J. St. Clair
  • Method for improvement of polybutylene pipe strength
    Patent number: 5082613
    Abstract: A process is disclosed for the formation of polybutylene pipes having improved mechanical properties, by reduction in the rate of cooling of the extrudate used to form the pipe sections. Preferably, the ratio of the cooling bath residence time in minutes divided by the cooling water temperature in degrees Fahrenheit is selected to be in the range of from about 0.004 to about 0.010.
    Type: Grant
    Filed: July 23, 1990
    Date of Patent: January 21, 1992
    Assignee: Shell Oil Company
    Inventors: Mark L. Kasakevich, Donald H. Krasner, Jerry W. Secrist, Roland O. Meuhlner