Patents by Inventor Peter Collen Hamblin

Peter Collen Hamblin 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).

  • Lubricant compositions comprising thiophosphoric acid esters and dithiophosphoric acid esters
    Patent number: 6531429
    Abstract: The invention relates to improved compositions comprising thiophosphoric acid esters and dithiophosphoric acid esters or phosphoric acid thioesters and oil additives from the group of the polyol partial esters, amines and epoxides, and also to the use of those lubricant compositions in improving the performance properties of lubricants, such as greases, metal-working fluids, gear fluids or hydraulic fluids. Thiophosphoric acid esters and dithiophosphoric acid esters or phosphoric acid thioesters are present in the compositions preferably in a concentration of less than 400 ppm.
    Type: Grant
    Filed: August 17, 2001
    Date of Patent: March 11, 2003
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Michael Fletschinger, Peter Rohrbach, Peter Collen Hamblin, Dudley Clark, Marc Ribeaud
  • Stabilized hydrotreated and hydrowaxed lubricant compositions
    Patent number: 6410490
    Abstract: The instant invention relates to a lubricant composition stabilized against the deleterious effects of heat and oxygen. The composition comprises a hydrotreated or hydrodewaxed oil and an effective antioxidant stabilizing amount of a mixture of a phenolic antioxidant; an N,N-disubstituted aminomethyl-1,2,4-triazole; an aromatic amine antioxidant; an alkyl phenoxy alkanoic acid; and an N-acyl sarcosine derivative. Optionally, further additives are added to the subject lubricant compositions.
    Type: Grant
    Filed: May 18, 2000
    Date of Patent: June 25, 2002
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Jose L. Reyes-Gavilan, Frederick T. Lichtenberg, Adesola O. Oshode, Miles J. Hutchings, Peter Collen Hamblin, Michael Fletschinger, Peter Rohrbach
  • Lubricant compositions comprising thiophosphoric acid esters and dithiophosphoric acid esters
    Publication number: 20020016266
    Abstract: The invention relates to improved compositions comprising thiophosphoric acid esters and dithiophosphoric acid esters or phosphoric acid thioesters and oil additives from the group of the polyol partial esters, amines and epoxides, and also to the use of those lubricant compositions in improving the performance properties of lubricants, such as greases, metal-working fluids, gear fluids or hydraulic fluids. Thiophosphoric acid esters and dithiophosphoric acid esters or phosphoric acid thioesters are present in the compositions preferably in a concentration of less than 400 ppm.
    Type: Application
    Filed: August 17, 2001
    Publication date: February 7, 2002
    Inventors: Michael Fletschinger, Peter Rohrbach, Peter Collen Hamblin, Dudley Clark, Marc Ribeaud
  • New additives for lubricants
    Patent number: 4080307
    Abstract: New ammonium salts of 1,3-oxa- or 1,3-thia-phosphetanes are suitable additives for mineral and/or synthetic lubricants.
    Type: Grant
    Filed: April 6, 1977
    Date of Patent: March 21, 1978
    Assignee: Ciba-Geigy AG
    Inventors: Andreas Schmidt, Peter Collen Hamblin