Patents by Inventor Joseph L. Niedzwiecki

Joseph L. Niedzwiecki 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).

  • Process for separating hydrocarbons
    Patent number: 4954247
    Abstract: A process for improving the separation of a hydrocarbonaceous oil is provided, in which the oil is separated into fractions in an atmospheric distillation zone. The heavy bottoms fraction (atmospheric residuum) is split into two streams. One stream is passed through a heating zone and, subsequently, to a vacuum separation zone. The other stream by-passes the heating zone and is introduced directly into the vacuum separation zone.
    Type: Grant
    Filed: October 17, 1988
    Date of Patent: September 4, 1990
    Assignee: Exxon Research and Engineering Company
    Inventors: Gregory M. Lipkin, Joseph L. Niedzwiecki
  • Process for separating hydrocarbons
    Patent number: 4919794
    Abstract: A process for improving the separation of a hydrocarbon mixture is provided in which the hydrocarbon mixture is separated into fractions in a distillation zone. A liquid fraction and a portion of the vapor phase fraction are removed from the distillation zone as sidestream and introduced into a separation zone comprising a stripping gas to be stripped simultaneously. The resulting stripped vapor is recycled to an upper portion of the distillation zone.
    Type: Grant
    Filed: October 17, 1988
    Date of Patent: April 24, 1990
    Assignee: Exxon Research and Engineering Company
    Inventors: Gregory M. Lipkin, Joseph L. Niedzwiecki
  • Process for removing hydrogen sulfide from waste water
    Patent number: 4853002
    Abstract: Hydrogen sulfide is removed form a water stream comprising hydrogen sulfide and a high concentration of a Group IIA metal component such as magnesium and calcium components by maintaining the water stream at a specific acidic pH range and a specified temperature, and subjecting the resulting acidified hot water stream to vacuum flashing, in the absence of a stripping gas.
    Type: Grant
    Filed: April 15, 1988
    Date of Patent: August 1, 1989
    Assignee: Exxon Research and Engineering Company
    Inventors: Joseph L. Niedzwiecki, Ralph G. Wolfe