Patents Represented by Law Firm Watson, Ralph M.
  • Preparation of high permeability cellulose fibers containing enzymes
    Patent number: 3947325
    Abstract: High permeability cellulose fibers containing enzymes are formed by preparing a solution of nitrocellulose in a solvent that is insoluble in water, preparing an aqueous enzyme solution, mixing together the nitrocellulose and enzyme solutions and emulsifying the mixture, spinning the emulsion into a coagulating bath to produce fibers englobing enzymes and treating the fibers with a reducing agent under conditions which do not damage the enzymes so that nitro groups are removed from the nitrocellulose.
    Type: Grant
    Filed: April 11, 1974
    Date of Patent: March 30, 1976
    Assignee: Snamprogetti S.p.A.
    Inventors: Dino Dinelli, Francesco Bartoli, Silvio Gulinelli