Patents by Inventor Emil Merki

Emil Merki 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 cleaning rolling oils
    Patent number: 5332510
    Abstract: Process for cleaning rolling oils which, when contaminated, contain rolling fines originating from metals being processed into semi-finished products in strip form, in particular light weight metals, e.g. aluminum fines. An addition of 2 to 8 g of dimeric oleic acid is made to each 1000 g of contaminated oil and the mixture passed through a coagulator whereby the rolling fines coagulate and can be readily removed from the contaminated oil. The purified oil can be recirculated as rolling oil.
    Type: Grant
    Filed: October 18, 1993
    Date of Patent: July 26, 1994
    Assignee: Alusuisse-Lonza Services Ltd.
    Inventors: Rudolf Baur, Hanspeter Krahenbuhl, Urs Giger, Emil Merki
  • Process for cleaning rolling lubricant
    Patent number: 4293424
    Abstract: Lubrication oils used in rolling strip and foil in the light metal industing are contaminated with fine metallic particles during rolling. The process described here allows these oils to be cleaned either continuously or in a batch process by adding a strongly alkaline solution to the warm contaminated oil whereby these fine particles coagulate and can be separated out by means of centrifuging or filtering.
    Type: Grant
    Filed: September 19, 1977
    Date of Patent: October 6, 1981
    Assignee: Swiss Aluminium Ltd.
    Inventors: Rudolf Baur, Emil Merki, Hanspeter Krahenbuhl