Patents by Inventor Daya Ram Chaurasia

Daya Ram Chaurasia 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).

  • Process for preparing a flame retardant and glow resistant zinc free cellulose product
    Patent number: 7776180
    Abstract: Provided is a process for the preparation of flame retardant cellulosic product including the steps of adding a soluble salt of silica to viscose, followed by blending and extruding the blended viscose into a spin bath, regenerating the viscose and subjecting the regenerated viscose to a step of glow proofing with polyaluminium compounds to obtain the flame retardant cellulosic product.
    Type: Grant
    Filed: July 16, 2009
    Date of Patent: August 17, 2010
    Assignee: Birla Research Institute for Applied Sciences
    Inventors: Aditya Narayan Shrivastava, Brij Bhushan Koutu, Rajeev Kumar Sharma, Daya Ram Chaurasia
  • Flame retardant and glow resistant zinc free cellulose product
    Patent number: 7651590
    Abstract: A flame retardant and glow resistant zinc free cellulose product containing silica, modified with polyaluminium ions. In the preparation of product the cellulose solution (viscose) and sodium silicate are blended and regenerated to obtain a polymeric silica in the cellulose structure which is further modified with polyaluminium ions to attach aluminium sites on silica molecules to make the product glow resistant and impart wash fastness as well.
    Type: Grant
    Filed: April 25, 2006
    Date of Patent: January 26, 2010
    Assignee: Birla Research Institute for Applied Sciences
    Inventors: Aditya Narayan Shrivastava, Brij Bhushan Koutu, Rajeev Kumar Sharma, Daya Ram Chaurasia
  • Process for Preparing A Flame Retardant and Glow Resistent Zinc Free Cellulose Product
    Publication number: 20090272951
    Abstract: Provided is a process for the preparation of flame retardant cellulosic product including the steps of adding a soluble salt of silica to viscose, followed by blending and extruding the blended viscose into a spin bath, regenerating the viscose and subjecting the regenerated viscose to a step of glow proofing with polyaluminium compounds to obtain the flame retardant cellulosic product.
    Type: Application
    Filed: July 16, 2009
    Publication date: November 5, 2009
    Applicant: Birla Research Institute for Applied Research
    Inventors: Aditya Narayan Shrivastava, Brij Bhushan Koutu, Rajeev Kumar Sharma, Daya Ram Chaurasia