Patents by Inventor Branko Urbas

Branko Urbas 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 production of 3,4-dideoxyhexitol
    Patent number: 4820880
    Abstract: A process for the production of 3,4-dideoxyhexitol and for its cyclodehydration to 2,5-bis(hydroxymethyl)tetrahydrofuran. The 3,4-dideoxyhexitol is obtained by hydrogenolysis in the presence of a copper chromite catalyst, of hexitols, or of compound which undergo reaction with hydrogen to give hexitols.
    Type: Grant
    Filed: May 18, 1987
    Date of Patent: April 11, 1989
    Assignee: Michigan Biotechnology Institute
    Inventor: Branko Urbas
  • Concentration of organic chemicals from dilute aqueous solutions
    Patent number: 4691055
    Abstract: An improved process is provided for concentrating organic compounds from dilute aqueous solutions such as fermentation liquors. Conventional distillation of the compounds to remove the bulk of the water is eliminated by selective adsorption on adsorbent carbon. The compounds are eluted from the carbon with the vapors of a volatile solvent and then the volatile solvent is evaporated from the eluate to give a concentrated aqueous solution containing at least 30% by weight of the organic compounds.
    Type: Grant
    Filed: December 7, 1981
    Date of Patent: September 1, 1987
    Assignee: CPC International Inc.
    Inventor: Branko Urbas
  • Recovery of organic acids from a fermentation broth
    Patent number: 4444881
    Abstract: A process is provided for the recovery of organic acids from dilute aqueous solutions. The acid in the form of its calcium salt is treated with a tertiary amine carbonate and the resulting trialkylammonium salt of the acid is isolated and heated to give the acid plus a tertiary amine.
    Type: Grant
    Filed: June 27, 1983
    Date of Patent: April 24, 1984
    Assignee: CPC International Inc.
    Inventor: Branko Urbas
  • Recovery of acetic acid from a fermentation broth
    Patent number: 4405717
    Abstract: A process is provided for the recovery of acetic acid from dilute aqueous solutions. The acid in the form of its calcium salt is treated with a tertiary amine carbonate and the resulting trialkylammonium acetate is isolated and heated to give the acetic acid plus a tertiary amine.
    Type: Grant
    Filed: October 26, 1981
    Date of Patent: September 20, 1983
    Assignee: CPC International Inc.
    Inventor: Branko Urbas