Patents by Inventor Paul O. Zamora

Paul O. Zamora 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: 7528105
    Abstract: The invention provides synthetic heparin-binding growth factor analogs having at least two different peptide growth factor analog chains, or alternatively two groups of two different peptide chains branched from branch moieties including trifunctional amino acid residues, the two groups separated by a first linker of from 3 to about 20 atoms, which peptide chain or chains bind a heparin-binding growth factor receptor and are covalently bound to a non-signaling peptide that includes a heparin-binding domain by a second linker, which may be a hydrophobic second linker. The synthetic heparin-binding growth factor analogs are useful as pharmaceutical agents, soluble biologics or as surface coatings for medical devices.
    Type: Grant
    Filed: February 10, 2005
    Date of Patent: May 5, 2009
    Assignees: BioSurface Engineering Technologies, Brookhaven Science Associates
    Inventors: Louis A. Pena, Paul O. Zamora, Xinhua Lin, Kazuyuki Takahashi
  • Patent number: 7482427
    Abstract: Compounds of the present invention of formula I and formula II are disclosed in the specification and wherein the compounds are modulators of Bone Morphogenic Protein activity. Compounds are synthetic peptides having a non-growth factor heparin binding region, a linker, and sequences that bind specifically to a receptor for Bone Morphogenic Protein. Uses of compounds of the present invention in the treatment of bone lesions, degenerative joint disease and to enhance bone formation are disclosed.
    Type: Grant
    Filed: February 22, 2005
    Date of Patent: January 27, 2009
    Assignees: BioSurface Engineering Technologies, Inc., Brookhaven Science Associates
    Inventors: Paul O. Zamora, Louis A. Pena, Xinhua Lin, Kazuyuki Takahashi
  • Patent number: 7468210
    Abstract: A thromboresistant coating for a medical device, method of coating and coated medical device, the coating including an in situ cross-linked co-polymer of a cross-linkable biomolecule, preferably an adsorbable biomolecule such as a heparin activity biomolecule with at least one prosthetic hydrophobic unit, and a multifunctional crosslinking agent, such as a bis-variant of polyethylene glycol, polyethylene oxide, or polyethylene glycol, wherein the crosslinking is by means of covalent complexation through at least two functional groups of the multifunctional crosslinking agent.
    Type: Grant
    Filed: December 10, 2003
    Date of Patent: December 23, 2008
    Assignee: BioSurface Engineering Technologies, Inc.
    Inventor: Paul O. Zamora
  • Publication number: 20080227696
    Abstract: A heparin-binding growth factor (HBGF) analog having two substantially similar sequences (homodimeric sequences) branched from a single amino acid residue, where the sequences are analogs of a particular HBGF that binds to a heparin-binding growth factor receptor (HBGFR), or alternatively that bind to a HBGFR without being an analog of any particular HBGF. The homodimeric sequences may be derived from any portion of a HBGF. The synthetic HBGF analog may be an analog of a hormone, a cytokine, a lymphokine, a chemokine or an interleukin, and may bind to any HBGFR. Further provided are preparations for medical devices, pharmaceutical compositions and methods of using the same.
    Type: Application
    Filed: February 21, 2006
    Publication date: September 18, 2008
    Applicant: BioSurface Engineering Technologies, Inc.
    Inventors: Kazuyuki Takahashi, Paul O. Zamora
  • Patent number: 7414028
    Abstract: The invention provides synthetic heparin-binding growth factor analogs of formulas I or II as given in the specification, having two peptide chains branched from a dipeptide branch moiety composed of at least one and preferably two trifunctional amino acid residues, which peptide chain or chains bind a heparin-binding growth factor receptor. The synthetic heparin-binding growth factor analogs are useful as pharmaceutical agents, soluble biologics or as surface coatings for medical devices.
    Type: Grant
    Filed: February 4, 2005
    Date of Patent: August 19, 2008
    Assignee: BioSurFace Engineering Technologies, Inc.
    Inventors: Paul O. Zamora, Louis A. Pena, Xinhua Lin
  • Publication number: 20080166392
    Abstract: Compounds of the present invention of formula I and formula II are disclosed in the specification and wherein the compounds are modulators of Bone Morphogenic Protein activity. Compounds are synthetic peptides having a non-growth factor heparin binding region, a linker, and sequences that bind specifically to a receptor for Bone Morphogenic Protein. Uses of compounds of the present invention in the treatment of bone lesions, degenerative joint disease and to enhance bone formation are disclosed.
    Type: Application
    Filed: January 31, 2008
    Publication date: July 10, 2008
    Inventors: Paul O. Zamora, Louis A. Pena, Xinhua Lin, Kazuyuki Takahashi
  • Publication number: 20080160169
    Abstract: A method for coating a medical device with a bioactive peptide comprising: providing a medical device to be coated with a bioactive peptide to a cylinder; attaching a syringe containing a bioactive peptide coating solution; introducing into the cylinder the bioactive peptide coating solution when the first valve of the connector and the second valve of the connector are open; incubating the medical device within the cylinder with the bioactive peptide coating solution; removing the bioactive peptide coating solution from the cylinder after the medical device is coated with the bioactive peptide.
    Type: Application
    Filed: December 21, 2007
    Publication date: July 3, 2008
    Inventors: Paul O. Zamora, Brent Lee Atkinson
  • Patent number: 7297343
    Abstract: A wound dressing, method of making, and method of use, utilizing a polymeric film having complexed thereto by hydrophobic interaction a construct including a polyanion covalently bonded to a hydrophobic prosthetic moiety, with one or more bioactive molecules directly complexed to the polyanion. The polyanion may be heparin or a heparin-activity molecule. The prosthetic group may include a hydrophobic silyl-containing moiety. Bioactive molecules include adhesive molecules, growth factor molecules, and therapeutic molecules, including antibiotics.
    Type: Grant
    Filed: October 10, 2003
    Date of Patent: November 20, 2007
    Assignee: BioSurface Engineering Technologies, Inc.
    Inventor: Paul O. Zamora
  • Patent number: 7217769
    Abstract: A medical device with a hydrophilic and lubricious coating, wherein the coating includes a hydrophilic polymeric unit layer deposited on the medical device and cross-linked with a plasma deposited double bond monomer. The hydrophilic polymeric unit can include ethylene oxide with one or more primary or secondary alcohol groups or glycosaminoglycans such as hyaluronic acid, and the double bond monomer includes monomers containing at least one double bond, preferably a C?C, C?N or C?O bond, including N-trimethylsilyl-allylamine, ethylene, propylene and allyl alcohol.
    Type: Grant
    Filed: July 16, 2004
    Date of Patent: May 15, 2007
    Assignee: BioSurface Engineering Technologies, Inc.
    Inventors: Paul O. Zamora, Meng Chen, Shigemasa Osaki, Ting-Ting Hsieh, Ray Tsang
  • Patent number: 6921811
    Abstract: The present invention provides a bioactive coating composition, method and devices for bodily fluid-contacting surfaces. The coating comprises a complex of Formula II: wherein R1 is an C1-18alkyl or C6-32aryl group, each R2 is independently selected from the group consisting of C1-18alkyl and C6-32aryl, R3 is N or O, n is a number from 1 to 10, and x in a number from 1 to about 30, directly bound to a heparin-activity molecule via covalent bonding, with one or more bioactive molecules bound to the heparin-activity molecule.
    Type: Grant
    Filed: July 31, 2001
    Date of Patent: July 26, 2005
    Assignee: BioSurface Engineering Technologies, Inc.
    Inventors: Paul O. Zamora, Ray Tsang, Shigemasa Osaki
  • Publication number: 20040258931
    Abstract: A medical device with a hydrophilic and lubricious coating, wherein the coating includes a hydrophilic polymeric unit layer deposited on the medical device and cross-linked with a plasma deposited double bond monomer. The hydrophilic polymeric unit can include ethylene oxide with one or more primary or secondary alcohol groups or glycosaminoglycans such as hyaluronic acid, and the double bond monomer includes monomers containing at least one double bond, preferably a C═C, C═N or C═O bond, including N-trimethylsilyl-allylamine, ethylene, propylene and allyl alcohol.
    Type: Application
    Filed: July 16, 2004
    Publication date: December 23, 2004
    Applicant: BioSurface Engineering Technologies, Inc.
    Inventors: Paul O. Zamora, Meng Chen, Shigemasa Osaki, Ting-Ting Hsieh, Ray Tsang
  • Publication number: 20040161442
    Abstract: The present invention provides a bioactive coating composition, method and devices for bodily fluid-contacting surfaces. The coating comprises a complex of Formula II: wherein R1 is an C1-18alkyl or C6-32aryl group, each R2 is independently selected from the group consisting of C1-18alkyl and C6-32aryl, R3 is N or O, n is a number from 1 to 10, and x in a number from 1 to about 30, directly bound to a heparin-activity molecule via covalent bonding, with one or more bioactive molecules bound to the heparin-activity molecule. The bioactive molecule may be an adhesive molecule such as fibronectin, a growth factor such as basic fibroblast growth factor, or any other bioactive molecule that binds, by any mechanism, to a heparin-activity molecule.
    Type: Application
    Filed: January 28, 2003
    Publication date: August 19, 2004
    Inventors: Paul O. Zamora, Ray Tsang, Shigemasa Osaki
  • Publication number: 20040151764
    Abstract: A wound dressing, method of making, and method of use, utilizing a polymeric film having complexed thereto by hydrophobic interaction a construct including a polyanion covalently bonded to a hydrophobic prosthetic moiety, with one or more bioactive molecules directly complexed to the polyanion. The polyanion may be heparin or a heparin-activity molecule. The prosthetic group may include a hydrophobic silyl-containing moiety. Bioactive molecules include adhesive molecules, growth factor molecules, and therapeutic molecules, including antibiotics.
    Type: Application
    Filed: October 10, 2003
    Publication date: August 5, 2004
    Applicant: BioSurface Engineering Technologies, Inc.
    Inventor: Paul O. Zamora
  • Patent number: 6765069
    Abstract: A method for making a hydrophilic and lubricious coating, the coating so made and a medical device including such coating, wherein the coating includes a hydrophilic polymeric unit layer cross-linked with a plasma deposited double bond monomer. The hydrophilic polymeric unit can include ethylene oxide with one or more primary or secondary alcohol groups or glycosaminoglycans such as hyaluronic acid, and the double bond monomer includes monomers containing at least one double bond, preferably a C═C, C═N or C═O bond, including N-trimethylsilyl-allylamine, ethylene, propylene and allyl alcohol. The invention also provides products containing such coatings and their uses in medical, pharmaceutical and cosmetic applications.
    Type: Grant
    Filed: September 27, 2002
    Date of Patent: July 20, 2004
    Assignee: BioSurface Engineering Technologies, Inc.
    Inventors: Paul O. Zamora, Meng Chen, Shigemas Osaki, Ting-Ting Hsieh, Ray Tsang
  • Publication number: 20040126596
    Abstract: Coatings, devices and methods are provided, wherein the contacting surface of a medical device with at least one contacting surface for contacting a bodily fluid or tissue is modified by plasma treatment in a plasma including nitrogen-containing molecules and oxygen-containing molecules and by application of a biologically compatible coating, preferably by plasma treatment in a plasma including polymerized hydrocyclosiloxane monomers. The nitrogen-containing molecules include NH3, (NH4)+, N2O, NO, NO2 and N2O4, and the oxygen-containing molecules include O2 and O3. The plasma-modified contacting surface exhibits decreased adhesion of at least some mammalian cells, such as platelets and leukocytes, decreased restenosis when used with stents, and increased apoptosis. Additional layers may be applied, including amine-providing groups such as N-trimethylsilyl-allylamine, polyoxyalkylene tethers, and bioactive compounds.
    Type: Application
    Filed: September 2, 2003
    Publication date: July 1, 2004
    Applicant: BioSurface Engineering Technologies, Inc.
    Inventors: Paul O. Zamora, Ray Tsang, Meng Chen
  • Publication number: 20040120892
    Abstract: The subject invention relates to the use of ascorbic acid and derivatives thereof in stabilizing radiolabeled proteins and peptides against oxidation loss of radiolabel and autoradiolysis. Ascorbic acid is added after radiolabeling, including any required incubation period, but prior to patient administration.
    Type: Application
    Filed: December 10, 2003
    Publication date: June 24, 2004
    Inventors: Paul O. Zamora, Michael J. Marek
  • Publication number: 20040087505
    Abstract: The invention provides synthetic heparin-binding growth factor analogs having at least one peptide chain, and preferably two peptide chains branched from a dipeptide branch moiety composed of two trifunctional amino acid residues, which peptide chain or chains bind a heparin-binding growth factor receptor and are covalently bound to a non-signaling peptide that includes a heparin-binding domain, preferably by a linker, which may be a hydrophobic linker. The synthetic heparin-binding growth factor analogs are useful as pharmaceutical agents, soluble biologics or as surface coatings for medical devices.
    Type: Application
    Filed: August 19, 2003
    Publication date: May 6, 2004
    Inventors: Louis A. Pena, Paul O. Zamora, Xinhua Lin, John D. Glass
  • Publication number: 20040058056
    Abstract: Methods, coatings and coated medical devices are provided, wherein a plasma-deposited aliphatic polymerized hydrocyclosiloxane membrane is deposited as a diffusion control barrier for a drug deliver component consisting of one or more therapeutic agents coated on a surface or contained within a matrix, preferably a polymeric matrix, coated on a surface. The plasma-polymerized hydrocyclosiloxane membrane coats all or substantially all of the drug delivery component in contact or communication with the exterior surface, such that all or substantially all of any drug or therapeutic agent must diffuse across the membrane in order to be released.
    Type: Application
    Filed: August 12, 2003
    Publication date: March 25, 2004
    Inventors: Shigemasa Osaki, Paul O. Zamora, Meng Chen
  • Patent number: 6685912
    Abstract: The subject invention relates to the use of ascorbic acid and derivatives thereof in stabilizing radiolabeled proteins and peptides against oxidation loss of radiolabel and autoradiolysis. Ascorbic acid is added after radiolabeling, including any required incubation period, but prior to patient administration.
    Type: Grant
    Filed: April 30, 2002
    Date of Patent: February 3, 2004
    Assignee: Rhomed Incorporated
    Inventors: Paul O. Zamora, Michael J. Marek
  • Patent number: 6613432
    Abstract: Coatings, devices and methods are provided, wherein the contacting surface of a medical device with at least one contacting surface for contacting a bodily fluid or tissue is modified by plasma treatment in a plasma comprising nitrogen-containing molecules and oxygen-containing molecules. The nitrogen-containing molecules include NH3, (NH4)+, N2O, NO, NO2 and N2O4, and the oxygen-containing molecules include O2 and O3. The plasma-modified contacting surface exhibits decreased adhesion of at least some mammalian cells, such as platelets and leukocytes, decreased restenosis when used with stents, and increased apoptosis. Additional layers may be applied, including plasma polymerized hydrocyclosiloxane monomers, amine-providing groups such as N-trimethylsilyl-allylamine, polyoxyalkylene tethers, and bioactive compounds.
    Type: Grant
    Filed: December 21, 2000
    Date of Patent: September 2, 2003
    Assignee: BioSurface Engineering Technologies, Inc.
    Inventors: Paul O. Zamora, Shigemasa Osaki, Meng Chen