Patents by Inventor John H. Udelhofen

John H. Udelhofen 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 the preparation of overbased molybdenum alkaline earth metal and alkali metal dispersions
    Patent number: 4832857
    Abstract: A process for incorporating molybdenum into overbased alkaline earth metal and alkali metal sulfonates, phenates and salicylates. The incorporation is a post addition of molybdenum into a previously prepared overbased composition. The resulting composition containing molybdenum is gel-free, haze-free, precipitate-free, has a reproducible Total Base Number (TBN) and is commercially acceptable for use in lubricating oil compositions.
    Type: Grant
    Filed: August 18, 1988
    Date of Patent: May 23, 1989
    Assignee: Amoco Corporation
    Inventors: Mack W. Hunt, John H. Udelhofen
  • Transamination process for Mannich products
    Patent number: 4334085
    Abstract: A transamination process for producing Mannich products comprising reacting a polyamine with a substantially formaldehyde-free mononitrogen Mannich adduct.
    Type: Grant
    Filed: September 14, 1978
    Date of Patent: June 8, 1982
    Assignee: Standard Oil Company (Indiana)
    Inventors: Robert J. Basalay, John H. Udelhofen
  • Low viscosity oils
    Patent number: 4282106
    Abstract: An improved low viscosity (i.e.) 5 W to 71/2 W engine oil resistant to oxidation and consumption comprising a major portion of a lubricating oil stock, a sulfurized oil, a dispersant, an anti-corrosion agent, an anti-rust agent, a detergent, an anti-oxidant, and a viscosity index improver.
    Type: Grant
    Filed: October 5, 1979
    Date of Patent: August 4, 1981
    Assignee: Standard Oil Company (Indiana)
    Inventors: Luke A. Schaap, John H. Udelhofen, Samuel W. Harris
  • Liquid hydrocarbon fuels containing high molecular weight Mannich bases
    Patent number: 4231759
    Abstract: Reaction products obtained from the Mannich condensation of high molecular weight alkyl-substituted hydroxy aromatic compounds, amines and aldehydes provide improved detergency in liquid hydrocarbon fuels. Optionally, a non-volatile hydrocarbon carrier fluid may be included.
    Type: Grant
    Filed: March 12, 1973
    Date of Patent: November 4, 1980
    Assignee: Standard Oil Company (Indiana)
    Inventors: John H. Udelhofen, Roger W. Watson
  • Tertiary carbinamine modified mannich compositions and lubricants containing same
    Patent number: 4202784
    Abstract: Mannich additives formed from a tertiary carbinamine, a substantially hydrocarbon compound having at least one acidic or active hydrogen, a polyamine and a formaldehyde-yielding reagent.
    Type: Grant
    Filed: April 9, 1979
    Date of Patent: May 13, 1980
    Assignee: Standard Oil Company (Indiana)
    Inventors: Paul J. Cahill, John H. Udelhofen