Patents by Inventor Bhima Sastri

Bhima Sastri 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).

  • DEWATERING VISCOUS LIQUIDS WITH PRESSURIZED CARBON DIOXIDE
    Publication number: 20230115487
    Abstract: Methods of dewatering viscous materials are provided. The method comprises contacting the viscous material with pressurized carbon dioxide at a temperature and for a time wherein at least a fraction of water is expressed from the viscous material. Then the pressure is released, and the water expressed from the viscous material is removed to yield a dewatered product. Exemplary viscous materials that can be dewatered by the method include black liquor from wood pulping operations, wet lignin, wet super water absorbent polymers and sugar solutions. The pressurized carbon dioxide is present in subcritical or supercritical form. The method provides dewatering at reduced cost.
    Type: Application
    Filed: September 28, 2022
    Publication date: April 13, 2023
    Applicant: Auburn University
    Inventors: Osei Asafu-Adjaye, Brian Via, Bhima Sastri, Sujit Banerjee
  • High gloss and high bulk paper
    Patent number: 7070679
    Abstract: The invention teaches a method of manufacturing a high bulk, high gloss paperweb using a supercalender operation. A paperweb surface is coated with a plastic pigment. The paperweb is run through a multi-nip calender device wherein the nip load of the paperweb is maintained at a load of about 1,000 pounds per linear inch at each nip. The temperature of the hard rolls are about 450 degrees Farenheit or less.
    Type: Grant
    Filed: January 16, 2003
    Date of Patent: July 4, 2006
    Assignee: NewPage Corporation
    Inventors: David B. Cason, S. Craig Petro, Stig V. Renvall, Bhima Sastri
  • Method of producing high gloss paper
    Publication number: 20030121634
    Abstract: The invention teaches a method of manufacturing a high bulk, high gloss paperweb using a supercalender operation. A paperweb surface is coated with a plastic pigment. The paperweb is run through a multi-nip calender device wherein the nip load of the paperweb is maintained at a load of about 1,000 pounds per linear inch at each nip. The temperature of the hard rolls are about 450 degrees Farenheit or less.
    Type: Application
    Filed: January 16, 2003
    Publication date: July 3, 2003
    Inventors: David B. Cason, S. Craig Petro, Stig V. Renvall, Bhima Sastri