Patents by Inventor Henry C. Ramsey

Henry C. Ramsey 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).

  • Method of preparing cellulosic fibers having increased absorbency
    Patent number: 4919681
    Abstract: A method of increasing the absorbency of cellulosic fibers by treating the cellulosic fibers with an aqueous acid solution having a pH value of no more than 4. The treatment is carried out for a time sufficient to obtain the desired absorbency. Optionally, the aqueous acidic solution treatment can be preceded or succeeded by a hot water treatment to further increase the absorbency of the cellulosic fibers. The cellulosic fibers find particular application in nonwoven articles that require high absorbency, i.e., diapers, tampons, medical sponges, etc.
    Type: Grant
    Filed: February 16, 1988
    Date of Patent: April 24, 1990
    Assignee: BASF Corporation
    Inventors: Robert A. Tyler, Henry C. Ramsey, Robert N. Armstrong