Patents by Inventor Arto Tonttila

Arto Tonttila 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).

  • Hydraulic oil based on esters of tall oil and method for its manufacturing
    Patent number: 6406643
    Abstract: Hydraulic oil including an ester of tall oil obtained with at least one polyvalent alcohol selected from the group consisting of a polyhydroxy compound of neopentane and poly(ethyleneglycol), an oxidation inhibitor, a corrosion inhibitor, an antifoam agent, and an EP lubricant.
    Type: Grant
    Filed: September 4, 1998
    Date of Patent: June 18, 2002
    Assignee: Voitelukeskus Tonitila Oy
    Inventors: Ari Lindén, Arto Tonttila, Mika Tonttila
  • HYDRAULIC OIL AND METHOD FOR ITS MANUFACTURING
    Publication number: 20010005008
    Abstract: The hydraulic oil is based on natural fatty acid esters. The basic material of the hydraulic oil is selected from the following esters of tall oil or their mixture: ester of a polyhydroxy compound of neopentane, such as trimethylolpropane ester (TMP ester), pentaerythritol ester, trimethylolethane ester, trimethylolbutane ester, neopentyl glycol ester, and poly(ethyleneglycol) ester, and it further contains at least an oxidation inhibitor, a corrosion inhibitor, an antifoam agent, and an EP lubricant.
    Type: Application
    Filed: September 4, 1998
    Publication date: June 28, 2001
    Applicant: Ari Linden
    Inventors: ARI LINDEN, ARTO TONTTILA, MIKA TONTTILA