Patents by Inventor Jeffrey Alan Knopf

Jeffrey Alan Knopf 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).

  • Apparatus and method for machining polymers with controlled croygenic cooling
    Patent number: 8820199
    Abstract: A method and apparatus for discharging a temperature-controlled flow of a resultant fluid (32) containing a throttling gas and cryogenic fluid onto a material (14) for the purpose of maintaining the temperature of the material within a desired temperature range and below the glass transition temperature of the material during machining. Also disclosed is an apparatus and method for deburring or deflashing a machined material by discharging a temperature-controlled flow of a resultant fluid (132) onto a machined material (114) to harden the burrs (134a), then brushing the material (114) to remove the hardened burrs (143a).
    Type: Grant
    Filed: September 20, 2008
    Date of Patent: September 2, 2014
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Ranajit Ghosh, Jeffrey Alan Knopf, Daniel James Gibson, Thomas Mebrahtu, Kevin John Giardiniere
  • APPARATUS AND METHOD FOR MACHINING POLYMERS WITH CONTROLLED CROYGENIC COOLING
    Publication number: 20100193980
    Abstract: A method and apparatus for discharging a temperature-controlled flow of a resultant fluid (32) containing a throttling gas and cryogenic fluid onto a material (14) for the purpose of maintaining the temperature of the material within a desired temperature range and below the glass transition temperature of the material during machining. Also disclosed is an apparatus and method for deburring or deflashing a machined material by discharging a temperature-controlled flow of a resultant fluid (132) onto a machined material (114) to harden the burrs (134a), then brushing the material (114) to remove the hardened burrs (143a).
    Type: Application
    Filed: September 20, 2008
    Publication date: August 5, 2010
    Applicant: AIR PRODUCTS AND CHEMICALS, INC.
    Inventors: Ranajit Ghosh, Jeffrey Alan Knopf, Daniel James Gibson, Thomas Mebrahtu, Kevin John Giardiniere
  • Oxygen production by ion transport membranes with non-permeate work recovery
    Patent number: 5753007
    Abstract: Oxygen is recovered from a hot, compressed oxygen-containing gas, preferably air, by an oxygen-selective ion transport membrane system. Hot, pressurized non-permeate gas from the membrane is cooled and useful work is recovered therefrom by expansion at temperatures below the operating temperature of the membrane. The recovered work is used together with the oxygen permeate product in applications such as oxygen-enriched combustion of liquid fuels, wood pulping processes, steel production from scrap in mini-mills, and metal fabrication operations. Oxygen permeate product can be compressed utilizing a gas booster compressor driven by expansion of cooled, pressurized non-permeate gas.
    Type: Grant
    Filed: February 13, 1997
    Date of Patent: May 19, 1998
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Steven Lee Russek, Jeffrey Alan Knopf, Dale M. Taylor
  • Process for the treatment of pulp with oxygen and steam using ejectors
    Patent number: 5690786
    Abstract: A process for using ejectors to combine high pressure steam and low pressure oxygen to produce a steam and oxygen enriched gas single phase gas mixture for introduction into various pulp treatments using oxygen with the benefit of low cost compression, low capital requirements and superior oxygen mixing.
    Type: Grant
    Filed: November 26, 1991
    Date of Patent: November 25, 1997
    Assignee: Air Products and Chemicals Inc.
    Inventors: John Frederick Cirucci, Jeffrey Alan Knopf, Vincent Louis Magnotta, William Paul Schmidt