Patents by Inventor Finn Alstin

Finn Alstin 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).

  • Patent number: 9937439
    Abstract: A solvent extraction apparatus comprises a cooler for condensing solvent vapor and a funnel provided towards its lower end. The funnel has an upper surface at which terminates a central downwards directed elongate outlet having an internal exit port formed in a side wall. A vertically movable lifting rod passes through the cooler and the outlet. A section of the lifting rod is shaped to delimit a passage-way for condensate while simultaneously sealing the port. A liquid guide is provided at the upper surface to preferentially direct flow of condensate towards the passage-way.
    Type: Grant
    Filed: February 5, 2013
    Date of Patent: April 10, 2018
    Assignee: Foss Analytical AB
    Inventors: Finn Alstin, Thomas Palm
  • Publication number: 20150367250
    Abstract: A solvent extraction apparatus comprises a cooler for condensing solvent vapour and a funnel provided towards its lower end. The funnel has an upper surface at which terminates a central downwards directed elongate outlet having an internal exit port formed in a side wall. A vertically movable lifting rod passes through the cooler and the outlet. A section of the lifting rod is shaped to delimit a passage-way for condensate whilst simultaneously sealing the port. A liquid guide is provided at the upper surface to preferentially direct flow of condensate towards the passage-way.
    Type: Application
    Filed: February 5, 2013
    Publication date: December 24, 2015
    Inventors: Finn ALSTIN, Thomas PALM
  • Patent number: 5961787
    Abstract: A solvent extraction apparatus which includes a heating plate, a vessel for containing a solvent, an extraction thimble to obtain a sample to be extracted from said vessel and a cooler for condensing evaporated solvent vapors. The cooler is connected to the vessel for containing the solvent, preferably by an adaptor. A lifting rod is provided which passes through the cooler which, at its lower portion, is provided with a drip rim on which the extraction thimble is detachably fixed. The thimble can be moved vertically by the lifting rod and the flow of solvent into and out of the cooler can be regulated by the lifting rod.
    Type: Grant
    Filed: December 16, 1997
    Date of Patent: October 5, 1999
    Assignee: Foss Tecator AB
    Inventors: Goran Persson, Finn Alstin