Patents by Inventor David A. Lewandowski

David A. Lewandowski 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: 11539801
    Abstract: Systems and methods for generating a video including a plurality of graphic objects provided in a shared environment is described. The method includes acquiring, at a first computing device, a shared session identifier from a shared session manager, the shared session identifier being associated with a first user identifier, receiving a selection of a second user identifier, causing the shared session identifier and the first user identifier to be provided to a second computing device associated with the second user identifier, receiving as input, a first graphic object for rendering to a display associated with the first computing device, the first graphic object being associated with the first user identifier, receiving from a data synchronizer, a second graphic object associated with the second user identifier and the shared session identifier for rendering to the display associated with the second computing device, and generating a video including graphic objects.
    Type: Grant
    Filed: August 4, 2021
    Date of Patent: December 27, 2022
    Assignee: Lemon Inc.
    Inventors: Dan Noskin, Mike Gubman, Yaxi Gao, Shengchuan Shi, Jie Liao, Yiling Chen, Chris Weigele, Esther An, Ryan Northway, Ray McClure, David Lewandowski, Keting Pan, Blake Fawley, Yi Chen, Yong Wang, Mehul Gore, Christine Lee, Vanessa Brown, Guangqian Tian
  • Publication number: 20110247130
    Abstract: A garment comprising: at least one pocket; and at least one protective pad located within said at least one pocket; and at least one connecting structure for securing at least one optional protective pad to the garment the at least one connecting structure being capable of cooperating with a complementary connecting structure operatively connected to the at least one optional protective pad.
    Type: Application
    Filed: April 8, 2011
    Publication date: October 13, 2011
    Inventor: David Lewandowski
  • Patent number: 5931663
    Abstract: A continuous system and method for purging waste gases from dual heat exchange beds associated with a regenerative thermal oxidizer are disclosed. The system includes a purge recovery tank, a stack open to the atmosphere, a stack bypass, a stack valve in the stack, and a stack bypass valve in the stack bypass. The purge recovery tank is in fluid communication with two heat exchange beds, the stack, and the stack bypass. The stack is in fluid communication with the stack bypass and the heat exchange beds. A purge recycle control valve is used to recycle untreated waste gases from the purge recovery tank to the heat exchange beds and into the regenerative thermal oxidizer. A second embodiment wherein the purge recovery tank is positioned between the two heat exchange beds is also disclosed.
    Type: Grant
    Filed: February 27, 1998
    Date of Patent: August 3, 1999
    Assignee: Process Combustion Corporation
    Inventors: David A. Lewandowski, Peter B. Nutcher, Peter J. Waldern
  • Patent number: 5707596
    Abstract: The present invention is directed to a method which significantly improves the efficiency of reducing nitrogen oxide formation and emission during incineration of a waste gas in an air-staged thermal oxidizer. In accordance with the present invention, a natural gas stream is mixed with combustion air in a burner and the mixture is ignited with the immediate introduction of liquid water. Thus, the resulting mixture is then injected into a first reducing zone which is fuel rich in order to begin the combustion process, but retard the formation of nitrogen oxides. The waste gas exiting the reducing zone is deficient in oxygen due to the fuel rich atmosphere in the first reducing zone and cooler due to the water cooling as it enters the second oxidizing zone. In the second oxidizing zone, additional oxygen in the form of air is injected to complete the combustion process.
    Type: Grant
    Filed: November 8, 1995
    Date of Patent: January 13, 1998
    Assignee: Process Combustion Corporation
    Inventors: David A. Lewandowski, Peter B. Nutcher, Peter J. Waldern
  • Patent number: 5674203
    Abstract: A safety needle device includes a barrel having an inside surface defining a chamber and an open proximal end. A distal end includes a needle cannula attached thereto. The needle cannula includes a distal tip and a lumen therethrough in fluid communication with the chamber. A needle guard is mounted on the barrel for movement relative to the barrel from a retracted position in which the needle guard does not materially obstruct access to the distal tip of the needle cannula and an extended position in which the needle guard obstructs access to the distal tip. The safety needle device includes structure for releasably retaining the needle guard in the retracted position and for locking the needle guard in the extended position.
    Type: Grant
    Filed: December 6, 1995
    Date of Patent: October 7, 1997
    Assignee: Becton, Dickinson and Company
    Inventor: Raymond David Lewandowski
  • Patent number: 5368100
    Abstract: A coiled tubing conveyed sampling apparatus includes an actuator housing having a housing interior and having a proximal housing end including a connector for connecting the housing to a coiled tubing string so that a tubing bore of the coiled tubing string is communicated with the housing interior. A one-way check valve is disposed in the housing interior and allows well fluid from the well bore to fill the tubing bore of the coiled tubing string as the sampling apparatus is run into the well. The check valve isolates the tubing bore of the coiled tubing string from the well when pressure in the tubing bore exceeds pressure in the well. A sampling tool is attached to a lower end of the actuator housing.
    Type: Grant
    Filed: March 10, 1993
    Date of Patent: November 29, 1994
    Assignee: Halliburton Company
    Inventors: David Lewandowski, Roger L. Schultz
  • Patent number: D703875
    Type: Grant
    Filed: April 15, 2013
    Date of Patent: April 29, 2014
    Assignee: Evoshield, LLC
    Inventors: David Lewandowski, Charles D. Richardson, Justin E. Niefer