Patents by Inventor Vladimir P. Grudinin

Vladimir P. Grudinin 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).

  • Method for recovery of wastewater residues
    Patent number: 4481072
    Abstract: A method for recovery of wastewater residues containing the activated sludge biomass, fibre and bark comprising the steps of treating these with alkali solution having a concentration of 5-80 g/l on the Na.sub.2 O basis at a temperature of 20.degree.-70.degree. C. and dewatering the reaction mixture obtained, the alkali filtrate decanted containing the activated sludge alkali hydrolysis products being used to dissolve the melt in the course of preparing the alkali pulping liquor, and the dewatered alkali mass being added, in an amount of up to 40 percent by mass, to the fibred mass composition for the manufacture of cardboard and wood-fibre board.
    Type: Grant
    Filed: August 20, 1982
    Date of Patent: November 6, 1984
    Assignee: Vsesojuznoe Nauchno-Proizvodstven Noe Obiedinenie Tselljulozno-Bumazhnoi Promyshlennosti
    Inventors: Vladimir P. Grudinin, Boris M. Bukhteev, Tatyana V. Dergunova