Patents by Inventor David A. Babb

David A. Babb 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: 20210403527
    Abstract: The present invention provides isolated T cell receptors (TCRs) that specifically bind to an HLA-displayed New York Esophageal Squamous Cell Carcinoma-1 (NY-ESO-1) peptides, as well as therapeutic and diagnostic methods of using those isolated TCRs.
    Type: Application
    Filed: October 23, 2019
    Publication date: December 30, 2021
    Inventors: Robert Babb, Natalie Bowerman, Gang Chen, Cagan Gurer, Johanna Hansen, Wen-Yi Lee, Thomas Meagher, David Suh
  • Patent number: 11212100
    Abstract: Systems and methods for facilitating use of physical tokens in a transit system are disclosed. In one implementation, a method for facilitating use of physical tokens by a server includes generating a token identifier and generating, using a private key associated with the server, a cryptographic signature based on the token identifier. The method further includes transmitting the token identifier and the cryptographic signature to a token dispenser. The token dispenser is configured to dispense a physical token, and the physical token is configured to provide the token identifier and the cryptographic signature to a token validator.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: December 28, 2021
    Assignee: moovel North America, LLC
    Inventors: David Sharpe, William Derocher, Zachary Babb, Brian Young, Tim Roberts, Sopia Maletz, Matthew Rotter, Mitch Drew
  • Patent number: 11174348
    Abstract: A method of manufacturing a poly(ether-carbonate) polyol comprises a polymerization stage that includes polymerizing carbon dioxide and at least one alkylene oxide, with a starter, in the presence of a double metal cyanide polymerization catalyst and a catalyst promoter that is devoid of halide anions and cyanide. The catalyst promoter is separate from the double metal cyanide polymerization catalyst.
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: November 16, 2021
    Assignee: Dow Global Technologies LLC
    Inventors: Nima N. Nikbin, David A. Babb
  • Publication number: 20210347940
    Abstract: A method of manufacturing a poly(ether-carbonate) polyol comprises a polymerization stage that includes polymerizing carbon dioxide and at least one alkylene oxide, with a starter, in the presence of a double metal cyanide polymerization catalyst and a catalyst promoter that is devoid of halide anions and cyanide. The catalyst promoter is separate from the double metal cyanide polymerization catalyst.
    Type: Application
    Filed: July 23, 2021
    Publication date: November 11, 2021
    Inventors: Nima Nikbin, David A. Babb
  • Patent number: 11149117
    Abstract: Alkylene oxide polymerizations are performed in the presence of a double metal cyanide polymerization catalyst and certain magnesium, Group 3-Group 15 metal or lanthanide series metal compounds. The presence of the magnesium, Group 3-Group 15 metal or lanthanide series metal compound provides several benefits including more rapid catalyst activation, faster polymerization rates and the reduction in the amount of ultra high molecular weight polymers that are formed. The catalyst mixture is unexpectedly useful in making polyethers having low equivalent weights.
    Type: Grant
    Filed: March 14, 2019
    Date of Patent: October 19, 2021
    Assignee: Dow Global Technologies LLC
    Inventors: David S. Laitar, David A. Babb, Carlos M. Villa, Richard Keaton, Jean-Paul Masy
  • Publication number: 20210198425
    Abstract: Embodiments relate to a method of producing a modified double metal cyanide complex, a method of producing a monol or polyol that includes providing the modified double metal cyanide complex, an alkylene oxide polymerization process that includes providing the modified double metal cyanide complex, a batch, semi-batch, or continuous manufacturing process that includes providing the modified double metal cyanide complex, and a polyether polyol prepared using the batch, semi-batch, or continuous manufacturing process that includes providing the modified double metal cyanide complex.
    Type: Application
    Filed: May 10, 2018
    Publication date: July 1, 2021
    Inventors: David K. Steelman, David A. Babb, Joost Depicker, Jasmijn Kuijper, Mari S. Rosen
  • Patent number: 11041041
    Abstract: High resiliency polyurethane foam is made from a polyether polyol having an equivalent weight of at least 1000. At least a portion of the polyether polyol is one or more random copolymer(s) formed by polymerizing a mixture of 70 to 95% by weight propylene oxide and 5 to 30% by weight ethylene oxide onto an initiator compound. The random copolymer(s) has a nominal hydroxyl functionality of at least 5, a hydroxyl equivalent weight of at least 1500 g/equivalent and no more than 0.01 milliequivalents per gram of terminal unsaturation. The randomly polymerized propylene oxide and ethylene oxide constitute at least 80% of the total weight of the random copolymer. At least 70% of the hydroxyl groups of the random copolymer are secondary hydroxyls.
    Type: Grant
    Filed: September 15, 2016
    Date of Patent: June 22, 2021
    Assignee: Dow Global Technologies LLC
    Inventors: David A. Babb, Jean-Paul Masy
  • Publication number: 20210154656
    Abstract: Embodiments relate to a method of producing a modified double metal cyanide complex, a method of producing a monol or polyol that includes providing the modified double metal cyanide complex, an alkylene oxide polymerization process that includes providing the modified double metal cyanide complex, a batch, semi-batch, or continuous manufacturing process that includes providing the modified double metal cyanide complex, and a polyether polyol prepared using the batch, semi-batch, or continuous manufacturing process that includes providing the modified double metal cyanide complex.
    Type: Application
    Filed: May 10, 2018
    Publication date: May 27, 2021
    Inventors: David K. Steelman, David A. Babb, Joost Depicker, Jasmijn Kuijper, Mari S. Rosen
  • Patent number: 10767009
    Abstract: Polyether polyols are made by a process that includes a continuous addition of starter and alkylene oxide. The feed of starter is discontinued when 80 to 95% of the alkylene oxide has been fed to the reactor. This process produces a product with a narrow molecular weight distribution.
    Type: Grant
    Filed: June 20, 2016
    Date of Patent: September 8, 2020
    Assignee: Covestro LLC
    Inventors: Jean-Paul Masy, Carlos M. Villa, David A. Babb, John W. Weston, Sweta Somasi
  • Publication number: 20200255580
    Abstract: High resiliency polyurethane foam is made from a polyether polyol having an equivalent weight of at least 1000. At least a portion of the polyether polyol is one or more random copolymer(s) formed by polymerizing a mixture of 70 to 95% by weight propylene oxide and 5 to 30% by weight ethylene oxide onto an initiator compound. The random copolymer(s) has a nominal hydroxyl functionality of at least 5, a hydroxyl equivalent weight of at least 1500 g/equivalent and no more than 0.01 milliequivalents per gram of terminal unsaturation. The randomly polymerized propylene oxide and ethylene oxide constitute at least 80% of the total weight of the random copolymer. At least 70% of the hydroxyl groups of the random copolymer are secondary hydroxyls.
    Type: Application
    Filed: September 15, 2016
    Publication date: August 13, 2020
    Applicant: Dow Global Technologies LLC
    Inventors: David A. Babb, Jean-Paul Masy
  • Publication number: 20200255592
    Abstract: An alkylene oxide mixture containing greater than 50% by weight ethylene oxide is continuously polymerized in the presence of a double metal cyanide polymerization catalyst and an alkoxylated initiator having a hydroxyl equivalent weight of up to 200. The catalyst remains active, producing a polyol having an equivalent weight of up to 700 with a high oxyethylene content continuously at fast reaction rates.
    Type: Application
    Filed: August 20, 2018
    Publication date: August 13, 2020
    Inventors: Jean-Paul Masy, David A. Babb
  • Publication number: 20190309126
    Abstract: Polycarbonate polyols are made by copolymerizing carbon dioxide and an alkylene oxide in the presence of a starter compound and a carbonate catalyst. The process is operated in semi-batch mode by combining starter, catalyst and a small amount of alkylene oxide in a reaction vessel, pressurizing the vessel with carbon dioxide, initiating polymerization, and then feeding both carbon dioxide and alkylene oxide to the vessel under polymerization conditions without removal of product until the feeds are completed.
    Type: Application
    Filed: November 9, 2017
    Publication date: October 10, 2019
    Inventors: Nima Nikbin, David A. Babb
  • Patent number: 10435502
    Abstract: Embodiments of the present disclosure are directed to polyether-acetal polyol compositions, more particularly to polyol compositions including a polyether-acetal polyol that can be utilized to form polyurethanes. As an example, a polyurethane formulation can include a polyol composition including a polyether-acetal polyol functionalized with at least one acetal functional group, where the polyol composition has an average hydroxyl functionality from 2 to 8 and a hydroxyl equivalent weight from 150 to 4000, where the portion of the polyether-acetal polyol that is functionalized with the at least one acetal functional group is 1 percent to 40 percent of a total weight of the polyether-acetal polyol, where the polyether-acetal polyol has a primary hydroxyl group content of at least 55 percent, and a polyisocyanate, where the polyurethane formulation has an isocyanate index in a range from 70 to 500.
    Type: Grant
    Filed: January 8, 2016
    Date of Patent: October 8, 2019
    Assignee: Dow Global Technologies LLC
    Inventors: Arjun Raghuraman, William L. Heaner, David A. Babb, Manjiri R. Paradkar
  • Publication number: 20190256652
    Abstract: A method of manufacturing a poly(ether-carbonate) polyol comprises a polymerization stage that includes polymerizing carbon dioxide and at least one alkylene oxide, with a starter, in the presence of a double metal cyanide polymerization catalyst and a catalyst promoter that is devoid of halide anions and cyanide. The catalyst promoter is separate from the double metal cyanide polymerization catalyst.
    Type: Application
    Filed: November 9, 2017
    Publication date: August 22, 2019
    Inventors: Nima N. Nikbin, David A. Babb
  • Publication number: 20190211149
    Abstract: Alkylene oxide polymerizations are performed in the presence of a double metal cyanide polymerization catalyst and certain magnesium, Group 3-Group 15 metal or lanthanide series metal compounds. The presence of the magnesium, Group 3-Group 15 metal or lanthanide series metal compound provides several benefits including more rapid catalyst activation, faster polymerization rates and the reduction in the amount of ultra high molecular weight polymers that are formed. The catalyst mixture is unexpectedly useful in making polyethers having low equivalent weights.
    Type: Application
    Filed: March 14, 2019
    Publication date: July 11, 2019
    Inventors: David S. Laitar, David A. Babb, Carlos M. Villa, Richard Keaton, Jean-Paul Masy
  • Patent number: 10301419
    Abstract: Random poly(propylene oxide-co-ethylene oxide) polymers are made by polymerizing a mixture of propylene oxide and a small amount of ethylene oxide in the presence of a starter and a double metal cyanide catalyst complex, and then feeding in a mixture of propylene oxide and ethylene oxide while increasing the ethylene oxide concentration in the mixture to at least 90%. This produces a polyol suitable for making high resiliency polyurethane foam without need for adding an ethylene oxide cap.
    Type: Grant
    Filed: June 20, 2016
    Date of Patent: May 28, 2019
    Assignee: Dow Global Technologies LLC
    Inventors: Jean-Paul Masy, David A. Babb, Irena Amici-Kroutilova
  • Patent number: 10294322
    Abstract: The instant invention provides an isocyanate trimerization catalyst system, a precursor formulation, a process for trimerizing isocyanates, rigid foams made therefrom, and a process for making such foams. The trimerization catalyst system comprises: (a) a phosphatrane cation; and (b) an isocyanate-trimer inducing anion; wherein said trimerization catalyst system has a trimerization activation temperature in the range of equal to or less than 73° C. The precursor formulation comprises (1) at least 25 percent by weight of polyol, based on the weight of the precursor formulation; (2) less than 15 percent by weight of a trimerization catalyst system, based on the weight of the precursor formulation, comprising; (a) a phosphatrane cation; and (c) an isocyanate-trimer inducing anion; wherein said trimerization catalyst system has a trimerization activation temperature in the range of equal to or less than 73° C.
    Type: Grant
    Filed: June 13, 2017
    Date of Patent: May 21, 2019
    Assignee: Dow Global Technologies LLC
    Inventors: Phillip S. Athey, Nathan Wilmot, Richard J. Keaton, David A. Babb, Cecile Boyer, Timothy A. Morley
  • Patent number: 10233284
    Abstract: Alkylene oxide polymerizations are performed in the presence of a double metal cyanide polymerization catalyst and certain magnesium, Group 3-Group 15 metal or lanthanide series metal compounds. The presence of the magnesium, Group 3-Group 15 metal or lanthanide series metal compound provides several benefits including more rapid catalyst activation, faster polymerization rates and the reduction in the amount of ultra high molecular weight polymers that are formed. The catalyst mixture is unexpectedly useful in making polyethers having low equivalent weights.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: March 19, 2019
    Assignee: Dow Global Technologies LLC
    Inventors: David S. Laitar, David A. Babb, Carlos M. Villa, Richard Keaton, Jean-Paul Masy
  • Patent number: 10184026
    Abstract: Vinyl-functional alcohols are silylated by reaction with a hydrolysable silyl hydride compound. The starting alcohol is heated and then combined with the silyl hydride and catalyst and allowed to heat exothermically. Cooling is applied when the conversion of vinyl groups is between 90-99%. In some embodiments, specified amounts of water are present. The cooling regimen and control of water content reduces certain side reactions, leading to greater yields to desired product.
    Type: Grant
    Filed: December 5, 2015
    Date of Patent: January 22, 2019
    Assignee: Dow Global Technologies LLC
    Inventors: Rafael Benavides, David A. Babb, Matthias Schaefer, Patrick Fontanella, William H. Heath, Wenwen Li
  • Patent number: 10160830
    Abstract: An alkylene oxide mixture containing greater than 50% by weight ethylene oxide is continuously polymerized in the presence of a double metal cyanide polymerization catalyst and certain magnesium, Group 3-Group 15 metal or lanthanide series metal compounds. The presence of the magnesium, Group 3-Group 15 metal or lanthanide series metal compound permits the polymerization to be performed continuously without premature deactivation of the double metal cyanide catalyst.
    Type: Grant
    Filed: June 15, 2016
    Date of Patent: December 25, 2018
    Assignee: Dow Global Technologies LLC
    Inventors: David A. Babb, Jean-Paul Masy, Mattias Schaefer, William A. Koonce, Donald Cameron