Patents by Inventor David S. Fischer

David S. Fischer 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: 10738605
    Abstract: A method for testing properties of a pressurized multiphase fluid sample containing at least hydrocarbons and water. The pressurized multiphase fluid sample is placed into a first pressurized chamber of a testing device. The water is separated from the hydrocarbons. At least part of the separated water is flowed through a first outlet in the first pressurized chamber and into a second pressurized chamber. The second pressurized chamber is optionally isolated from the first pressurized chamber. A pH level of the separated water is tested in the second pressurized chamber. Microbial activity and growth is tested for in the pressurized multiphase fluid in the first pressurized chamber. A pressure of the pressurized multiphase fluid is substantially maintained throughout the placing, separating, flowing, isolating, and testing steps.
    Type: Grant
    Filed: March 8, 2018
    Date of Patent: August 11, 2020
    Assignee: ExxonMobil Upstream Research Company
    Inventors: Joseph W. Stolle, Yao Xiong, Dennis R. Enning, David S. Fischer, Manuel A. Castelan
  • Publication number: 20200150025
    Abstract: Carbon steels are desirable for many applications due to their hardness and low cost. Susceptibility toward corrosion can complicate the use of carbon steels, and there is presently no ready way to predict susceptibility toward corrosion for a given carbon steel under a particular set of corrosive conditions. Methods for predicting susceptibility toward corrosion and determining the suitability of a carbon steel may comprise: obtaining a group of carbon steel samples, each carbon steel sample having an unknown rate of corrosion and a microstructure; measuring a quantity of carbides within the microstructure of each carbon steel sample having an unknown rate of corrosion; and determining a relative order of susceptibility toward corrosion within the group of carbon steel samples based upon the quantity of carbides within the microstructure of each carbon steel sample.
    Type: Application
    Filed: October 23, 2019
    Publication date: May 14, 2020
    Inventors: Fang Cao, Yao Xiong, David S. Fischer, Jorge L. Pacheco
  • Publication number: 20200063028
    Abstract: Capsules, systems and methods for delivering chemical components to multiphase environments are disclosed. The systems and methods utilize delivery capsules within which the chemical components are encapsulated. The chemical components may be corrosion inhibitors or biocides and the multiphase environment an oil/water environment, for example, within an oil transport pipeline. The systems and methods allow delivery of the capsules to targeted areas of the multiphase environment, for example, to a water phase or a water/metal interface.
    Type: Application
    Filed: August 16, 2019
    Publication date: February 27, 2020
    Inventors: Fang Cao, Mohsen S. Yeganeh, Yao Xiong, David S. Fischer, Aruna Mohan, Wei Li
  • Publication number: 20180275111
    Abstract: A method for testing properties of a pressurized multiphase fluid sample containing at least hydrocarbons and water. The pressurized multiphase fluid sample is placed into a first pressurized chamber of a testing device. The water is separated from the hydrocarbons. At least part of the separated water is flowed through a first outlet in the first pressurized chamber and into a second pressurized chamber. The second pressurized chamber is optionally isolated from the first pressurized chamber. A pH level of the separated water is tested in the second pressurized chamber. Microbial activity and growth is tested for in the pressurized multiphase fluid in the first pressurized chamber. A pressure of the pressurized multiphase fluid is substantially maintained throughout the placing, separating, flowing, isolating, and testing steps.
    Type: Application
    Filed: March 8, 2018
    Publication date: September 27, 2018
    Inventors: Joseph W. Stolle, Yao Xiong, Dennis R. Enning, David S. Fischer, Manuel A. Castelan
  • Publication number: 20120238439
    Abstract: Castable silicon-based compositions have enhanced toughness and related properties compared to silicon. The con-based compositions comprise silicon at a concentration greater than 50% by weight and one or more additional elements in structure comprising a cubic silicon phase and an additional phase which may impart toughness through mechanisms related to plastic flow or crack interaction with interfacial boundaries.
    Type: Application
    Filed: August 19, 2010
    Publication date: September 20, 2012
    Applicant: Massachusetts Institute of Technology
    Inventors: Christopher A. Schuh, David S. Fischer
  • Patent number: 5397146
    Abstract: A protective device for protecting a frame member of a bicycle is disclosed. The device comprises a tubular section having a frame member engaging surface and an exterior surface which is opposite to the frame member engaging surface, the frame member engaging surface and the exterior surface forming a first edge defining a first aligning portion along the first edge. The frame member engaging surface and the exterior surface further form a second edge defining a second aligning portion along the second edge. The first and second edges are spaced apart from each other and opposite from each other when the tubular section is around the frame member in a protective position. The tubular section is dimensioned to span substantially the length of the frame member when the tubular section is positioned over the frame member and the aligning portions are positionable around the frame member when the tubular section is positioned over the frame member.
    Type: Grant
    Filed: March 7, 1994
    Date of Patent: March 14, 1995
    Inventor: David S. Fischer