Patents by Inventor Robert G. Lutz

Robert G. Lutz 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: 11918725
    Abstract: A dual lumen coaxial cannula, assembly includes a first infusion tube having a first elongate body defining a first lumen therethrough and a second drainage tube co-axially aligned with the first infusion tube and having a second elongate body with a second lumen defined by a space between the first infusion tube and second drainage tube. A connector is removably attached to the first infusion tube and the second drainage tube for coupling the dual lumen coaxial cannula to an extracorporeal blood circuit. The first infusion tube and the second drainage tube include a plurality of infusion and drainage apertures, respectively, provided at the distal end and extending through the sidewall of the first infusion tube and the drainage tube, respectively.
    Type: Grant
    Filed: November 3, 2021
    Date of Patent: March 5, 2024
    Assignee: CardiacAssist, Inc.
    Inventors: Patrick A. Kelly, Patrick E. Lutz, Robert G. Svitek, Jerry Stokes
  • Patent number: 7913652
    Abstract: An elevating animal bathing tub having an elevating platform and a tub formed of light weight strong material secured to the platform. The tub is provided with a downward directed skirt and the elevating platform is provided with an upward directed skirt that telescopes with the skirt on the tub to shield the elevating apparatus. The tub is provided with an entry cutout so that when the tub is in the lowered position an animal to be bathed can easily enter the tub. The tub is configured to accept utilities and attachments specific to the tasks to which the tub is to serve.
    Type: Grant
    Filed: September 21, 2009
    Date of Patent: March 29, 2011
    Inventor: Robert G. Lutz
  • Patent number: 5506299
    Abstract: A super-toughened multiphase thermoplastic composition is provided by combining at least one modified selectively hydrogenated conjugated diene/alkenyl arene block copolymer to which has been grafted an effective amount of succinic groups primarily in the selectively hydrogenated conjugated diene blocks thereof and optionally at least one unmodified selectively hydrogenated conjugated diene/alkenyl arene block copolymer with at least one .alpha.,.omega.-polyamide.
    Type: Grant
    Filed: June 20, 1994
    Date of Patent: April 9, 1996
    Assignee: Shell Oil Company
    Inventors: Richard Gelles, William P. Gergen, Robert G. Lutz, Michael J. Modic
  • Patent number: 5371141
    Abstract: A super-toughened multiphase thermoplastic composition is provided by combining at least one modified selectively hydrogenated conjugated diene/alkenyl arene block copolymer to which has been grafted an effective amount of succinic groups primarily in the selectively hydrogenated conjugated diene blocks thereof and optionally at least one unmodified selectively hydrogenated conjugated diene/alkenyl arene block copolymer with at least one .alpha.,.omega.-polyamide.
    Type: Grant
    Filed: April 2, 1992
    Date of Patent: December 6, 1994
    Assignee: Shell Oil Company
    Inventors: Richard Gelles, William P. Gergen, Robert G. Lutz, Michael J. Modic
  • Patent number: 5281663
    Abstract: The present invention relates to a high impact resistant polymeric composition comprising a polyester and a thermally stable modified selectively hydrogenated block copolymer wherein at least one acid compound or a derivative thereof is grafted to the block copolymer. Poly(alkylene terephthalates) are preferred thermoplastic polyesters. The block copolymer will comprise at least one polymeric block of a monoalkenyl arene and at least one polymeric block of at least one conjugated diolefin.
    Type: Grant
    Filed: March 31, 1992
    Date of Patent: January 25, 1994
    Assignee: Shell Oil Company
    Inventors: Richard Gelles, William P. Gergen, Robert G. Lutz, Michael J. Modic
  • Patent number: 5071916
    Abstract: Blends of (a) a linear alternating polymer of carbon monoxide and at least one ethylenically unsaturated hydrocarbon with (b) a partial non-alkali metal salt of a polymer of an .alpha.-olefin, an unsaturated carboxylic acid, and optionally a third monomer, exhibit improved properties of processability and toughness.
    Type: Grant
    Filed: April 17, 1989
    Date of Patent: December 10, 1991
    Assignee: Shell Oil Company
    Inventors: William P. Gergen, Robert G. Lutz
  • Patent number: 5006601
    Abstract: The present invention relates to an impact resistant polymeric composition, useful as a structural material, comprising a polyamide such as a nylon 6,6, a polyolefin such as polypropylene, and a functionalized elastomer such as a maleated-EPDM.
    Type: Grant
    Filed: July 20, 1990
    Date of Patent: April 9, 1991
    Assignee: Shell Oil Company
    Inventors: Robert G. Lutz, Richard Gelles, William P. Gergen
  • Patent number: 4956412
    Abstract: Polymer blends of improved properties are produced by uniformly mixing a linear alternating polymer of carbon monoxide and at least one ethylenically unsaturated hydrocarbon, and a copolymer of a vinyl aromatic monomer and an alkenyl nitrile.
    Type: Grant
    Filed: November 9, 1988
    Date of Patent: September 11, 1990
    Assignee: Shell Oil Company
    Inventors: William P. Gergen, Robert G. Lutz, William W.C. Hart
  • Patent number: 4954568
    Abstract: A toughened multiphase thermoplastic composition is provided by incorporating at least one functionalized, selectively hydrogenated alkenyl arene/conjugated diene block copolymer to which has been grafted an effective amount of carboxyl functional groups primarily in the alkenyl arene blocks thereof with a thermoplastic polyester. The carboxyl functional groups may be in the form of carboxylic acids, their salts, their esters, and combinations of two or more of these.
    Type: Grant
    Filed: February 15, 1989
    Date of Patent: September 4, 1990
    Assignee: Shell Oil Company
    Inventors: Richard Gelles, Carl L. Willis, Robert G. Lutz, William P. Gergen
  • Patent number: 4954555
    Abstract: Linear alternating polymrs of carbon monoxide and at least one ethylenically unsaturated hydrocarbon are provided increased melt stability by the inclusion therein of aluminum stearate.
    Type: Grant
    Filed: May 30, 1989
    Date of Patent: September 4, 1990
    Assignee: Shell Oil Company
    Inventors: Edgar J. Smutny, Robert G. Lutz
  • Patent number: 4904716
    Abstract: Blends of a linear alternating polymer of carbon monoxide and at least one ethylenically unsaturated hydrocarbon and a poly(arylsulfone) oligomer show improved processability as compared with the unblended polymer.
    Type: Grant
    Filed: May 31, 1989
    Date of Patent: February 27, 1990
    Assignee: Shell Oil Company
    Inventors: William P. Gergen, Robert G. Lutz
  • Patent number: 4904744
    Abstract: Blends of a major proportion of a linear alternating polymer of carbon monoxide and at least one ethylenically unsaturated hydrocarbon and lesser proportions of a relatively high molecular weight poly(arylsulfone) polymer and a relatively low molecular weight poly(arylsulfone) oligomer demonstrate improved processability and improved tensile modulus and tensile strength.
    Type: Grant
    Filed: May 31, 1989
    Date of Patent: February 27, 1990
    Assignee: Shell Oil Company
    Inventors: William P. Gergen, Robert G. Lutz
  • Patent number: H790
    Abstract: The present invention relates to a thermally stable modified selectively hydrogenated alkenyl arene/conjugated diene copolymer wherein a primary or secondary amine functional group is grafted to the block copolymer primarily in the alkenyl arene blocks thereof.
    Type: Grant
    Filed: February 17, 1988
    Date of Patent: June 5, 1990
    Inventors: William P. Gergen, Robert G. Lutz, Carl L. Willis
  • Patent number: D598078
    Type: Grant
    Filed: January 6, 2009
    Date of Patent: August 11, 2009
    Inventor: Robert G. Lutz
  • Patent number: D598079
    Type: Grant
    Filed: January 6, 2009
    Date of Patent: August 11, 2009
    Inventor: Robert G. Lutz
  • Patent number: H870
    Abstract: A process for solvent welding pure polybutene-1, or blends or copolymer of polytbutene-1 to polybutene-1 where the polybutene-1 items are contacted with a solvent such as methylene chloride, tetrahydrofuran or cyclohexane and then contacted together within a variable period of time after solidification of the polybutene-1 items.
    Type: Grant
    Filed: April 17, 1987
    Date of Patent: January 1, 1991
    Assignee: Shell Oil Company
    Inventor: Robert G. Lutz
  • Patent number: H917
    Abstract: Blends of (a) a linear alternating polymer of carbon monoxide and at least one ethylenically unsaturated hydrocarbon and (b) a maleated polyolefin polymer exhibit improved properties of thermal stability, impact resistance as better processability.
    Type: Grant
    Filed: July 28, 1989
    Date of Patent: May 7, 1991
    Assignee: Shell Oil Company
    Inventors: William P. Gergen, Robert G. Lutz, Richard L. Danforth
  • Patent number: H1438
    Abstract: The present invention relates to a thermally stable modified selectively hydrogenated high 1,2 content block copolymer wherein a functional group is grafted to the block copolymer in the vinylarene block.
    Type: Grant
    Filed: December 18, 1992
    Date of Patent: May 2, 1995
    Assignee: Shell Oil Company
    Inventors: William P. Gergen, Robert G. Lutz
  • Patent number: D697181
    Type: Grant
    Filed: February 28, 2013
    Date of Patent: January 7, 2014
    Inventor: Robert G. Lutz
  • Patent number: D697182
    Type: Grant
    Filed: February 28, 2013
    Date of Patent: January 7, 2014
    Inventor: Robert G. Lutz