Patents by Inventor Douglas W. COFFIN

Douglas W. COFFIN 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).

  • PAPER PRODUCTS AND PULPS WITH SURFACE ENHANCED PULP FIBERS AND INCREASED ABSORBENCY, AND METHODS OF MAKING SAME
    Publication number: 20220412006
    Abstract: Paper products such as tissues can be made using a furnish comprising surface enhanced pulp fibers (“SEPF”). In some embodiments, SEPF have a weighted average fiber length of at least 0.3 millimeters (mm) and an average hydrodynamic specific surface area of at least 10 square meters per gram (m2/g). In some embodiments, a furnish or a paper product can comprise at least 2% SEPF by dry weight. In some embodiments, a paper product comprising SEPF can be formed from a furnish having a freeness of 650 ml Canadian Standard Freeness (CSF) or less, optionally 600 ml CSF or less.
    Type: Application
    Filed: August 30, 2022
    Publication date: December 29, 2022
    Inventors: Harshad PANDE, Douglas W. COFFIN, Mona ALINEJAD
  • Paper products and pulps with surface enhanced pulp fibers and increased absorbency, and methods of making same
    Patent number: 11441271
    Abstract: Paper products such as tissues can be made using a furnish comprising surface enhanced pulp fibers (“SEPF”). In some embodiments, SEPF have a weighted average fiber length of at least 0.3 millimeters (mm) and an average hydrodynamic specific surface area of at least 10 square meters per gram (m2/g). In some embodiments, a furnish or a paper product can comprise at least 2 % SEPF by dry weight. In some embodiments, a paper product comprising SEPF can be formed from a furnish having a freeness of 650 ml Canadian Standard Freeness (CSF) or less, optionally 600 ml CSF or less.
    Type: Grant
    Filed: February 5, 2019
    Date of Patent: September 13, 2022
    Assignees: Domtar Paper Company LLC, Miami University
    Inventors: Harshad Pande, Douglas W. Coffin, Mona Alinejad
  • PAPER PRODUCTS AND PULPS WITH SURFACE ENHANCED PULP FIBERS AND INCREASED ABSORBENCY, AND METHODS OF MAKING SAME
    Publication number: 20190242062
    Abstract: This disclosure includes furnishes and paper products such as tissues comprising surface enhanced pulp fibers (“SEPF”) and related methods. In some embodiments, SEPF have a weighted average fiber length of at least 0.3 millimeters (mm) and an average hydrodynamic specific surface area of at least 10 square meters per gram (m2/g). In some embodiments, a furnish or a paper product can comprise at least 2% SEPF by dry weight. In some embodiments, a paper product comprising SEPF can be formed from a furnish having a freeness of 650 ml Canadian Standard Freeness (CSF) or less, optionally 600 ml CSF or less.
    Type: Application
    Filed: February 5, 2019
    Publication date: August 8, 2019
    Inventors: Pande HARSHAD, Douglas W. COFFIN, Mona ALINEJAD