Patents by Inventor Per Nettli

Per Nettli 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 dewatering a proteinaceous, aqueous sludge and for removing and recovering precipitating agents from a precipitate containing proteinaceous substances
    Patent number: 3936375
    Abstract: A proteinaceous aqueous sludge, previously precipitated with a precipitating agent, is mixed with calcium chloride, and treated with a base selected from the group consisting of alkali metal hydroxides and alkaline earth metal hydroxides to adjust the pH to a value in the range of 6.5-9.5. The mixture is then heated to a temperature in the range of 60.degree.-120.degree.C. to coagulate and agglomerate the sludge, which is then separated from the aqueous phase containing the precipitating agent.
    Type: Grant
    Filed: September 25, 1974
    Date of Patent: February 3, 1976
    Assignee: A/S Apothekernes Laboratorium for Specialpraeparater
    Inventor: Per Nettli