Patents by Inventor B. Joseph Scheve

B. Joseph Scheve 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).

  • High melt strength, propylene polymer, process for making it, and use thereof
    Patent number: 5731362
    Abstract: Disclosed is a normally solid, high molecular weight, gel-free, amorphous to predominantly crystalline, propylene polymer characterized by high melt strength due to strain hardening which is believed to be caused by free-end long chain branches of the molecular chains forming the polymer.Also disclosed is a process for making the polymer by high energy radiation of a normally solid, high molecular weight, linear, propylene polymer in a reduced active oxygen environment, maintaining the irradiated material in such environment for a specific period of time, and then deactivating free radicals in the material.Further disclosed is the use of the strain hardening polymer in extensional flow operations such as, for example, extrusion coating, film production, and thermoforming.
    Type: Grant
    Filed: November 4, 1993
    Date of Patent: March 24, 1998
    Assignee: Montell North America Inc.
    Inventors: B. Joseph Scheve, John W. Mayfield, Anthony J. DeNicola, Jr.
  • High melt strength, propylene polymer, process for making it, and use thereof
    Patent number: 5591785
    Abstract: Disclosed is a normally solid, high molecular weight, gel-free, amorphous to predominantly crystalline, propylene polymer characterized by high melt strength due to strain hardening which is believed to be caused by free-end long chain branches of the molecular chains forming the polymer.Also disclosed is a process for making the polymer by high energy radiation of a normally solid, high molecular weight, linear, propylene polymer in a reduced active oxygen environment, maintaining the irradiated material in such environment for a specific period of time, and then deactivating free radicals in the material.Further disclosed is the use of the strain hardening polymer in extensional flow operations such as, for example, extrusion coating, film production, and thermoforming.
    Type: Grant
    Filed: March 23, 1995
    Date of Patent: January 7, 1997
    Assignee: Montell North America Inc.
    Inventors: B. Joseph Scheve, John W. Mayfield, Anthony J. DeNicola, Jr.
  • High melt strength, propylene polymer, process for making it, and use thereof
    Patent number: 5554668
    Abstract: Disclosed is a normally solid, high molecular weight, gel-free, amorphous to predominantly crystalline, propylene polymer characterized by high melt strength due to strain hardening which is believed to be caused by free-end long chain branches of the molecular chains forming the polymer.Also disclosed is a process for making the polymer by high energy radiation of a normally solid, high molecular weight, linear, propylene polymer in a reduced active oxygen environment, maintaining the irradiated material in such environment for a specific period of time, and then deactivating free radicals in the material.Further disclosed is the use of the strain hardening polymer in extensional flow operations such as, for example, extrusion coating, film production, and thermoforming.
    Type: Grant
    Filed: August 31, 1994
    Date of Patent: September 10, 1996
    Assignee: Montell North America Inc.
    Inventors: B. Joseph Scheve, John W. Mayfield, Anthony J. DeNicola, Jr.
  • High melt strength, propylene polymer, process for making it, and use thereof
    Patent number: 4916198
    Abstract: Disclosed is a normally solid, high molecular weight, gel-free, amorphous to predominantly crystalline, propylene polymer characterized by high melt strength due to strain hardening which is believed to be caused by free-end long chain branches of the molecular chains forming the polymer.Also disclosed is a process for making the polymer by high energy radiation of a normally solid, high molecular weight, linear, propylene polymer in a reduced active oxygen environment, maintaining the irradiated material in such environment for a specific period of time, and then deactivating free radicals in the material.Further disclosed is the use of the strain hardening polymer in extensional flow operations such as, for example, extrusion coating, film production, and thermoforming.
    Type: Grant
    Filed: February 5, 1988
    Date of Patent: April 10, 1990
    Assignee: HIMONT Incorporated
    Inventors: B. Joseph Scheve, John W. Mayfield, Anthony J. DeNicola, Jr.