Patents Assigned to Malwa Industries Limited
  • Process for indigo dyeing of wool and wool blends
    Patent number: 8187342
    Abstract: A process for indigo dyeing of wool and wool blends comprising the steps of subjecting the wool and wool blends to a step of pretreatment by impregnation with a shrink resistance agent, subjecting the pretreated wool and wool blend yarns to the step of indigo dyeing and post dyeing, wherein the step of dyeing and post dyeing includes a single step or a plurality of steps of impregnation of the pretreated wool and wool blends in an indigo dye bath followed each time by the step of oxidation.
    Type: Grant
    Filed: September 18, 2003
    Date of Patent: May 29, 2012
    Assignee: Malwa Industries Limited
    Inventors: Jangi Lal Oswal, Rishi Oswal
  • Process for Dyeing of Wool or Silk and Their Blends with Indigo
    Publication number: 20100205751
    Abstract: A process for pretreatment of wool, silk or blends thereof rendering it receptive for the subsequent step of indigo dyeing. The pretreatment steps comprise in the step of cationization for imparting cationic charge and generating other dye combining sites.
    Type: Application
    Filed: June 27, 2006
    Publication date: August 19, 2010
    Applicant: MALWA INDUSTRIES LIMITED
    Inventors: Jangi Lal Oswal, Rishi Oswal
  • Process for indigo dyeing of wool and wool blends
    Publication number: 20070107144
    Abstract: A process for indigo dyeing of wool and wool blends comprising the steps of subjecting the wool and wool blends to a step of pretreatment by impregnation with a shrink resistance agent, subjecting the pretreated wool and wool blend yarns to the step of indigo dyeing and post dyeing, wherein the step of dyeing and post dyeing includes a single step or a plurality of steps of impregnation of the pretreated wool and wool blends in an indigo dye bath followed each time by the step of oxidation.
    Type: Application
    Filed: September 18, 2003
    Publication date: May 17, 2007
    Applicant: Malwa Industries Limited
    Inventors: Jangi Oswal, Rishi Oswal