Patents by Inventor Angelo Rizzardi

Angelo Rizzardi 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).

  • Publication number: 20060112495
    Abstract: A process and formulation for pre-treating a cellulosic, or cellulosic blend with synthetic fiber, substrate, achieving sufficient clearness and appropriate absorbency prior to dyeing the substrate. The process having the steps of: providing a vessel; providing a cellulosic, or their blends with synthetic fiber, substrate; providing a water bath; adding an active amount of an activating compound selected from the group of: salts of organic acids, organic amine derivatives, transitional metals salts and complexes, pigments, and combinations thereof; adding an active amount of caustic soda; adding an active amount of hydrogen peroxide; achieving a pH from about 6.0 to about 9.0 at the end of the bleaching cycle; heating the water bath to a temperature in excess of 50 degrees centigrade for a pre-determined period of time; and dropping the bath.
    Type: Application
    Filed: January 17, 2006
    Publication date: June 1, 2006
    Inventors: Angelo Rizzardi, Michael Grigat
  • Patent number: 7044985
    Abstract: A process and formulation for pre-treating a cellulosic, or cellulosic blend with synthetic fiber, substrate, achieving sufficient clearness and appropriate absorbency prior to dyeing the substrate. The process having the steps of: providing a vessel; providing a cellulosic, or their blends with synthetic fiber, substrate; providing a water bath; adding an active amount of an activating compound selected from the group of: salts of organic acids, organic amine derivatives, transitional metals salts and complexes, pigments, and combinations thereof; adding an active amount of caustic soda; adding an active amount of hydrogen peroxide; achieving a pH from about 6.0 to about 9.0 at the end of the bleaching cycle; heating the water bath to a temperature in excess of 50 degrees centigrade for a pre-determined period of time; and dropping the bath.
    Type: Grant
    Filed: December 15, 2000
    Date of Patent: May 16, 2006
    Assignee: Clariant Finance (BVI) Limited
    Inventors: Angelo Rizzardi, Michael Grigat
  • Publication number: 20050208306
    Abstract: A process for forming a substrate having a desired performance finish or finishes applied thereto. The process involves applying a foam containing a selected performance finish to a selected substrate side in such a manner that the performance finish is inhibited from transpassing through the substrate to the opposed substrate side. Accordingly, the performance characteristic of the finish is exhibited only on the side of the substrate to which the finish was applied. Additionally, the process may involve applying a second foam having a second distinct performance finish to the opposed side of the substrate in such a manner that only the second side exhibits the characteristics of the second finish. Various parameters used to control transpassing of the finish through the substrate include, singularly and/or in combination, finishing bath chemistry, foam characterization, pH of the finishing bath and freezing moisture that is within the substrate.
    Type: Application
    Filed: March 19, 2004
    Publication date: September 22, 2005
    Inventor: Angelo Rizzardi
  • Publication number: 20020007515
    Abstract: A process and formulation for pre-treating a cellulosic, or cellulosic blend with synthetic fiber, substrate, achieving sufficient clearness and appropriate absorbency prior to dyeing the substrate. The process having the steps of: providing a vessel; providing a cellulosic, or their blends with synthetic fiber, substrate; providing a water bath; adding an active amount of an activating compound selected from the group of: salts of organic acids, organic amine derivatives, transitional metals salts and complexes, pigments, and combinations thereof; adding an active amount of caustic soda; adding an active amount of hydrogen peroxide; achieving a pH from about 6.0 to about 9.0 at the end of the bleaching cycle; heating the water bath to a temperature in excess of 50 degrees centigrade for a pre-determined period of time; and dropping the bath.
    Type: Application
    Filed: December 15, 2000
    Publication date: January 24, 2002
    Applicant: Clariant Finance (BVl)
    Inventors: Angelo Rizzardi, Michael Grigat
  • Patent number: 6176884
    Abstract: A continuous fabric rinsing process and apparatus utilizing hot water applied in a rotating cylindrical rinsing roller device, for use in conventional steaming apparatus chambers where the preparation, dyeing and/or printing of fabric typically occurs. The fabric rinsing apparatus has an innermost perforated pipe along the longitudinal axis of the cylindrical rinsing roller that serves as a source of hot water which traverses rotating apertures present on the rinsing roller. The rinsing roller also contains external curvilinear rotor blades which propel the hot water outward through a rotating net cylinder, in order to clean a pretreated, dyed and/or printed fabric sheet continuously moving along an endless net belt. At least two steam injectors, appropriately located within the same steam chamber, are positioned in opposite directions in order to uniformly remove, by a steam-stream action, the undesirable contaminants, as well as partially dry the rinsed fabric sheet.
    Type: Grant
    Filed: March 4, 1999
    Date of Patent: January 23, 2001
    Inventor: Angelo Rizzardi
  • Patent number: 5047064
    Abstract: A method is provided for improving the dyeability and other properties of cellulosic materials, especially knitted cotton goods, wherein the material is impregnated with an aqueous liquor containing an effective amount of potassium hydroxide and preferably also an alkali metal silicate, a wetting agent and a sequestering agent, at a temperature of at least about 7.degree. C. (45.degree. F.). The application of tension is not necessary and the treatment is particularly useful for tubular knitted goods.
    Type: Grant
    Filed: August 14, 1989
    Date of Patent: September 10, 1991
    Assignee: Sandoz Ltd.
    Inventor: Angelo Rizzardi
  • Patent number: 4568349
    Abstract: The invention relates to a process for alkali-dry treating cellulosic fibre goods comprising the steps of(a) treating the goods with an aqueous caustic soda solution of 18.degree.-26.degree. Baume, followed by(b) drying the treated goods under tension without an intermediate rinsing or neutralization step.The aqueous caustic soda solution used in step (a) may further contain a lubricant and wetting agents.
    Type: Grant
    Filed: August 16, 1982
    Date of Patent: February 4, 1986
    Assignee: Sandoz Ltd.
    Inventor: Angelo Rizzardi