Patents by Inventor Ralph G. Wolfe

Ralph G. Wolfe 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).

  • Removal of glycols from a polyalkylene glycol dialkyl ether solution
    Patent number: 4962238
    Abstract: The removal of a glycol contaminant from a mixture of polyalkylene glycol dialkyl ethers is achieved using a dual solvent extraction process. The process is particularly applicable to removing glycols which accumulate in recirculating solutions of polyalkylene glycol dialkyl ethers used for the absorption of acid gases from feedstocks such as natural gas, synthetic natural gas, refinery gas, and ammonia synthesis gas.
    Type: Grant
    Filed: October 4, 1989
    Date of Patent: October 9, 1990
    Assignee: Exxon Research and Engineering Company
    Inventors: Ralph G. Wolfe, Dennis P. Maloney, Robert E. Steele, Constantine Tsonopoulos, Eugene R. Thomas
  • 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