Patents by Inventor Charles Sfeir

Charles Sfeir 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).

  • Publication number: 20190240374
    Abstract: The invention relates to magnesium reinforcements and magnesium-reinforced barrier membranes for use in biomedical applications, such as dental, craniofacial and orthopedic applications. The magnesium reinforcements and barrier membranes are composed of a biodegradable, magnesium/polymer composite. They can be used in a wide variety of applications, such as, but not limited to, vertical and horizontal ridge augmentation, guided bone/tissue regeneration, periodontal bone regeneration, fracture fixation and orthopedic and spinal bone grafting applications; as well as in general surgery (hernia repair) and urogynecological surgery.
    Type: Application
    Filed: October 23, 2017
    Publication date: August 8, 2019
    Applicant: UNIVERSITY OF PITTSBURGH-OF THE COMMONWEALTH SYSTEM OF HIGHER EDUCATION
    Inventors: ANDREW BROWN, CHARLES SFEIR
  • Publication number: 20120143347
    Abstract: The invention relates to elastomeric, polymeric bone substitute compositions, methods for their preparation and their use in clinical applications, such as bone engineering and regeneration applications. The bone substitute compositions are osteoconductive in the absence of a biomolecule component. The bone substitute compositions are capable to regenerate bone in vitro or in vivo. The bone substitute compositions can be implanted into a bone defective site of a patient, and particularly, in the orthopedic, dental and caraniofacial areas of the patient.
    Type: Application
    Filed: December 2, 2011
    Publication date: June 7, 2012
    Applicant: University of Pittsburgh - Of The Commonwealth System Of Higher Education
    Inventors: Yadong Wang, Charles Sfeir
  • Patent number: 7776600
    Abstract: Provided is a method for production of nanocrystalline hydroxyapatite particles, and nanocrystalline hydroxyapatite particles produced according to the method. The nanocrystalline hydroxyapatite particles exhibit substantially superior cell transformation abilities as compared to known and commercially-available calcium phosphate kits. The nanocrystalline hydroxyapatite particles also find use in tissue engineering applications, for example bone and tooth engineering and repair applications.
    Type: Grant
    Filed: June 13, 2007
    Date of Patent: August 17, 2010
    Assignee: Carnegie Mellon University
    Inventors: Prashant N. Kumta, Charles Sfeir, Jeffrey Owen Hollinger, Daiwon Chol, Lee Weiss, Phil Campbell
  • Publication number: 20080095820
    Abstract: Provided is a method for production of nanocrystalline hydroxyapatite particles, and nanocrystalline hydroxyapatite particles produced according to the method. The nanocrystalline hydroxyapatite particles exhibit substantially superior cell transformation abilities as compared to known and commercially-available calcium phosphate kits. The nanocrystalline hydroxyapatite particles also find use in tissue engineering applications, for example bone and tooth engineering and repair applications.
    Type: Application
    Filed: June 13, 2007
    Publication date: April 24, 2008
    Inventors: Prashant Kumta, Charles Sfeir, Jeffrey Hollinger, Dalwon Chol, Lee Weiss, Phil Campbell
  • Patent number: 7247288
    Abstract: Provided is a method for production of nanocrystalline hydroxyapatite particles, and nanocrystalline hydroxyapatite particles produced according to the method. The nanocrystalline hydroxyapatite particles exhibit substantially superior cell transformation abilities as compared to known and commercially-available calcium phosphate kits. The nanocrystalline hydroxyapatite particles also find use in tissue engineering applications, for example bone and tooth engineering and repair applications.
    Type: Grant
    Filed: March 19, 2003
    Date of Patent: July 24, 2007
    Assignee: Carnegie Mellon University
    Inventors: Prashant N. Kumta, Charles Sfeir, Jeffrey Hollinger, Daiwon Choi, Lee Weiss, Phil Campbell
  • Publication number: 20070087959
    Abstract: A method of inducing biomineralization in a tissue, which method comprises administering to the tissue a source of Phosphophoryn (PP) in an amount sufficient to induce biomineralization; a method of treating tooth sensitivity or injured pulp tissue; a method of inducing differentiation of a cell into an osteogenic cell or odontogenic cell; a method of inducing bone or dentin regeneration; a method of inducing periodontal regeneration; a method of inducing differentiation of a cell into a cementoblast, osteoblast, or periodontal ligament cell; and a composition comprising a source of PP and a carrier.
    Type: Application
    Filed: August 19, 2004
    Publication date: April 19, 2007
    Applicants: University of Pittsburgh of the Commonwealth System of Higher Education, Carnegie Mellon University
    Inventors: Charles Sfeir, Phil Campbell, Julie Jadlowiec, Prashant Kumta
  • Publication number: 20030235564
    Abstract: A pharmaceutical composition comprising in combination the Runx2 protein, a polynucleotide encoding the Runx2 protein, or a cell that has been transformed with a polynucleotide encoding Runx2 protein, in a pharmaceutically acceptable carrier, the carrier comprising a bio-compatible, biodegradable polymeric matrix. Another aspect of the present invention includes a device comprising the above-described pharmaceutical composition in combination with a sterile and substantially antigen-free, pre-shaped allograft or xenograft bone implant. Also contemplated herein is a method for repairing a bone defect comprising administering to a mammalian patient at the site in need of treatment a pharmaceutical composition, comprising in combination the Runx2 protein, a polynucleotide encoding the Runx2 protein, or a cell that has been transformed with a polynucleotide encoding Runx2 protein, in a pharmaceutically acceptable carrier wherein the carrier is a bio-compatible, biodegradable polymeric matrix.
    Type: Application
    Filed: May 13, 2003
    Publication date: December 25, 2003
    Inventors: Bruce Doll, Huihua Fu, Jeffrey O. Hollinger, Charles Sfeir