Patents by Inventor Frederick D. Osterholtz

Frederick D. Osterholtz 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).

  • Disposable absorbent articles containing particulate, free-flowing, insoluble swellable polymers
    Patent number: 4058124
    Abstract: Particulate, free-flowing, insoluble swellable polymers are provided which are comprised of a mixture of an insoluble, swellable hydrogel and inert filler. The mixtures are free-flowing powders or granules which can absorb many times their weight of water and hence are useful as a soil amendment.
    Type: Grant
    Filed: March 28, 1975
    Date of Patent: November 15, 1977
    Assignee: Union Carbide Corporation
    Inventors: Steven N. Yen, Frederick D. Osterholtz