Patents by Inventor Sina Ebnesajjad

Sina Ebnesajjad 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).

  • Patent number: 7348377
    Abstract: A heat sealable tape of a copolymer of tetrafluoroethylene and at least about 15% by weight of a highly fluorinated monomer. The copolymer has a melt viscosity of no greater than about 1000 Pa·S at 372° C. and an application temperature of no greater than about 250° C. The invention further provides for a seam formed from two sections of sheet material, especially fabric, wherein each sheet has at least one fluoropolymer surface. The sections are sealed one to the other by application of heat sealable composition over one fluoropolymer surface of each section. The heat sealable composition comprises a copolymer of tetrafluoroethylene and at least about 15% by weight of a highly fluorinated monomer, the copolymer having a melt viscosity of no greater than about 1000 Pa·S at 372° C. and an application temperature of no greater than about 250° C.
    Type: Grant
    Filed: March 29, 2006
    Date of Patent: March 25, 2008
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Ronald Earl Uschold, Sina Ebnesajjad
  • Publication number: 20060186005
    Abstract: The present invention relates to a terminally sterilized package containing a liquid pharmaceutical, and comprising a receptacle having an opening therein for receiving the pharmaceutical and a closure adhered to the opening, wherein at least the interior surface of the receptacle is made of perfluoropolymer.
    Type: Application
    Filed: February 21, 2006
    Publication date: August 24, 2006
    Inventors: Sina Ebnesajjad, Ann Hriciga, Paul Brothers
  • Publication number: 20060167171
    Abstract: A heat sealable tape of a copolymer of tetrafluoroethylene and at least about 15% by weight of a highly fluorinated monomer. The copolymer has a melt viscosity of no greater than about 1000 Pa·S at 372° C. and an application temperature of no greater than about 250° C. The invention further provides for a seam formed from two sections of sheet material, especially fabric, wherein each sheet has at least one fluoropolymer surface. The sections are sealed one to the other by application of heat sealable composition over one fluoropolymer surface of each section. The heat sealable composition comprises a copolymer of tetrafluoroethylene and at least about 15% by weight of a highly fluorinated monomer, the copolymer having a melt viscosity of no greater than about 1000 Pa·S at 372° C. and an application temperature of no greater than about 250° C.
    Type: Application
    Filed: March 29, 2006
    Publication date: July 27, 2006
    Inventors: Ronald Uschold, Sina Ebnesajjad
  • Patent number: 7049365
    Abstract: A heat sealable tape of a copolymer of tetrafluoroethylene and at least about 15% by weight of a highly fluorinated monomer. The copolymer has a melt viscosity of no greater than about 1000 Pa·S at 372° C. and an application temperature of no greater than about 250° C. The invention further provides for a seam formed from two sections of sheet material, especially fabric, wherein each sheet has at least one fluoropolymer surface. The sections are sealed one to the other by application of heat sealable composition over one fluoropolymer surface of each section. The heat sealable composition comprises a copolymer of tetrafluoroethylene and at least about 15% by weight of a highly fluorinated monomer, the copolymer having a melt viscosity of no greater than about 1000 Pa·S at 372° C. and an application temperature of no greater than about 250° C.
    Type: Grant
    Filed: December 5, 2003
    Date of Patent: May 23, 2006
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Ronald Earl Uschold, Sina Ebnesajjad
  • Publication number: 20040138372
    Abstract: A heat sealable tape of a copolymer of tetrafluoroethylene and at least about 15% by weight of a highly fluorinated monomer. The copolymer has a melt viscosity of no greater than about 1000 Pa.S at 372° C. and an application temperature of no greater than about 250° C. The invention further provides for a seam formed from two sections of sheet material, especially fabric, wherein each sheet has at least one fluoropolymer surface. The sections are sealed one to the other by application of heat sealable composition over one fluoropolymer surface of each section. The heat sealable composition comprises a copolymer of tetrafluoroethylene and at least about 15% by weight of a highly fluorinated monomer, the copolymer having a melt viscosity of no greater than about 1000 Pa.S at 372° C. and an application temperature of no greater than about 250° C.
    Type: Application
    Filed: December 5, 2003
    Publication date: July 15, 2004
    Inventors: Ronald Earl Uschold, Sina Ebnesajjad
  • Patent number: 5888424
    Abstract: Fluoroplastics become identifiable as to source by incorporating 1 to 450 ppm of inorganic phosphor into the fluoroplastic which does not degrade the fluoroplastic upon processing at a temperature of 300.degree. C. and does not discolor the fluoroplastic but does emit radiation which is characteristic of the phosphor when the fluoroplastic is exposed to excitation radiation.
    Type: Grant
    Filed: July 24, 1997
    Date of Patent: March 30, 1999
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Sina Ebnesajjad, Vadim Leonidovitch Lichtchinski, Carmine Torardi, Robert Clayton Wheland
  • Patent number: 5683639
    Abstract: Sintering oven utilization is increased by completing the sintering cycle for a molded article of granular polytetrafluoroethylene outside of the oven inside an insulation shell.
    Type: Grant
    Filed: October 3, 1996
    Date of Patent: November 4, 1997
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Sina Ebnesajjad, Thomas Joseph Manista
  • Patent number: 5137775
    Abstract: Thin laminates of polyarylether ketone ketone and polyvinyl fluoride can be embossed without destruction of the polyvinyl fluoride and, on combustion, result in low smoke levels.
    Type: Grant
    Filed: May 30, 1991
    Date of Patent: August 11, 1992
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Robert F. Davis, Sina Ebnesajjad
  • Patent number: 4668453
    Abstract: Cospun yarn essentially free of mechanical defects comprising from about 30 to about 70 weight percent of poly(ethylene terepthalate) filaments containing a basic dye sensitizing unit and the remainder of the filaments being copolyamide filaments of hexamethylene adipamide and small amounts of carpoamide.
    Type: Grant
    Filed: February 15, 1985
    Date of Patent: May 26, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Sina Ebnesajjad, Eugene G. Jones