Patents by Inventor Michael Robert Stephans

Michael Robert Stephans 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).

  • Composition comprising semi-crystalline polyolefin and sulfonyl-azide, resulting foams and methods of making the same
    Patent number: 10669413
    Abstract: A foamable composition includes a semi-crystalline polyolefin having a crystallinity of at least 50% and a poly(sulfonyl azide) of at least 500 ppm based on the total weight of the foamable composition. The foamable composition has a melt strength of at least 20 cN, a melt drawability of at least 100 mm/s, flexural modulus is greater than about 240,000 psi. Such a composition can be used to make a low density foam having a density in the range from 0.005 g/cm3 to 0.6 g/cm3. A resulting foam or a fabricated article, the methods of the composition and the foam are also provided.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: June 2, 2020
    Assignee: Braskem America, Inc.
    Inventors: Kimberly Miller McLoughlin, William Scott Miller, Michael Robert Stephans, Steven Michael Krupinski
  • Modified polypropylene and polymer blends thereof
    Patent number: 10584237
    Abstract: A propylene-based polymer composition is characterized by a melt strength at 190° C. of at least 20 cN, a melt drawability at 190° C. of at least 100 mm/s, and a flexural modulus at room temperature of at least 240,000 psi. The propylene-based polymer composition includes a propylene-based polymer resin having a crystallinity of at least 50% coupled with a poly(sulfonyl azide).
    Type: Grant
    Filed: January 15, 2016
    Date of Patent: March 10, 2020
    Assignee: Braskem America, Inc.
    Inventors: Elliot Carnevale, Riley Stevens, Kimberly Miller McLoughlin, William Scott Miller, Michael Robert Stephans, Steven Michael Krupinski
  • MODIFIED POLYPROPYLENE AND POLYMER BLENDS THEREOF
    Publication number: 20180022906
    Abstract: A propylene-based polymer composition is characterized by a melt strength at 190° C. of at least 20 cN, a melt drawability at 190° C. of at least 100 mm/s, and a flexural modulus at room temperature of at least 240,000 psi. The propylene-based polymer composition includes a propylene-based polymer resin having a crystallinity of at least 50% coupled with a poly(sulfonyl azide).
    Type: Application
    Filed: January 15, 2016
    Publication date: January 25, 2018
    Inventors: Elliot Carnevale, Riley Stevens, Kimberly Miller McLoughlin, William Scott Miller, Michael Robert Stephans, Steven Michael Krupinski
  • COMPOSITION COMPRISING SEMI-CRYSTALLINE POLYOLEFIN AND SULFONYL-AZIDE, RESULTING FOAMS AND METHODS OF MAKING THE SAME
    Publication number: 20160222180
    Abstract: A foamable composition includes a semi-crystalline polyolefin having a crystallinity of at least 50% and a poly(sulfonyl azide) of at least 500 ppm based on the total weight of the foamable composition. The foamable composition has a melt strength of at least 20 cN, a melt drawability of at least 100 mm/s, flexural modulus is greater than about 240,000 psi. Such a composition can be used to make a low density foam having a density in the range from 0.005 g/cm3 to 0.6 g/cm3. A resulting foam or a fabricated article, the methods of the composition and the foam are also provided.
    Type: Application
    Filed: January 29, 2016
    Publication date: August 4, 2016
    Applicant: Braskem America, Inc.
    Inventors: Kimberly Miller McLoughlin, William Scott Miller, Michael Robert Stephans, Steven Michael Krupinski
  • Resin compositions for producing biaxially oriented polypropylene films
    Patent number: 6733898
    Abstract: Polypropylene resin compositions are provided that are useful in the production of biaxially oriented polypropylene films (BOPPs). The resins of the present invention are blends of high crystalline (low solubles) polypropylene homopolymer and an ethylene/propylene random copolymer (RCP). These blends can be used to replace standard high solubles BOPP grade polypropylene homopolymers. In addition, the use of high crystalline polypropylene homopolymers in the blends imparts improved stiffness to the finished films while maintaining good processability of the blends.
    Type: Grant
    Filed: August 27, 2002
    Date of Patent: May 11, 2004
    Assignee: Sunoco Inc.
    Inventors: Sehyun Kim, Michael Robert Stephans
  • Resin compositions for producing biaxially oriented polypropylene films
    Publication number: 20040041299
    Abstract: Polypropylene resin compositions are provided that are useful in the production of biaxially oriented polypropylene films (BOPPs). The resins of the present invention are blends of high crystalline (low solubles) polypropylene homopolymer and an ethylene/propylene random copolymer (RCP). These blends can be used to replace standard high solubles BOPP grade polypropylene homopolymers. In addition, the use of high crystalline polypropylene homopolymers in the blends imparts improved stiffness to the finished films while maintaining good processability of the blends.
    Type: Application
    Filed: August 27, 2002
    Publication date: March 4, 2004
    Inventors: Sehyun Kim, Michael Robert Stephans