Patents by Inventor David G. Marsh

David G. Marsh 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).

  • Patent number: 5432000
    Abstract: A fiber product comprises dry discontinuous fibers having a starch binder on at least a portion of the fiber surfaces, at least about seventy percent of the starch binder coated fibers being unbonded to one another, solid particles are adhered to the fibers by the binder without the binder entirely coating the particles. The fibers may be air laid into a web or formed into an absorbent structure. Superabsorbent particles are a specific example of the particles which may be adhered to the fibers.
    Type: Grant
    Filed: March 22, 1991
    Date of Patent: July 11, 1995
    Assignee: Weyerhaeuser Company
    Inventors: Richard H. Young, Sr., Amar N. Neogi, Michael R. Hansen, Kevin T. Hodgson, Donald D. Halabisky, David G. Marsh, Christel Brunnenkant, David W. Park, Paul G. Gaddis, William C. Johnston, Jr.
  • Patent number: 4234569
    Abstract: This invention relates to a method of production of formaldehyde, and lower saturated aliphatic dialdehyde-treated allergens suitable for the immunotherapy (desensitization) of individuals suffering from allergies of the immediate type in a plurality of steps wherein said formaldehyde and/or said dialdehyde is utilized alone or in combination for the modification of allergen-containing materials. These lower saturated aliphatic mono- and dialdehyde treated allergen-containing materials are useful in ameliorating the symptoms of allergic (atopic) people. Also, they are able to induce formation of blocking antibody in mammals which cross-reacts with the native allergen-containing materials. Reactions with formaldehyde are carried out in a non-phenolic environment in a plurality of steps. The reaction involving combinations of aldehydes can be carried out in a single step.
    Type: Grant
    Filed: October 4, 1978
    Date of Patent: November 18, 1980
    Assignee: The Johns Hopkins University
    Inventor: David G. Marsh
  • Patent number: 4226853
    Abstract: This invention relates to the production of formaldehyde treated allergens suitable for the immunotherapy (desensitization) of individuals suffering from allergies of the immediate type. These formalinized allergen-containing materials are also useful to induce formation of antibody in mammals which cross reacts with the native allergen-containing materials.
    Type: Grant
    Filed: February 18, 1975
    Date of Patent: October 7, 1980
    Inventor: David G. Marsh