Patents by Inventor James P. Parakka

James P. Parakka 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: 9770539
    Abstract: A composition comprising at least one polymer having the structure A-B-A?, wherein A and A? may be the same or different and each is a degradable polyester component and wherein B is the reaction product resulting from the reaction between a diol, having one or more pendant oligomeric or polymeric groups, and A and A?. Additionally, a bioresorbable patch comprising: (a) an adhesion barrier component comprising the composition in the form of a film; and (b) an adhesive component comprising (i) at least one synthetic adhesive polymer and/or (ii) at least one polysaccharide. Also, a method of wound healing, comprising administering the composition or apply the patch to a patient.
    Type: Grant
    Filed: February 25, 2016
    Date of Patent: September 26, 2017
    Assignee: DSM IP ASSETS BV
    Inventors: James P. Parakka, Ananth V. Iyer
  • Publication number: 20160175457
    Abstract: The present invention relates to a composition, such as a coating composition, comprising a peptide linked to a lubricant, wherein the peptide is cleavable by one or more proteinases present in tear fluid. The invention further relates to an ocular device comprising said composition, such as a preformed contact lens.
    Type: Application
    Filed: September 12, 2014
    Publication date: June 23, 2016
    Applicant: DSM IP ASSETS B.V.
    Inventors: Luppo EDENS, Peter Jan Leonard Mario QUAEDFLIEG, James P. PARAKKA, Petrus Johannes HERMSEN, Dennis HEEMSKERK, Michiel AKEROYD
  • Publication number: 20160166725
    Abstract: A composition comprising at least one polymer having the structure A-B-A?, wherein A and A? may be the same or different and each is a degradable polyester component and wherein B is the reaction product resulting from the reaction between a diol, having one or more pendant oligomeric or polymeric groups, and A and A?. Additionally, a bioresorbable patch comprising: (a) an adhesion barrier component comprising the composition in the form of a film; and (b) an adhesive component comprising (i) at least one synthetic adhesive polymer and/or (ii) at least one polysaccharide. Also, a method of wound healing, comprising administering the composition or apply the patch to a patient.
    Type: Application
    Filed: February 25, 2016
    Publication date: June 16, 2016
    Applicant: DSM IP ASSETS B.V.
    Inventors: James P. PARAKKA, Ananth V. IYER
  • Publication number: 20120095166
    Abstract: Polymers having the formula R(LE)X wherein R is a polymeric core having a number average molecular weight of from 5000 to 7,000,000 daltons and x endgroups, E is an endgroup that is covalently linked to polymeric core R by linkage L, L is a divalent oligomeric chain having at least 5 identical repeat units that is capable of self-assembly with L chains on adjacent molecules of the polymer, and the moieties (LE)X in the polymer may be the same as or different from one another. Monomers, oligomers, or other reactive structures otherwise analogous to known Self Assembled Monolayers but with at least one reactive chemical group capable of binding them to the terminus of a polymer, so that the thiol-free SAM analogue becomes the self-assembling surface modifying endgroup of that polymer, may be designed. Use of the polymer to fabricate a configured article from the surface-modified polymer or to fabricate a coating or topical treatment on an article made from another material.
    Type: Application
    Filed: October 14, 2011
    Publication date: April 19, 2012
    Inventors: Robert S. WARD, Keith R. McCREA, Yuan TIAN, James P. PARAKKA, Shanger WANG
  • Patent number: 7884171
    Abstract: Polymers whose surfaces are modified by endgroups that include amphipathic surface-modifying moieties. An amphipathic endgroup of a polymer molecule is an endgroup that contains at least two moieties of significantly differing composition, such that the amphipathic endgroup spontaneously rearranges its positioning in a polymer body to position the moiety on the surface of the body, depending upon the composition of the medium with which the body is in contact, when that re-positioning causes a reduction in interfacial energy. An example of an amphipathic surface-modifying endgroup is one that has both a hydrophobic moiety and a hydrophilic moiety in a single endgroup. For instance, a hydrophilic poly(ethylene oxide) terminated with a hydrophilic hydroxyl group is not surface active in air when the surface-modifying endgroup is bonded to a more hydrophobic base polymer.
    Type: Grant
    Filed: December 15, 2009
    Date of Patent: February 8, 2011
    Assignee: DSM IP Assets B.V.
    Inventors: Robert S. Ward, Keith R. McCrea, Yuan Tian, James P. Parakka
  • Publication number: 20100179284
    Abstract: Medical device, prosthesis, or packaging assembly made up of polymer body comprising at least one polymer having the formula R(LE)x wherein R is a polymeric core having a number average molecular weight of from 5000 to 7,000,000 daltons, and having x endgroups, x is an integer?1, E is an endgroup which is covalently linked to polymeric core R by linkage L, L is a divalent oligomeric chain which has at least 5 repeat units and which can self-assembly with L chains on adjacent molecules of the polymer, and moieties L and/or E in the polymer(s) may be the same as or different from one another in composition and/or molecular weight. The polymer body includes plural polymer molecules located internally within the body, at least some of which internal polymer molecules have endgroups that form a surface of the body. The surface endgroups include at least one self-assembling moiety.
    Type: Application
    Filed: May 28, 2008
    Publication date: July 15, 2010
    Applicant: DSM IP ASSETS B.V.
    Inventors: Robert S. Ward, Keith McCrea, Yuan Tian, Shanger Wang, Larry Jones, Anfeng Wang, James P. Parakka
  • Publication number: 20100113711
    Abstract: Polymers whose surfaces are modified by endgroups that include amphipathic surface-modifying moieties. An amphipathic endgroup of a polymer molecule is an endgroup that contains at least two moieties of significantly differing composition, such that the amphipathic endgroup spontaneously rearranges its positioning in a polymer body to position the moiety on the surface of the body, depending upon the composition of the medium with which the body is in contact, when that re-positioning causes a reduction in interfacial energy. An example of an amphipathic surface-modifying endgroup is one that has both a hydrophobic moiety and a hydrophilic moiety in a single endgroup. For instance, a hydrophilic poly(ethylene oxide) terminated with a hydrophilic hydroxyl group is not surface active in air when the surface-modifying endgroup is bonded to a more hydrophobic base polymer.
    Type: Application
    Filed: December 15, 2009
    Publication date: May 6, 2010
    Inventors: Robert S. Ward, Keith R. McCrea, Yuan Tian, James P. Parakka
  • Patent number: 7671162
    Abstract: Polymers whose surfaces are modified by endgroups that include amphipathic surface-modifying moieties. An amphipathic endgroup of a polymer molecule is an endgroup that contains at least two moieties of significantly differing composition, such that the amphipathic endgroup spontaneously rearranges its positioning in a polymer body to position the moiety on the surface of the body, depending upon the composition of the medium with which the body is in contact, when that re-positioning causes a reduction in interfacial energy. An example of an amphipathic surface-modifying endgroup is one that has both a hydrophobic moiety and a hydrophilic moiety in a single endgroup. For instance, a hydrophilic poly(ethylene oxide) terminated with a hydrophilic hydroxyl group is not surface active in air when the surface-modifying endgroup is bonded to a more hydrophobic base polymer.
    Type: Grant
    Filed: August 26, 2005
    Date of Patent: March 2, 2010
    Assignee: DSM IP Assets B.V.
    Inventors: Robert S. Ward, Keith R. McCrea, Yuan Tian, James P. Parakka
  • Publication number: 20090258048
    Abstract: Polymers having the formula R(LE)x wherein R is a polymeric core having a number average molecular weight of from 5000 to 7,000,000 daltons and having x endgroups, E is an endgroup covalently linked to polymeric core R by linkage L, L is a divalent oligomeric chain, having at least 5 identical repeat units, capable of self-assembly with L chains on adjacent molecules of the polymer, and the moieties (LE)x in the polymer may be the same as or different from one another. Design of monomers, oligomers, or other reactive structures otherwise analogous to known Self Assembled Monolayers but with at least one reactive chemical group capable of binding them to the terminus of a polymer, so that the thiol-free SAM analogue becomes the self-assembling surface modifying endgroup of that polymer. Use of the polymer to fabricate a configured article from the surface-modified polymer or a coating or topical treatment on an article made from another material.
    Type: Application
    Filed: December 7, 2006
    Publication date: October 15, 2009
    Applicant: The Polymer Technology Group, Inc.
    Inventors: Robert S. Ward, Keith R. McCrea, Yuan Tian, James P. Parakka, Shanger Wang