Patents by Inventor Van Delk

Van Delk 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).

  • Viscoelastic foam
    Patent number: 11401366
    Abstract: Recovery time and/or airflow of flexible polyurethane foam is increased by including certain tackifiers in the foam formulation. The tackifiers are characterized in being incompatible with polyol or polyol mixture used to make the foam, having a viscosity of at least 10,000 centipoise at 25° C., having a glass transition temperature of at most 15° C. and being inert to other components of the foam formulation.
    Type: Grant
    Filed: March 8, 2019
    Date of Patent: August 2, 2022
    Assignee: Dow Global Technologies LLC
    Inventors: Qinghao Meng, Christopher Thiede, Kaoru Aou, Van Delk, Jillian Charon, Doug Todd, Scott Snyder
  • Process making polymer polyol having monodisperse dispersed polymer particles
    Patent number: 10975215
    Abstract: Polymer polyols are made in a seeded process, in which styrene and acrylonitrile are polymerized in the presence of a base polyol, a seed dispersion and a solvent. The seed dispersion contains an unsaturated macromer. The process produces a polymer polyol in which the dispersed phase particles have a particle size of 1 to 3 ?m and a particle size span of less than 1.25. The polymer polyols are very useful for making flexible polyurethane foam for cushioning applications, in which high airflows and good load bearing are needed.
    Type: Grant
    Filed: March 21, 2017
    Date of Patent: April 13, 2021
    Assignee: Dow Global Technologies LLC
    Inventors: Sven Claessens, Antoon De Smet, Gerard Pel, Dale Hunter, Van Delk, Jr.
  • VISCOELASTIC FOAM
    Publication number: 20210002411
    Abstract: Recovery time and/or airflow of flexible polyurethane foam is increased by including certain tackifiers in the foam formulation. The tackifiers are characterized in being incompatible with polyol or polyol mixture used to make the foam, having a viscosity of at least 10,000 centipoise at 25° C., having a glass transition temperature of at most 15° C. and being inert to other components of the foam formulation.
    Type: Application
    Filed: March 8, 2019
    Publication date: January 7, 2021
    Inventors: Qinghao Meng, Christopher Thiede, Kaoru Aou, Van Delk, Jillian Charon, Doug Todd, Scott Snyder
  • PROCESS MAKING POLYMER POLYOL HAVING MONODISPERSE DISPERSED POLYMER PARTICLES
    Publication number: 20200299479
    Abstract: Polymer polyols are made in a seeded process, in which styrene and acrylonitrile are polymerized in the presence of a base polyol, a seed dispersion and a solvent. The seed dispersion contains an unsaturated macromer. The process produces a polymer polyol in which the dispersed phase particles have a particle size of 1 to 3 ?m and a particle size span of less than 1.25. The polymer polyols are very useful for making flexible polyurethane foam for cushioning applications, in which high airflows and good load bearing are needed.
    Type: Application
    Filed: March 21, 2017
    Publication date: September 24, 2020
    Inventors: Sven Claessens, Antoon De Smet, Gerard Pel, Dale Hunter, Van Delk, Jr.