Patents by Inventor Valter Guardiani

Valter Guardiani 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).

  • High-speed process for producing acrylic fibers and relative apparatus
    Patent number: 11946167
    Abstract: A process for the production of acrylic fibers, in particular a spinning process for obtaining precursor fibers of carbon fiber by the wet spinning of a polymer solution in an organic solvent and the relative apparatus.
    Type: Grant
    Filed: November 7, 2022
    Date of Patent: April 2, 2024
    Assignee: Montefibre Mae Technologies S.r.l.
    Inventors: Franco Francalanci, Pierluigi Gozzo, Ana Paula Vidigal, Marco Rovellini, Valter Guardiani
  • Compact module for the wet spinning of chemical fibres
    Patent number: 11788209
    Abstract: Compact module for wet spinning of chemical fibres of the type comprising a spinning head (F) of 2-8 tows (S), each one consisting of a plurality of continuous filaments, relative supply pumps (P) of the spinning solution, a coagulation tank (V) containing a coagulation solution, and a plurality of drive rollers (2) and respective idle diverter rollers (3) which determine a zigzag path of the tows (S) downstream of the spinning area, in the rectilinear lengths of which liquid-based treatments are carried out on said tows (S). The rectilinear lengths of said zigzag path are horizontal and said liquid-based treatments on the tows (S) are carried out in horizontal treatment trays (4) of the spillway type.
    Type: Grant
    Filed: March 11, 2021
    Date of Patent: October 17, 2023
    Assignee: M.A.E. S.p.A.
    Inventors: Valter Guardiani, Paolo Delledonne, Fiorenzo Rasparini, Alfredo Tanzi, Paola Gandolfi, Marco Rovellini
  • HIGH-SPEED PROCESS FOR PRODUCING ACRYLIC FIBERS AND RELATIVE APPARATUS
    Publication number: 20230160108
    Abstract: A process for the production of acrylic fibers, in particular a spinning process for obtaining precursor fibers of carbon fiber by the wet spinning of a polymer solution in an organic solvent and the relative apparatus.
    Type: Application
    Filed: November 7, 2022
    Publication date: May 25, 2023
    Inventors: Franco FRANCALANCI, Pierluigi GOZZO, Ana Paula VIDIGAL, Marco ROVELLINI, Valter GUARDIANI
  • Compact Module for the Wet Spinning of Chemical Fibres
    Publication number: 20210285130
    Abstract: Compact module for wet spinning of chemical fibres of the type comprising a spinning head (F) of 2-8 tows (S), each one consisting of a plurality of continuous filaments, relative supply pumps (P) of the spinning solution, a coagulation tank (V) containing a coagulation solution, and a plurality of drive rollers (2) and respective idle diverter rollers (3) which determine a zigzag path of the tows (S) downstream of the spinning area, in the rectilinear lengths of which liquid-based treatments are carried out on said tows (S). The rectilinear lengths of said zigzag path are horizontal and said liquid-based treatments on the tows (S) are carried out in horizontal treatment trays (4) of the spillway type.
    Type: Application
    Filed: March 11, 2021
    Publication date: September 16, 2021
    Inventors: Valter Guardiani, Paolo Delledonne, Fiorenzo Rasparini, Alfredo Tanzi, Paola Gandolfi, Marco Rovellini