Patents by Inventor DAVID P. POTEMPA

DAVID P. POTEMPA 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).

  • Method for applying a slurry coating onto a surface of an inner diameter of a conduit
    Patent number: 10520265
    Abstract: A method for creating a coating onto an inner diameter of conduit, whereby an injection nozzle is moved in a forward direction until its tip is aligned with the end of the conduit. Slurry is pumped from a reservoir into the injection nozzle and then is discharged through the tip of the injection nozzle. The slurry flows, distributes and spreads onto the surface of the conduit. The conduit is rotated and the nozzle is retracted as slurry continues to discharge from the nozzle to coat the remainder of the conduit.
    Type: Grant
    Filed: October 15, 2015
    Date of Patent: December 31, 2019
    Assignee: PRAXAIR TECHNOLOGY, INC.
    Inventors: Sang Muk Kwark, Zigui Lu, David P. Potempa, Maulik R. Shelat
  • Air separation unit heat exchanger with porous boiling surface coatings
    Patent number: 10221970
    Abstract: A porous metallic coating is provided. The coating is characterized by a combination of optimized properties that improve coating performance, as measured by heat transfer efficiency. The porous coating has optimal ranges for properties such as porosity, particle size and thickness, and has particular applicability in boiling heat transfer applications as part of an air separations unit. The porous coatings are derived from slurry-based formulations that include a mixture of metallic particles, a binder and a solvent.
    Type: Grant
    Filed: June 21, 2018
    Date of Patent: March 5, 2019
    Assignee: PRAXAIR TECHNOLOGY, INC.
    Inventors: Zigui Lu, Sang Muk Kwark, Joseph M. Corpus, Jonathan A. Lane, David P. Potempa, Maulik R. Shelat
  • AIR SEPARATION UNIT HEAT EXCHANGER WITH POROUS BOILING SURFACE COATINGS
    Publication number: 20180299035
    Abstract: A porous metallic coating is provided. The coating is characterized by a combination of optimized properties that improve coating performance, as measured by heat transfer efficiency. The porous coating has optimal ranges for properties such as porosity, particle size and thickness, and has particular applicability in boiling heat transfer applications as part of an air separations unit. The porous coatings are derived from slurry-based formulations that include a mixture of metallic particles, a binder and a solvent.
    Type: Application
    Filed: June 21, 2018
    Publication date: October 18, 2018
    Inventors: Zigui Lu, Sang Muk Kwark, Joseph M. Corpus, Jonathan A. Lane, David P. Potempa, Maulik R. Shelat
  • Porous coatings
    Patent number: 10047880
    Abstract: A porous metallic coating is provided. The coating is characterized by a combination of optimized properties that improve coating performance, as measured by heat transfer efficiency. The porous coating has optimal ranges for properties such as porosity, particle size and thickness, and has particular applicability in boiling heat transfer applications as part of an air separations unit. The porous coatings are derived from slurry-based formulations that include a mixture of metallic particles, a binder and a solvent.
    Type: Grant
    Filed: October 15, 2015
    Date of Patent: August 14, 2018
    Assignee: PRAXAIR TECHNOLOGY, INC.
    Inventors: Zigui Lu, Sang Muk Kwark, Joseph M. Corpus, Jonathan A. Lane, David P. Potempa, Maulik R. Shelat
  • NOVEL METHOD FOR PRODUCING COATING COMPOSITIONS WITH IMPROVED COATING PROPERTIES AND CONSISTENCY THEREOF
    Publication number: 20170108296
    Abstract: A method for creating a coating onto a conduit is provided. The method includes rotating the conduit while injecting a controlled amount of slurry onto the surface of an inner diameter of the conduit through a nozzle that is retracted from out of the conduit at a controlled speed. The method offers improved reproducibility and repeatability of coating properties in comparison to conventional coating methods.
    Type: Application
    Filed: October 15, 2015
    Publication date: April 20, 2017
    Inventors: SANG MUK KWARK, ZIGUI LU, DAVID P. POTEMPA, MAULIK R. SHELAT
  • POROUS COATINGS
    Publication number: 20170108148
    Abstract: A porous metallic coating is provided. The coating is characterized by a combination of optimized properties that improve coating performance, as measured by heat transfer efficiency. The porous coating has optimal ranges for properties such as porosity, particle size and thickness, and has particular applicability in boiling heat transfer applications as part of an air separations unit. The porous coatings are derived from slurry-based formulations that include a mixture of metallic particles, a binder and a solvent.
    Type: Application
    Filed: October 15, 2015
    Publication date: April 20, 2017
    Inventors: ZIGUI LU, SANG MUK KWARK, JOSEPH M. CORPUS, JONATHAN A. LANE, DAVID P. POTEMPA, MAULIK R. SHELAT