Patents by Inventor Toby M. Chapman

Toby M. Chapman 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: 7135598
    Abstract: A method of synthesizing a compound having the formula: comprising the step of: reacting a N-vinylformamide salt having the formula ?with a compound having the formula XR1R2; wherein X is Br, Cl or I, M is an alkali metal or an alkali earth metal, R1 is a C0–C25 alkylene group, a C0–C25 fluroalkylene group or a C0–C25 perfluoro alkylene group, R2 is H, provided R1 is not absent, an alkyl group, a fluroalkyl group, a perfluoroalkyl group, an aryl group, a hydroxy group, a polyether group, a heterocyclic group of 5 or 6 atoms wherein at least one of the atoms is not a carbon and is N, O, or S, —OR3, wherein, R3 is an alkyl group, a fluoroalkyl group, a perfluoroalkyl group, or an aryl group, —C(O)R4, —C(O)OR4, —OC(O)R4, —OC(O)R4, wherein R4 is an H, an alkyl group, a fluoroalkyl group, a perfluoroalkyl group, or an aryl group, a phthalimide group or NR5 R5 wherein R5 and R5 are independently H, —C(O)R4, an alkyl, a fluoroalkyl group, a perfluoroalkyl group or an aryl group.
    Type: Grant
    Filed: September 5, 2003
    Date of Patent: November 14, 2006
    Assignee: University of Pittsburgh
    Inventors: Eric J. Beckman, Toby M. Chapman, Lianjun Shi
  • Patent number: 7026511
    Abstract: A process to produce N-vinylformamide includes the steps of: reacting hydroxyethyl formamide with a reactant comprising at least one cyclic anhydride group to form an ester, and dissociating the ester via heat in a thin film evaporation to synthesize N-vinylformamide and a compound comprising at least one diacid group, the N-vinylformamide separating from the diacid during the thin film evaporation. The reactant including at least one cyclic anhydride group can, for example, be succinic anhydride, maleic anhydride, phthalic anhydride, (2-docecen-1-yl)succinic anhydride, exo-3,6-epoxy-1,2,3,6-tetrahydrophthalic anhydride or a polymer including at least one cyclic anhydride group.
    Type: Grant
    Filed: February 27, 2004
    Date of Patent: April 11, 2006
    Assignees: University of Pittsburgh, SNF SA
    Inventors: Eric J. Beckman, Toby M. Chapman, Cedrick Favero, Christopher C. Capelli, Harold E. Swift, William Eamon Carroll
  • Publication number: 20040186319
    Abstract: A process to produce N-vinylformamide includes the steps of: reacting hydroxyethyl formamide with a reactant including at least one cyclic anhydride group to form an ester, and dissociating (or cracking) the ester to synthesize N-vinylformamide and a compound including at least one diacid group. The ester can be dissociated using heat. The reactant including at least one cyclic anhydride group can, for example, be succinic anhydride, maleic anhydride, phthalic anhydride, a polymer including at least one cyclic anhydride group, or a solid support to which at least one cyclic anhydride group is covalently tethered. Preferably, the cyclic anhydride is regenerated from the diacid formed in the synthesis of the ester by heating the diacid to dehydrate the diacid. The temperature required to dehydrate diacid groups is preferably higher than the temperature use to dissociate the ester.
    Type: Application
    Filed: August 29, 2003
    Publication date: September 23, 2004
    Inventors: Eric J. Beckman, Toby M. Chapman, Cedrick Gilbert Favero, Christopher C. Capelli, Harold E. Swift
  • Publication number: 20040167338
    Abstract: A method of synthesizing a compound having the formula: 1
    Type: Application
    Filed: September 5, 2003
    Publication date: August 26, 2004
    Inventors: Eric J. Beckman, Toby M. Chapman, Lianjun Shi
  • Publication number: 20030026855
    Abstract: The present invention provides improved artificial blood fluids and microflow drag reducing factors for use in such fluids as well as the restoration and/or enhancement of microcirculation and tissue oxygenation. In accordance with preferred embodiments, artificial blood fluids with synthetic or natural oxygen carrying compounds are improved through the inclusion of small amounts of blood soluble microflow drag reducing factors. Microflow drag reducing factors may be combined with physiologically acceptable carriers to form fluids for the restoration and/or enhancement of microcirculation and tissue oxygenation. Physiologically acceptable carriers are preferred as those having a polyethylene glycol adjuvant. The concentration of microflow drag reducing factor is from about 0.1 ppm to about 10,000 ppm by weight of the blood fluid. Certain embodiments feature the employment of certain third and fourth generation dendritic polymers to improve emulsification of artificial blood fluids.
    Type: Application
    Filed: January 2, 2002
    Publication date: February 6, 2003
    Inventors: Marina V. Kameneva, Harvey S. Borovetz, Toby M. Chapman, Bartley P. Griffith, Brandon M. Repko