Patents by Inventor Kausar Jamal Cheema

Kausar Jamal Cheema 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).

  • Environmentally benign TCF bleaching sequences for AS/AQ wheat straw pulp
    Patent number: 8080129
    Abstract: This invention reports an environmentally benign method of delignifying bleaching sequences to gain more than 80% ISO brightness for alkaline sulfite-anthraquinone (AS/AQ) wheat straw pulp comprising of AOPsYP0, AOPsEP0 and AOPsP0P1 sequences that yielded surprising results in the field of pulp and paper technology; wherein the selectivity of sequences resulted in the protection of ?-cellulose from degradation, produced significant drop in acid soluble lignin and yielded low viscosity losses reducing ecological impact of effluent load.
    Type: Grant
    Filed: November 17, 2009
    Date of Patent: December 20, 2011
    Inventors: Naila Yaqoob, Ishtiaq-Ur-Rehman, Kausar Jamal Cheema, Sahibzada Rashad Hameed, Bushra Mateen
  • ENVIRONMENTALLY BENIGN TCF BLEACHING SEQUENCES FOR AS/AQ WHEAT STRAW PULP
    Publication number: 20110114273
    Abstract: This invention reports an environmentally benign method of delignifying bleaching sequences to gain more than 80% ISO brightness for alkaline sulfite-anthraquinone (AS/AQ) wheat straw pulp comprising of AOPsYP0, AOPsEP0 and AOPsP0P1 sequences that yielded surprising results in the field of pulp and paper technology; wherein the selectivity of sequences resulted in the protection of ?-cellulose from degradation, produced significant drop in acid soluble lignin and yielded low viscosity losses reducing ecological impact of effluent load.
    Type: Application
    Filed: November 17, 2009
    Publication date: May 19, 2011
    Inventors: Naila Yaqoob, Ishtiaq-Ur-Rehman, Kausar Jamal Cheema, Sahibzada Rashad Hameed, Bushra Mateen