Patents by Inventor Matthew L. Iwen

Matthew L. Iwen 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: 9855413
    Abstract: A header for use in implantable pulse generator devices. The header is part of electrical connector assembly having one or more openings designed to receive the terminal pin of an electrical lead wire or electrode. The header is designed to provide and sustain long-term electrical and mechanical lead wire connections between the electrodes of a terminal pin and the implantable pulse generator device.
    Type: Grant
    Filed: January 30, 2015
    Date of Patent: January 2, 2018
    Assignee: DONATELLE PLASTICS, INC.
    Inventors: Raghu Vadlamudi, Matthew L. Iwen, Matthew R. Call, Christopher M. Zerby, Clint J. Fonder
  • Patent number: 9278224
    Abstract: A multi-foil ringlet in combination with a cylindrical housing provides advantageous results when employed as a contact of a header of an implantable pulse generator. The multi-foil ringlet provides a superior electrical connection between the header and a lead pin inserted into the header.
    Type: Grant
    Filed: November 3, 2014
    Date of Patent: March 8, 2016
    Assignee: Donatelle Plastics, Inc.
    Inventors: Raghu Vadlamudi, Matthew L. Iwen, Clint J. Fonder
  • Patent number: 9276348
    Abstract: A connector for electrically and mechanically coupling a lead pin to a pulse generator that includes a housing and a plunger having openings which can be aligned in an unlocked position to permit insertion and retraction of the lead pin. The connector also has a biasing member which moves and then holds the plunger in a locked position relative to the housing such that the housing and plunger pinch the lead pin thereby coupling the lead pin to the connector.
    Type: Grant
    Filed: January 16, 2015
    Date of Patent: March 1, 2016
    Assignee: Donatelle Plastics, Inc.
    Inventors: Raghu Vadlamudi, Matthew L. Iwen, Christopher M. Zerby, Clint J. Fonder
  • Patent number: 9089686
    Abstract: A header for use in implantable pulse generator devices. The header is part of electrical connector assembly having one or more openings designed to receive the terminal pin of an electrical lead wire or electrode. The header is designed to provide and sustain long-term electrical and mechanical lead wire connections between the electrodes of a terminal pin and the implantable pulse generator device.
    Type: Grant
    Filed: October 22, 2013
    Date of Patent: July 28, 2015
    Assignee: Donatelle Plastics, Inc.
    Inventors: Matthew L. Iwen, Matthew R. Call
  • Publication number: 20150142092
    Abstract: A header for use in implantable pulse generator devices. The header is part of electrical connector assembly having one or more openings designed to receive the terminal pin of an electrical lead wire or electrode. The header is designed to provide and sustain long-term electrical and mechanical lead wire connections between the electrodes of a terminal pin and the implantable pulse generator device.
    Type: Application
    Filed: January 30, 2015
    Publication date: May 21, 2015
    Inventors: Raghu Vadlamudi, Matthew L. Iwen, Matthew R. Call, Christopher M. Zerby, Clint J. Fonder
  • Publication number: 20140067034
    Abstract: A header for use in implantable pulse generator devices. The header is part of electrical connector assembly having one or more openings designed to receive the terminal pin of an electrical lead wire or electrode. The header is designed to provide and sustain long-term electrical and mechanical lead wire connections between the electrodes of a terminal pin and the implantable pulse generator device.
    Type: Application
    Filed: October 22, 2013
    Publication date: March 6, 2014
    Applicant: Donatelle Plastics, Inc.
    Inventors: Matthew L. Iwen, Matthew R. Call
  • Patent number: 8666494
    Abstract: A header for use in implantable pulse generator devices. The header is part of electrical connector assembly having one or more openings designed to receive the terminal pin of an electrical lead wire or electrode. The header is designed to provide and sustain long-term electrical and mechanical lead wire connections between the electrodes of a terminal pin and the implantable pulse generator device.
    Type: Grant
    Filed: April 25, 2011
    Date of Patent: March 4, 2014
    Assignee: Donatelle Plastics, Inc.
    Inventors: Dana E. Schramm, Matthew L. Iwen, Nick J. Miller, Matthew R. Call
  • Publication number: 20110270363
    Abstract: A header for use in implantable pulse generator devices. The header is cart, of electrical connector assembly having one or more openings designed to receive the terminal pin of an electrical lead wire or electrode. The header is designed to provide and sustain long-term electrical and mechanical lead wire connections between the electrodes of a terminal pin and the implantable pulse generator device.
    Type: Application
    Filed: April 25, 2011
    Publication date: November 3, 2011
    Applicant: DONATELLE PLASTICS, INC.
    Inventors: Dana E. Schramm, Matthew L. Iwen, Nick J. Miller, Matthew R. Call
  • Patent number: 6833038
    Abstract: A barrier sheet having a first side and a second side, a top edge, a bottom edge, and a laterally located midpoint, wherein the sheet is folded along its length to form a folded sheet defined by at least one fold with an adhesive strip positioned at a predetermined distance from the top and bottom edges, and preferably approximately at the sheet midpoint. When making a roll of barrier material, a barrier sheet material is provided and folded at least once laterally. The sheet then incorporates an adhesive strip applied to one side of the sheet at a predetermined distance from the top and bottom ends, preferably approximately at the midpoint. The adhesive strip is oriented lengthwise such that when the sheet is unrolled from the roll and unfolded, the strip will approximately bisect the sheet lengthwise. The sheet is then folded in a predetermined fashion, and rolled onto a roll.
    Type: Grant
    Filed: December 17, 2001
    Date of Patent: December 21, 2004
    Assignee: Tyco International (US), Inc.
    Inventors: Matthew L. Iwen, Robert A. Christopherson, Don Kiser, Thomas J. Lundborg
  • Publication number: 20020045020
    Abstract: A barrier sheet having a first side and a second side, a top edge, a bottom edge, and a laterally located midpoint, wherein the sheet is folded along its length to form a folded sheet defined by at least one fold with an adhesive strip positioned at a predetermined distance from the top and bottom edges, and preferably approximately at the sheet midpoint. When making a roll of barrier material, a barrier sheet material is provided and folded at least once laterally. The sheet then incorporates an adhesive strip applied to one side of the sheet at a predetermined distance from the top and bottom ends, preferably approximately at the midpoint. The adhesive strip is oriented lengthwise such that when the sheet is unrolled from the roll and unfolded, the strip will approximately bisect the sheet lengthwise. The sheet is then folded in a predetermined fashion, and rolled onto a roll.
    Type: Application
    Filed: December 17, 2001
    Publication date: April 18, 2002
    Applicant: Rexam Flexible Packaging
    Inventors: Matthew L. Iwen, Robert A. Christopherson, Don Kiser, Thomas J. Lundborg
  • Patent number: 6355323
    Abstract: A barrier sheet having a first side and a second side, a top edge, a bottom edge, and a laterally located midpoint, wherein the sheet is folded along its length to form a folded sheet defined by at least one fold with an adhesive strip positioned at a predetermined distance from the top and bottom edges, and preferably approximately at the sheet midpoint. When making a roll of barrier material, a barrier sheet material is provided and folded at least once laterally. The sheet then incorporates an adhesive strip applied to one side of the sheet at a predetermined distance from the top and bottom ends, preferably approximately at the midpoint. The adhesive strip is oriented lengthwise such that when the sheet is unrolled from the roll and unfolded, the strip will approximately bisect the sheet lengthwise. The sheet is then folded in a predetermined fashion, and rolled onto a roll.
    Type: Grant
    Filed: January 27, 2000
    Date of Patent: March 12, 2002
    Inventors: Matthew L. Iwen, Robert A. Christopherson, Don Kiser, Thomas J. Lundborg
  • Patent number: 6183814
    Abstract: A coated paper product including a paper layer and a polymer layer, wherein the polymer layer includes a polylactide polymer composition having a ratio of Mz to Mn of greater than about 6. The polymer composition, when melted, exhibits a die swell of greater than about 1.25 for a melt flow index of greater than about 2. Polymer lactide compositions, methods of manufacturing the polymer composition and the coated paper product, and articles produced therefrom are also described.
    Type: Grant
    Filed: May 23, 1997
    Date of Patent: February 6, 2001
    Assignee: Cargill, Incorporated
    Inventors: James Nangeroni, Mark H. Hartmann, Matthew L. Iwen, Christopher Michael Ryan, Jeffrey J. Kolstad, Kevin T. McCarthy
  • Patent number: 5357035
    Abstract: A process for the continuous production of polylactide polymers from lactic acid which incorporates removal of water or a solvent carrier to concentrate the lactic acid feed followed by polymerization to a low-molecular-weight prepolymer. This prepolymer is fed to a reactor in which a catalyst is added to facilitate generation of lactide, the depolymerization product of polylactic acid. The lactide generated is continuously fed to a distillation system as a liquid or vapor wherein water and other impurities are removed. The resultant purified liquid lactide is fed directly to a polymerization process.
    Type: Grant
    Filed: September 16, 1993
    Date of Patent: October 18, 1994
    Assignee: Cargill, Incorporated
    Inventors: Patrick R. Gruber, Eric S. Hall, Jeffrey J. Kolstad, Matthew L. Iwen, Richard D. Benson, Ronald L. Borchardt
  • Patent number: 5274073
    Abstract: A process for the continuous conversion of crude lactic acid to a substantially purified lactide or polylactide including the steps of polymerizing the lactic acid to form a prepolymer with subsequent depolymerization to form a crude lactide in the presence of a catalyst. The crude lactide is purified in an improved distillation system in which at least three fractions are formed with the substantially purified lactide removed as an intermediate boiling sidedraw stream. The substantially purified lactide may then be polymerized.
    Type: Grant
    Filed: August 24, 1992
    Date of Patent: December 28, 1993
    Assignee: Cargill, Incorporated
    Inventors: Patrick R. Gruber, Eric S. Hall, Jeffrey J. Kolstad, Matthew L. Iwen, Richard D. Benson, Ronald L. Borchardt
  • Patent number: 5258488
    Abstract: A process for the continuous production of polylactide polymers from lactic acid which incorporates removal of water or a solvent carrier to concentrate the lactic acid feed followed by polymerization to a low-molecular-weight prepolymer. This prepolymer is fed to a reactor in which a catalyst is added to facilitate generation of lactide, the depolymerization product of polylactic acid. The lactide generated is continuously fed to a distillation system as a liquid or vapor wherein water and other impurities are removed. The resultant purified liquid lactide is fed directly to a polymerization process.
    Type: Grant
    Filed: August 7, 1992
    Date of Patent: November 2, 1993
    Assignee: Cargill, Incorporated
    Inventors: Patrick R. Gruber, Eric S. Hall, Jeffrey J. Kolstad, Matthew L. Iwen, Richard D. Benson, Ronald L. Borchardt
  • Patent number: 5247059
    Abstract: A process for the continuous production of substantially purified lactide and lactide polymers from an ester of lactic acid including the steps of forming crude lactide in the presence of a catalyst means to form a condensation reaction by-product and polylactic acid and depolymerizing the polylactic acid molecules followed by subsequent purification of the crude lactide in a distillation system. A purified lactide is then polymerized.
    Type: Grant
    Filed: August 24, 1992
    Date of Patent: September 21, 1993
    Assignee: Cargill, Incorporated
    Inventors: Patrick R. Gruber, Eric S. Hall, Jeffrey J. Kolstad, Matthew L. Iwen, Richard D. Benson, Ronald L. Borchardt
  • Patent number: 5142023
    Abstract: A process for the continuous production of polylactide polymers from lactic acid which incorporates removal of water or a solvent carrier to concentrate the lactic acid feed followed by polymerization to a low-molecular-weight prepolymer. This prepolymer is fed to a reactor in which a catalyst is added to facilitate generation of lactide, the depolymerization product of polylactic acid. The lactide generated is continuously fed to a distillation system as a liquid or vapor wherein water and other impurities are removed. The resultant purified liquid lactide is fed directly to a polymerization process.
    Type: Grant
    Filed: January 24, 1992
    Date of Patent: August 25, 1992
    Assignee: Cargill, Incorporated
    Inventors: Patrick R. Gruber, Eric S. Hall, Jeffrey J. Kolstad, Matthew L. Iwen, Richard D. Benson, Ronald L. Borchardt