Patents by Inventor David Walsh

David Walsh 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: 20150376106
    Abstract: This present invention relates to an improved process to prepare prostacyclin derivatives. One embodiment provides for an improved process to convert benzindene triol to treprostinil via salts of treprostinil and to purify treprostinil.
    Type: Application
    Filed: September 10, 2015
    Publication date: December 31, 2015
    Applicant: United Therapeutics Corporation
    Inventors: Hitesh BATRA, Sudersan M. TULADHAR, Raju PENMASTA, David A. WALSH
  • Patent number: 9210276
    Abstract: A system and method for aggregating services within a VoIP network. The VoIP network comprises a plurality of vendors, resellers, and users, and each reseller aggregates a plurality of services from the vendors and other resellers. Each type of service may be organized into two or more tiers, with each tier including one or more services. Each tier is presented to downstream users as a single price and is re-branded with the reseller's branding elements. Downstream users can select a desired service from a given tier, and the tier may automatically select a service that maximizes the profit for the reseller.
    Type: Grant
    Filed: August 12, 2013
    Date of Patent: December 8, 2015
    Assignee: AQUIFER INNOVATIONS, LLC
    Inventors: Evin Hunt, David Walsh, Chris Murphy, Eric Maginniss
  • Publication number: 20150313601
    Abstract: A surgical clip applier having an adjustable jaw open dimension, including an instrument body having jaws at a distal end and an actuator at a proximal end; an actuator shaft movable longitudinally relative to the instrument body to transmit actuating force from the actuator to the jaws; and an adjusting member threadedly engaged with the actuator shaft and configured to engage the instrument body at a jaw open position, wherein rotation of the adjusting member relative to the actuating shaft moves the adjusting member longitudinally relative to the actuating shaft to adjust a jaw open position of the jaws when the adjusting member contacts the instrument body.
    Type: Application
    Filed: April 28, 2015
    Publication date: November 5, 2015
    Applicant: VITALITEC INTERNATIONAL, INC.
    Inventors: David A. Walsh, Wayne Robert Knupp, JR., Robert Swierczek
  • Publication number: 20150299091
    Abstract: This present invention relates to an improved process to prepare prostacyclin derivatives. One embodiment provides for an improved process to convert benzindene triol to treprostinil via salts of treprostinil and to purify treprostinil.
    Type: Application
    Filed: June 30, 2015
    Publication date: October 22, 2015
    Applicant: United Therapeutics Corporation
    Inventors: Hitesh Batra, Sudersan M. Tuladhar, Raju Penmasta, David A. Walsh
  • Patent number: 9156786
    Abstract: This present invention relates to an improved process to prepare prostacyclin derivatives. One embodiment provides for an improved process to convert benzindene triol to treprostinil via salts of treprostinil and to purify treprostinil.
    Type: Grant
    Filed: July 2, 2013
    Date of Patent: October 13, 2015
    Assignee: United Therapeutics Corporation
    Inventors: Hitesh Batra, Sudersan M. Tuladhar, Raju Penmasta, David A. Walsh
  • Publication number: 20150105582
    Abstract: The present invention is directed to a novel method for preparing a synthetic intermediates for treprostinil. Also described are methods of preparing treprostinil comprising utilizing novel intermediates described herein as well as novel intermediates useful for synthesis prostacyclin derivatives, such as treprostinil.
    Type: Application
    Filed: December 16, 2014
    Publication date: April 16, 2015
    Applicant: United Therapeutics Corporation
    Inventors: Hitesh Batra, Raju Penmasta, Vijay Sharma, Sudersan M. Tuladhar, David A. Walsh
  • Patent number: 8966664
    Abstract: A wearable aid for gripping an item by hand includes a main body shaped to be worn by a user, a strap connected to a first location of the main body and a releasable retaining means at a second location of the main body that is away from the first location. When a user wearing the aid has engaged an item to be gripped, part of the strap can be passed over at least part of one or more fingers of the user's hand and secured to the releasable retaining means in a manner that aids the user in gripping the item.
    Type: Grant
    Filed: June 11, 2011
    Date of Patent: March 3, 2015
    Assignee: Gripaid Limited
    Inventor: Stuart David Walsh
  • Patent number: 8940930
    Abstract: The present invention is directed to a novel method for preparing a synthetic intermediates for treprostinil. Also described are methods of preparing treprostinil comprising utilizing novel intermediates described herein as well as novel intermediates useful for synthesis prostacyclin derivatives, such as treprostinil.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: January 27, 2015
    Assignee: United Therapeutics Corporation
    Inventors: Hitesh Batra, Raju Penmasta, Vijay Sharma, Sudersan M. Tuladhar, David A. Walsh
  • Patent number: 8748657
    Abstract: This present invention relates to an improved process to prepare prostacyclin derivatives. One embodiment provides for an improved process to convert benzindene triol to treprostinil via salts of treprostinil and to purify treprostinil.
    Type: Grant
    Filed: June 5, 2013
    Date of Patent: June 10, 2014
    Assignee: United Therapeutics Corporation
    Inventors: Hitesh Batra, Sudersan M. Tuladhar, Raju Penmasta, David A. Walsh
  • Publication number: 20140064154
    Abstract: A system and method for aggregating services within a VoIP network. The VoIP network comprises a plurality of vendors, resellers, and users, and each reseller aggregates a plurality of services from the vendors and other resellers. Each type of service may be organized into two or more tiers, with each tier including one or more services. Each tier is presented to downstream users as a single price and is re-branded with the reseller's branding elements. Downstream users can select a desired service from a given tier, and the tier may automatically select a service that maximizes the profit for the reseller.
    Type: Application
    Filed: August 12, 2013
    Publication date: March 6, 2014
    Applicant: ORISHA HOLDINGS, L.L.C.
    Inventors: Evin Hunt, David Walsh, Chris Murphy, Eric Maginniss
  • Publication number: 20130289304
    Abstract: This present invention relates to an improved process to prepare prostacyclin derivatives. One embodiment provides for an improved process to convert benzindene triol to treprostinil via salts of treprostinil and to purify treprostinil.
    Type: Application
    Filed: July 2, 2013
    Publication date: October 31, 2013
    Inventors: Hitesh Batra, Sudersan M. Tuladhar, Raju Penmasta, David A. Walsh
  • Publication number: 20130267734
    Abstract: This present invention relates to an improved process to prepare prostacyclin derivatives. One embodiment provides for an improved process to convert benzindene triol to treprostinil via salts of treprostinil and to purify treprostinil.
    Type: Application
    Filed: June 5, 2013
    Publication date: October 10, 2013
    Inventors: Hitesh Batra, Sudersan M. Tuladhar, Raju Penmasta, David A. Walsh
  • Patent number: 8509226
    Abstract: A system and method for aggregating services within a VoIP network. The VoIP network comprises a plurality of vendors, resellers, and users, and each reseller aggregates a plurality of services from the vendors and other resellers. Each type of service may be organized into two or more tiers, with each tier including one or more services. Each tier is presented to downstream users as a single price and is re-branded with the reseller's branding elements. Downstream users can select a desired service from a given tier, and the tier may automatically select a service that maximizes the profit for the reseller.
    Type: Grant
    Filed: August 31, 2012
    Date of Patent: August 13, 2013
    Assignee: Orisha Holdings, L.L.C.
    Inventors: Chris Murphy, Eric Maginniss, David Walsh, Evin Hunt
  • Patent number: 8497393
    Abstract: This present invention relates to an improved process to prepare prostacyclin derivatives. One embodiment provides for an improved process to convert benzindene triol to treprostinil via salts of treprostinil and to purify treprostinil.
    Type: Grant
    Filed: July 13, 2012
    Date of Patent: July 30, 2013
    Assignee: United Therapeutics Corporation
    Inventors: Hitesh Batra, Sudersan M. Tuladhar, Raju Penmasta, David A. Walsh
  • Patent number: 8481782
    Abstract: The present invention is directed to a novel method for preparing a synthetic intermediate for treprostinil via a stereoselective alkyne addition reaction. Also described are methods of preparing treprostinil comprising the alkyne addition reaction described herein as well as novel intermediates useful for synthesis prostacyclin derivatives, such as treprostinil.
    Type: Grant
    Filed: June 2, 2011
    Date of Patent: July 9, 2013
    Assignee: United Therapeutics Corporation
    Inventors: Hitesh Batra, Raju Penmasta, Vijay Sharma, Sudersan M. Tuladhar, David A. Walsh
  • Publication number: 20130112577
    Abstract: A wearable aid for gripping an item by hand includes a main body shaped to be worn by a user, a strap connected to a first location of the main body and a releasable retaining means at a second location of the main body that is away from the first location. When a user wearing the aid has engaged an item to be gripped, part of the strap can be passed over at least part of one or more fingers of the user's hand and secured to the releasable retaining means in a manner that aids the user in gripping the item.
    Type: Application
    Filed: June 11, 2011
    Publication date: May 9, 2013
    Inventor: Stuart David Walsh
  • Publication number: 20130090690
    Abstract: A dynamic rod assembly, such as that used for spinal stabilization, made of a number of interlocking segments whereby a limited amount of relative motion is permitted between each pair of adjacent segments. The dynamic rod assembly may also incorporate a separate central element that extends at least partially through a central channel within the interlocking segments to prevent the interlocking segments from disengaging while adding to the desired bending properties of the dynamic rod assembly.
    Type: Application
    Filed: September 12, 2012
    Publication date: April 11, 2013
    Inventor: David A. Walsh
  • Patent number: 8350079
    Abstract: There is provided a stable monohydrate form of treprostinil and pharmaceutical formulation comprising the same, method of making and using the same.
    Type: Grant
    Filed: May 7, 2009
    Date of Patent: January 8, 2013
    Assignee: United Therapeutics Corporation
    Inventor: David A. Walsh
  • Publication number: 20120283470
    Abstract: This present invention relates to an improved process to prepare prostacyclin derivatives. One embodiment provides for an improved process to convert benzindene triol to treprostinil via salts of treprostinil and to purify treprostinil.
    Type: Application
    Filed: July 13, 2012
    Publication date: November 8, 2012
    Inventors: Hitesh Batra, Sudersan M. Tuladhar, Raju Penmasta, David A. Walsh
  • Patent number: 8242305
    Abstract: This present invention relates to an improved process to prepare prostacyclin derivatives. One embodiment provides for an improved process to convert benzindene triol to treprostinil via salts of treprostinil and to purify treprostinil.
    Type: Grant
    Filed: December 15, 2008
    Date of Patent: August 14, 2012
    Assignee: United Therapeutics Corporation
    Inventors: Hitesh Batra, Sudersan M. Tuladhar, Raju Penmasta, David A. Walsh