Patents by Inventor Matthew J. Stewart

Matthew J. Stewart 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: 20230351109
    Abstract: Various embodiments of the present invention provide methods, apparatus, systems, computing devices, computing entities, and/or the like for performing natural language processing operations using a hybrid reason code prediction machine learning framework. Certain embodiments of the present invention utilize systems, methods, and computer program products that perform natural language processing using a hybrid reason code prediction machine learning framework that comprises one or more of the following: (i) a hierarchical transformer machine learning model, (ii) an utterance prediction machine learning model, (iii) an attention distribution generation machine learning model, (iv) an utterance-code pair prediction machine learning model, and (v) a hybrid prediction machine learning model.
    Type: Application
    Filed: April 28, 2022
    Publication date: November 2, 2023
    Inventors: Suman Roy, Thomas G. Sullivan, Vijay Varma Malladi, Matthew J. Stewart, Abraham G. Tesfay, Gaurav Ranjan
  • Patent number: 6468051
    Abstract: A helical flow compressor used to supply gaseous fuel to a turbogenerator is equipped with an inlet throttling valve. The inlet throttling valve maintains the outlet pressure of the compressor at a preselected value.
    Type: Grant
    Filed: March 7, 2001
    Date of Patent: October 22, 2002
    Inventors: Steven W. Lampe, Matthew J. Stewart, Dennis H. Weissert
  • Publication number: 20010018026
    Abstract: A helical flow compressor/turbine permanent magnet motor/generator in which a pair of journal bearings are disposed on either side of the multiple impellers of the helical flow compressor/turbine of the helical flow compressor/turbine permanent magnet motor/generator.
    Type: Application
    Filed: March 7, 2001
    Publication date: August 30, 2001
    Applicant: Capstone Turbine Corporation
    Inventors: Steven W. Lampe, Matthew J. Stewart, Dennis H. Weissert
  • Patent number: 6158892
    Abstract: A compliant foil fluid film bearing having individual fluid film foils formed as arcuate segments by an inner circumferential slot, an outer circumferential slot and a transverse therebetween. The transverse slot may be radial, slightly displaced from radial or tapered with one radial edge.
    Type: Grant
    Filed: August 25, 1999
    Date of Patent: December 12, 2000
    Assignee: Capstone Turbine Corporation
    Inventors: Matthew J. Stewart, Dennis H. Weissert, Theodore S. Brockett
  • Patent number: 6094799
    Abstract: A compound shalt coupling having a flexible disk shaft, with two flexible disks or diaphragms, and a tie bolt shaft connecting two rigid or stiff shafts. One flexible disk diaphragm of the flexible disk shaft is coupled with an interference fit to the first stiff shaft, while the other flexible disk diaphragm of the flexible disk shaft is coupled with an interference fit to the tie bolt shaft which removably mounts the second stiff shaft. A quill shaft connects the two flexible disk diaphragms of the flexible disk shaft. The first stiff shaft can be a hollow sleeve with a magnet mounted therein and the second stiff shaft or power head shaft may include a compressor wheel, a bearing rotor, and a turbine wheel removably mounted on the tie bolt shaft.
    Type: Grant
    Filed: December 30, 1998
    Date of Patent: August 1, 2000
    Assignee: Capstone Turbine Corporation
    Inventors: Matthew J. Stewart, Kenneth G. Roberts, Dennis H. Weissert, Robert W. Bosley
  • Patent number: 6037687
    Abstract: A compound shaft coupling having a flexible disk shaft, with two flexible disks or diaphragms, and a tie bolt shaft connecting two rigid or stiff shafts. One flexible disk diaphragm of the flexible disk shaft is coupled with an interference fit to the first stiff shaft, while the other flexible disk diaphragm of the flexible disk shaft is coupled with an interference fit to the tie bolt shaft which removably mounts the second stiff shaft. A quill shaft connects the two flexible disk diaphragms of the flexible disk shaft. The first stiff shaft can be a hollow sleeve with a magnet mounted therein and the second stiff shaft or power head shaft may include a compressor wheel, a bearing rotor, and a turbine wheel removably mounted on the tie bolt shaft.
    Type: Grant
    Filed: December 30, 1998
    Date of Patent: March 14, 2000
    Assignee: Capstone Turbine Corporation
    Inventors: Matthew J. Stewart, Kenneth G. Roberts, Dennis H. Weissert, Robert W. Bosley
  • Patent number: 5964663
    Abstract: A compound shaft coupling having a flexible disk shaft, with two flexible disks or diaphragms, and a tie bolt shaft connecting two rigid or stiff shafts. One flexible disk diaphragm of the flexible disk shaft is coupled with an interference fit to the first stiff shaft, while the other flexible disk diaphragm of the flexible disk shaft is coupled with an interference fit to the tie bolt shaft which removably mounts the second stiff shaft. A quill shaft connects the two flexible disk diaphragms of the flexible disk shaft. The first stiff shaft can be a hollow sleeve with a magnet mounted therein and the second stiff shaft or power head shaft may include a compressor wheel, a bearing rotor, and a turbine wheel removably mounted on the tie bolt shaft.
    Type: Grant
    Filed: September 19, 1997
    Date of Patent: October 12, 1999
    Assignee: Capstone Turbine Corp.
    Inventors: Matthew J. Stewart, Kenneth G. Roberts, Dennis H. Weissert, Robert W. Bosley