Patents by Inventor Leah J. Langsdorf

Leah J. Langsdorf 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: 9051452
    Abstract: Embodiments in accordance with the present invention are directed to poly(lactide) compositions that are useful for forming temporary bonding layers that serve to releasably join a first substrate to a second substrate as well as methods of both forming such a temporary bond and methods of debonding such substrates. Some such poly(lactide) compositions encompass a casting solvent, a photoacid generator and optionally a sensitizer and/or an adhesion promoter.
    Type: Grant
    Filed: December 13, 2013
    Date of Patent: June 9, 2015
    Assignee: PROMERUS, LLC
    Inventors: Larry F Rhodes, Leah J Langsdorf, Venkat Dukkipati
  • Publication number: 20140102631
    Abstract: Embodiments in accordance with the present invention are directed to poly(lactide) compositions that are useful for forming temporary bonding layers that serve to releasably join a first substrate to a second substrate as well as methods of both forming such a temporary bond and methods of debonding such substrates. Some such poly(lactide) compositions encompass a casting solvent, a photoacid generator and optionally a sensitizer and/or an adhesion promoter.
    Type: Application
    Filed: December 13, 2013
    Publication date: April 17, 2014
    Applicant: Promerus, LLC
    Inventors: Larry F. Rhodes, Leah J. Langsdorf, Venkat Dukkipati
  • Patent number: 8678203
    Abstract: Embodiments in accordance with the present invention provide forming polynorbornenes useful for forming pervaporation membranes, the membranes themselves and methods of making such membranes.
    Type: Grant
    Filed: May 21, 2013
    Date of Patent: March 25, 2014
    Assignee: Promerus, LLC
    Inventors: Brian Knapp, Edmund Elce, Brian Bedwell, Leah J. Langsdorf, Ryan Wilks
  • Patent number: 8633259
    Abstract: Embodiments in accordance with the present invention are directed to polymer compositions that are useful for forming temporary bonding layers that serve to releasably join a first substrate to a second substrate as well as methods of both forming such a temporary bond and methods of debonding such substrates. Some such polymer compositions encompass a casting solvent, a photoacid generator and optionally a sensitizer and/or an adhesion promoter.
    Type: Grant
    Filed: December 29, 2011
    Date of Patent: January 21, 2014
    Assignee: Promerus, LLC
    Inventors: Larry F. Rhodes, Leah J. Langsdorf, Venkat Ram Dukkipati
  • Publication number: 20130292872
    Abstract: Embodiments in accordance with the present invention provide forming polynorbornenes useful for forming pervaporation membranes, the membranes themselves and methods of making such membranes.
    Type: Application
    Filed: May 21, 2013
    Publication date: November 7, 2013
    Inventors: Brian Knapp, Edmund Elce, Brian Bedwell, Leah J. Langsdorf, Ryan Wilks
  • Publication number: 20120283404
    Abstract: Embodiments in accordance with the present invention provide forming polynorbornenes useful for forming pervaporation membranes, the membranes themselves and methods of making such membranes.
    Type: Application
    Filed: June 26, 2012
    Publication date: November 8, 2012
    Applicant: PROMERUS LLC
    Inventors: Brian Knapp, Edmund Elce, Brian Bedwell, Leah J. Langsdorf, Ryan Wilks
  • Patent number: 8215496
    Abstract: Embodiments in accordance with the present invention provide forming polynorbornenes useful for forming pervaporation membranes, the membranes themselves and methods of making such membranes.
    Type: Grant
    Filed: January 27, 2009
    Date of Patent: July 10, 2012
    Assignee: Promerus LLC
    Inventors: Brain Knapp, Edmund Elce, Brian Bedwell, Leah J. Langsdorf, Ryan Wilks
  • Publication number: 20120172479
    Abstract: Embodiments in accordance with the present invention are directed to polymer compositions that are useful for forming temporary bonding layers that serve to releasably join a first substrate to a second substrate as well as methods of both forming such a temporary bond and methods of debonding such substrates. Some such polymer compositions encompass a casting solvent, a photoacid generator and optionally a sensitizer and/or an adhesion promoter.
    Type: Application
    Filed: December 29, 2011
    Publication date: July 5, 2012
    Applicant: PROMERUS LLC
    Inventors: Larry F. Rhodes, Leah J. Langsdorf, Venkat Ram Dukkipati
  • Patent number: 7612146
    Abstract: The present invention relates to polycyclic polymers, methods for producing polycyclic polymers, and methods for their use as photoresists in the manufacture of integrated circuits. In one embodiment, the present invention relates to photoresist compositions formed from the polymerization of at least one halogenated polycyclic monomer or hydrohalogenated polycyclic monomer. In another embodiment, the present invention relates to photoresist compositions formed from the co-polymerization of at least one halogenated polycyclic monomer or hydrohalogenated polycyclic monomer with at least one non-halogenated polycyclic monomer.
    Type: Grant
    Filed: September 7, 2005
    Date of Patent: November 3, 2009
    Assignee: Sumitomo Bakelite Co., Ltd.
    Inventors: Larry F. Rhodes, Richard Vicari, Leah J. Langsdorf, Andrew A. Sobek, Edwin P. Boyd, Brian Bennett
  • Patent number: 7608382
    Abstract: A photoresist composition encompassing a polymer having at least one polycyclic olefin repeat unit having a desired exo mole percent is provided, where the repeat unit is derived from a polycyclic olefin monomer having the desired exo mole percent. Such polymers having such repeat units having a desired exo mole percent offer control of differential dissolution rate and hence provide enhanced imaging properties. Exemplary monomers having a desired exo mole percent are also provided.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: October 27, 2009
    Assignees: Promerus LLC, International Business Machines Corporation
    Inventors: Larry F. Rhodes, Chun Chang, Leah J. Langsdorf, Howard A. Sidaway, Hiroshi Ito
  • Publication number: 20090188863
    Abstract: Embodiments in accordance with the present invention provide forming polynorbornenes useful for forming pervaporation membranes, the membranes themselves and methods of making such membranes.
    Type: Application
    Filed: January 27, 2009
    Publication date: July 30, 2009
    Applicant: PROMERUS LLC
    Inventors: Brain Knapp, Edmund Elce, Brian Bedwell, Leah J. Langsdorf, Ryan Wilks
  • Publication number: 20080124651
    Abstract: A photoresist composition encompassing a polymer having at least one polycyclic olefin repeat unit having a desired exo mole percent is provided, where the repeat unit is derived from a polycyclic olefin monomer having the desired exo mole percent. Such polymers having such repeat units having a desired exo mole percent offer control of differential dissolution rate and hence provide enhanced imaging properties.
    Type: Application
    Filed: October 31, 2007
    Publication date: May 29, 2008
    Applicants: International Business Machines Corporation, Promerus LLC
    Inventors: Larry F. Rhodes, Chun Chang, Leah J. Langsdorf, Howard A. Sidaway, Hiroshi Ito
  • Patent number: 7341816
    Abstract: A photoresist composition encompassing a polymer having at least one polycyclic olefin repeat unit having a desired exo mole percent is provided, where the repeat unit is derived from a polycyclic olefin monomer having the desired exo mole percent. Such polymers having such repeat units having a desired exo mole percent offer control of differential dissolution rate and hence provide enhanced imaging properties. Exemplary monomers having a desired exo mole percent are also provided.
    Type: Grant
    Filed: February 20, 2004
    Date of Patent: March 11, 2008
    Assignees: Promerus, LLC, International Business Machines Corporation
    Inventors: Larry F. Rhodes, Chun Chang, Leah J. Langsdorf, Howard A. Sidaway, Hiroshi Ito
  • Patent number: 6949609
    Abstract: The present invention relates to polycyclic polymers, methods for producing polycyclic polymers, and methods for their use as photoresists in the manufacture of integrated circuits. In one embodiment, the present invention relates to photoresist compositions formed from the polymerization of at least one halogenated polycyclic monomer or hydrohalogenated polycyclic monomer. In another embodiment, the present invention relates to photoresist compositions formed from the co-polymerization of at least one halogenated polycyclic monomer or hydrohalogenated polycyclic monomer with at least one non-halogenated polycyclic monomer. Additionally, the present invention relates to methods by which to post-treat such photoresist compositions in order to obtain one or more of: (1) a reduction in optical density of the polymer composition; and (2) a reduction in the amount of residual metal and/or monomer in the polymer composition.
    Type: Grant
    Filed: December 12, 2002
    Date of Patent: September 27, 2005
    Assignee: Sumitomo Bakelite Co., Ltd.
    Inventors: Larry F. Rhodes, Richard Vicari, Leah J. Langsdorf, Andrew A. Sobek, Edwin P. Boyd, Brian Bennett
  • Publication number: 20040166436
    Abstract: A photoresist composition encompassing a polymer having at least one polycyclic olefin repeat unit having a desired exo mole percent is provided, where the repeat unit is derived from a polycyclic olefin monomer having the desired exo mole percent. Such polymers having such repeat units having a desired exo mole percent offer control of differential dissolution rate and hence provide enhanced imaging properties.
    Type: Application
    Filed: February 20, 2004
    Publication date: August 26, 2004
    Inventors: Larry F. Rhodes, Chun Chang, Leah J. Langsdorf, Howard A. Sidaway, Hiroshi Ito
  • Publication number: 20030176583
    Abstract: The present invention relates to polycyclic polymers, methods for producing polycyclic polymers, and methods for their use as photoresists in the manufacture of integrated circuits. In one embodiment, the present invention relates to photoresist compositions formed from the polymerization of at least one halogenated polycyclic monomer or hydrohalogenated polycyclic monomer. In another embodiment, the present invention relates to photoresist compositions formed from the co-polymerization of at least one halogenated polycyclic monomer or hydrohalogenated polycyclic monomer with at least one non-halogenated polycyclic monomer.
    Type: Application
    Filed: December 12, 2002
    Publication date: September 18, 2003
    Inventors: Larry F. Rhodes, Richard Vicari, Leah J. Langsdorf, Andrew A. Sobek, Edwin P. Boyd, Brian Bennett
  • Patent number: 6299715
    Abstract: Laminated carpeting consisting of a secondary backing adhered to a greige good of yarn tufted into a primary backing are prepared from polyurethane adhesives by single puddle processes which allow for lowered use of polyurethane while producing carpets exhibiting excellent delamination strength. Preferably, a reactive polyurethane system is employed as a primary adhesive, and the secondary backing is skip-coated with a minor amount of a non-advancing skip coat.
    Type: Grant
    Filed: July 14, 1998
    Date of Patent: October 9, 2001
    Assignee: Bayer Antwerp N.V.
    Inventors: Leah J. Langsdorf, Jeffrey L. Robbins, Ulrich B. Holeschovsky, Harry Stefanou, Barry V. Evangelist, Robert D. Duffy, Gary L. Allen
  • Patent number: 5844070
    Abstract: A process for activating double metal cyanide catalysts is disclosed. A polyol starter or starter/catalyst mixture is heated under vacuum under conditions effective to achieve improved stripping compared with that which can be achieved through conventional vacuum stripping. Coupling vacuum stripping with inert gas sparging or stripping in the presence of an organic solvent gives a starter/catalyst mixture that activates rapidly in an epoxide polymerization process. Rapid activation makes process start-ups reliable and reduces cycle time. The process gives polyols with lower viscosity, lower polydispersity, and lower unsaturation for better polyurethanes.
    Type: Grant
    Filed: May 16, 1997
    Date of Patent: December 1, 1998
    Assignee: Arco Chemical Technology, L.P.
    Inventors: John E. Hayes, Leah J. Langsdorf, Bruce H. Isaacs, Fred J. Armellini
  • Patent number: 5792829
    Abstract: Polyurethane elastomers exhibiting improved green strength while maintaining short demold times are prepared from ultra-low unsaturation polyoxypropylene polyols containing up to 20 weight percent internal random oxyethylene moieties. The elastomers adsorb less than 10 weight percent water at 0.degree. C. The internal polyoxyethylene moiety-containing polyoxypropylene polyols may be used to prepare ultra-low unsaturation polyoxyethylene capped polyols which are haze-free and which may be used to prepare haze-free 4,4'-MDI prepolymers. Multidisperse blends of monodisperse internal oxyethylene moiety-containing polyoxypropylene polyols of ultra-low unsaturation provide yet further improvements in elastomer processing.
    Type: Grant
    Filed: June 3, 1997
    Date of Patent: August 11, 1998
    Assignee: ARCO Chemical Technology, L.P.
    Inventors: Gary L. Allen, Nigel Barksby, Bruce H. Isaacs, Leah J. Langsdorf, Stephen D. Seneker