Patents by Inventor Mark A. Lemere

Mark A. Lemere 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).

  • Modified cellulose-based natural binder for nonwoven fabrics
    Patent number: 12168842
    Abstract: Aqueous cellulosic binder comprising modified cellulose (carboxymethylcellulose and/or sodium carboxymethylcellulose), water, and optionally binder modifier (crosslinking agent and/or wet strength agent); with a weight ratio of water modified cellulose of 99.9:0.1 to 1,000:500, with a weight ratio of binder modifier:modified cellulose of 1:2 to 1:1,000; wherein crosslinking agent comprises carboxylic acid having two or more carboxyl groups; and wherein wet strength agent comprises a reactive functional group (halide, chloride, fluoride, hydroxyl). A method of making aqueous cellulosic binder comprising contacting modified cellulose with water to form modified cellulose solution; and optionally contacting modified cellulose solution with binder modifier to form aqueous cellulosic binder. A nonwoven fabric comprising fiber web (85-99.9 wt. %); and cured cellulosic binder (0.1-15 wt. %). An article formed from the nonwoven fabric.
    Type: Grant
    Filed: January 31, 2019
    Date of Patent: December 17, 2024
    Assignee: Glatfelter Corporation
    Inventors: Abdus Salam, Timothy Kistemaker, Kirk Stallsmith, Mark A. Lemere
  • Modified Cellulose-Based Natural Binder for Nonwoven Fabrics
    Publication number: 20210054548
    Abstract: Aqueous cellulosic binder comprising modified cellulose (carboxymethylcellulose and/or sodium carboxymethylcellulose), water, and optionally binder modifier (crosslinking agent and/or wet strength agent); with a weight ratio of water modified cellulose of 99.9:0.1 to 1,000:500, with a weight ratio of binder modifier:modified cellulose of 1:2 to 1:1,000; wherein crosslinking agent comprises carboxylic acid having two or more carboxyl groups; and wherein wet strength agent comprises a reactive functional group (halide, chloride, fluoride, hydroxyl). A method of making aqueous cellulosic binder comprising contacting modified cellulose with water to form modified cellulose solution; and optionally contacting modified cellulose solution with binder modifier to form aqueous cellulosic binder. A nonwoven fabric comprising fiber web (85-99.9 wt. %); and cured cellulosic binder (0.1-15 wt. %). An article formed from the nonwoven fabric.
    Type: Application
    Filed: January 31, 2019
    Publication date: February 25, 2021
    Inventors: Abdus Salam, Timothy Kistemaker, Kirk Stallsmith, Mark A. Lemere