Patents by Inventor Sudip Chowdhury

Sudip Chowdhury 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).

  • Publication number: 20250034396
    Abstract: A wax-extender emulsion is described herein. In one aspect, the wax-extender emulsion includes a wax component. The wax component may be a petroleum-based wax, a bio-based wax, a synthetic wax or mixtures thereof. The wax-extender emulsion includes a dewatered, kraft lignin associated with the wax component and a pH modifier. The pH modifier a monofunctional amine, a multi-functional amine, an alkali metal salt, an alkaline earth metal salt, or combinations thereof. In one aspect, the emulsion comprises 20 wt % to 60 wt % wax component. During manufacturing, the dewatered, kraft lignin and the wax component may be emulsified and homogenized together to produce the wax-extender emulsion. The wax-extender emulsion can be co-applied as a mixture with adhesive resin during wood-based composite manufacturing.
    Type: Application
    Filed: October 8, 2024
    Publication date: January 30, 2025
    Applicant: The Willamette Valley Company LLC
    Inventors: Jesse L. Paris, Matthew G. Peterson, James A. Livings, Sudip Chowdhury, Curtis G. Burton
  • Publication number: 20240392132
    Abstract: A wax-extender emulsion including a plurality of wax-extender complex particles suspended in water is described. A wax-extender complex includes a wax component, an organic extender component and a surfactant that stabilizes the wax component and the organic extender component collectively to form the wax-extender complex. The wax-extender emulsion comprises from 2 wt % to 30 wt % organic extender. During manufacturing, the organic extender and wax component are emulsified and homogenized together to produce the wax-extender emulsion. The wax-extender emulsion can be co-applied as a mixture with adhesive resin during wood-based composite manufacturing.
    Type: Application
    Filed: August 2, 2024
    Publication date: November 28, 2024
    Applicant: The Willamette Valley Company LLC
    Inventors: Jesse L. Paris, Matthew G. Peterson, James A. Livings, Sudip Chowdhury, Curtis G. Burton
  • Patent number: 12152151
    Abstract: An adhesive mixture comprising an organic slurry dispersion for use in the manufacture of wood-based composites is described herein. The adhesive mixture includes an adhesive resin; water; one or more fillers, and an organic slurry dispersion. The organic slurry dispersion includes water; a natural biopolymer insoluble in the water, the natural biopolymer comprising lignocelluloses, lignocellulosic agricultural residue, lignin materials, lignin derivatives or mixtures thereof; and a defoamer. During manufacturing, the components of the organic slurry dispersion are combined and mixed by imparting a high degree of shear and mixing. The adhesive mixture may be applied to wood material for use in manufacturing a wood-based composite product.
    Type: Grant
    Filed: March 29, 2022
    Date of Patent: November 26, 2024
    Assignee: The Willamette Valley Company LLC
    Inventors: Jesse L. Paris, Sudip Chowdhury, Robert Joe Rubash, Kyleigh Danielle Rhodes
  • Patent number: 12054615
    Abstract: An organic slurry for use in wood-based composites is described herein. In one aspect, the organic slurry may include water, a lignin material insoluble in the water, such as dewatered kraft lignin, and a defoamer. During manufacturing, the water, lignin material and defoamer may be combined and mixed together in a vessel to produce the organic slurry. In one aspect, the defoamer may include a water-based defoamer, a silicone-based defoamer, a silicone-free defoamer, an oil-based defoamer, a polymer-based defoamer, or mixtures thereof. The organic slurry may have a pH less than neutral.
    Type: Grant
    Filed: August 30, 2023
    Date of Patent: August 6, 2024
    Assignee: The Williamette Valley Company LLC
    Inventors: Jesse L. Paris, Matthew G. Peterson, James A. Livings, Sudip Chowdhury, Curtis G. Burton
  • Publication number: 20230416530
    Abstract: A wax-extender emulsion including a plurality of wax-extender complex particles suspended in water is described. A wax-extender complex includes a wax component, an organic extender component and a surfactant that stabilizes the wax component and the organic extender component collectively to form the wax-extender complex. The wax-extender emulsion comprises from 2 wt % to 30 wt % organic extender. During manufacturing, the organic extender and wax component are emulsified and homogenized together to produce the wax-extender emulsion. The wax-extender emulsion can be co-applied as a mixture with adhesive resin during wood-based composite manufacturing.
    Type: Application
    Filed: August 30, 2023
    Publication date: December 28, 2023
    Applicant: The Williamette Valley Company LLC
    Inventors: Jesse L. Paris, Matthew G. Peterson, James A. Livings, Sudip Chowdhury, Curtis G. Burton
  • Publication number: 20230312929
    Abstract: An adhesive mixture comprising an organic slurry dispersion for use in the manufacture of wood-based composites is described herein. The adhesive mixture includes an adhesive resin; water; one or more fillers, and an organic slurry dispersion. The organic slurry dispersion includes water; a natural biopolymer insoluble in the water, the natural biopolymer comprising lignocelluloses, lignocellulosic agricultural residue, lignin materials, lignin derivatives or mixtures thereof; and a defoamer. During manufacturing, the components of the organic slurry dispersion are combined and mixed by imparting a high degree of shear and mixing. The adhesive mixture may be applied to wood material for use in manufacturing a wood-based composite product.
    Type: Application
    Filed: March 29, 2022
    Publication date: October 5, 2023
    Applicant: The Williamette Valley Company LLC
    Inventors: Jesse L. Paris, Sudip Chowdhury, Robert Joe Rubash, Kyleigh Danielle Rhodes
  • Patent number: 11591472
    Abstract: A wax-extender emulsion including a plurality of wax-extender complex particles suspended in water is described. A wax-extender complex includes a wax component, an organic extender component and a surfactant that stabilizes the wax component and the organic extender component collectively to form the wax-extender complex. The wax-extender emulsion comprises from 2 wt % to 30 wt % organic extender. During manufacturing, the organic extender and wax component are emulsified and homogenized together to produce the wax-extender emulsion. The wax-extender emulsion can be co-applied as a mixture with adhesive resin during wood-based composite manufacturing.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: February 28, 2023
    Assignee: The Williamette Valley Company LLC
    Inventors: Jesse L. Paris, Matthew G. Peterson, James A. Livings, Sudip Chowdhury, Curtis G. Burton
  • Publication number: 20190382582
    Abstract: A wax-extender emulsion including a plurality of wax-extender complex particles suspended in water is described. A wax-extender complex includes a wax component, an organic extender component and a surfactant that stabilizes the wax component and the organic extender component collectively to form the wax-extender complex. The wax-extender emulsion comprises from 2 wt % to 30 wt % organic extender. During manufacturing, the organic extender and wax component are emulsified and homogenized together to produce the wax-extender emulsion. The wax-extender emulsion can be co-applied as a mixture with adhesive resin during wood-based composite manufacturing.
    Type: Application
    Filed: November 29, 2017
    Publication date: December 19, 2019
    Inventors: Jesse L. Paris, Mathew G. Peterson, James A. Livings, Sudip Chowdhury, Curtis G. Burton
  • Patent number: 9920228
    Abstract: The disclosed composite wood particulate products, adhesives contained in such wood particulate products, and methods of making the adhesive and the wood particulate products employ an aldehyde-free adhesive, and more specifically a formaldehyde-free adhesive. The aldehyde-free adhesive includes an inert additive that extends a resin, such as an isocyanate resin, and forms an evenly dispersed, less expensive polymeric adhesive admixture. The extender-filler of the resin is mixed with water to form a slurry. The slurry can then be mixed with a resin, like the isocyanate resin, to form the adhesive. Various rheology modifiers can be added, if desired, to the extender-filler or the slurry. The adhesive can be blended with wood particles to form a mat that is then pressed into a composite wood particulate product.
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: March 20, 2018
    Assignee: The Willamette Valley Company LLC
    Inventors: Philip N. Cote, Omar Tiba, Wallace K. Rowland, Robert J. Rubash, Randall C. Zenke, Sudip Chowdhury
  • Publication number: 20170183549
    Abstract: The disclosed composite wood particulate products, adhesives contained in such wood particulate products, and methods of making the adhesive and the wood particulate products employ an aldehyde-free adhesive, and more specifically a formaldehyde-free adhesive. The aldehyde-free adhesive includes an inert additive that extends a resin, such as an isocyanate resin, and forms an evenly dispersed, less expensive polymeric adhesive admixture. The extender-filler of the resin is mixed with water to form a slurry. The slurry can then be mixed with a resin, like the isocyanate resin, to form the adhesive. Various rheology modifiers can be added, if desired, to the extender-filler or the slurry. The adhesive can be blended with wood particles to form a mat that is then pressed into a composite wood particulate product.
    Type: Application
    Filed: March 17, 2017
    Publication date: June 29, 2017
    Inventors: Philip N. Cote, Omar Tiba, Wallace K. Rowland, Robert J. Rubash, Randall C. Zenke, Sudip Chowdhury
  • Patent number: 9631058
    Abstract: The disclosed composite wood particulate products, adhesives contained in such wood particulate products, and methods of making the adhesive and the wood particulate products employ an aldehyde-free adhesive, and more specifically a formaldehyde-free adhesive. The aldehyde-free adhesive includes an inert additive that extends a resin, such as an isocyanate resin, and forms an evenly dispersed, less expensive polymeric adhesive admixture. The extender-filler of the resin is mixed with water to form a slurry. The slurry can then be mixed with a resin, like the isocyanate resin, to form the adhesive. Various rheology modifiers can be added, if desired, to the extender-filler or the slurry. The adhesive can be blended with wood particles to form a mat that is then pressed into a composite wood particulate product.
    Type: Grant
    Filed: September 3, 2014
    Date of Patent: April 25, 2017
    Assignee: The Willamette Valley Company
    Inventors: Philip N. Cote, Omar Tiba, Wallace K. Rowland, Robert J. Rubash, Randall C. Zenke, Sudip Chowdhury
  • Publication number: 20150061177
    Abstract: The disclosed composite wood particulate products, adhesives contained in such wood particulate products, and methods of making the adhesive and the wood particulate products employ an aldehyde-free adhesive, and more specifically a formaldehyde-free adhesive. The aldehyde-free adhesive includes an inert additive that extends a resin, such as an isocyanate resin, and forms an evenly dispersed, less expensive polymeric adhesive admixture. The extender-filler of the resin is mixed with water to form a slurry. The slurry can then be mixed with a resin, like the isocyanate resin, to form the adhesive. Various rheology modifiers can be added, if desired, to the extender-filler or the slurry. The adhesive can be blended with wood particles to form a mat that is then pressed into a composite wood particulate product.
    Type: Application
    Filed: September 3, 2014
    Publication date: March 5, 2015
    Inventors: Philip N. Cote, Omar Tiba, Wallace K. Rowland, Robert J. Rubash, Randall C. Zenke, Sudip Chowdhury