Patents by Inventor Yvon G. Levesque

Yvon G. Levesque 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).

  • Layered absorbent structure
    Patent number: 4226237
    Abstract: A product is provided for absorbing body fluid that has the property of retaining a greater proportion of absorbent fluid in an interior layer. The product includes an absorbent element having a plurality of absorbent layers including a first layer comprising of cellulose fibers. Adjacent to the first layer is a second layer comprising, in admixture, peat moss and finely ground mechanical wood pulp, the mechanical wood pulp being present in a ratio of at least 0.35 grams per gram of peat moss.
    Type: Grant
    Filed: January 30, 1979
    Date of Patent: October 7, 1980
    Assignee: Johnson & Johnson
    Inventor: Yvon G. Levesque
  • Absorbent structure
    Patent number: 4215692
    Abstract: An absorbent structure is provided comprising peat moss in combination with mechanical wood pulp, said wood pulp having a Canadian Standard Freeness of from about 30-600 and present in the ratios, by weight of wood pulp to peat moss, of greater than about 0.35. The absorbent structure, which may also contain other absorbent materials such as long-fibered chemical wood pulp, rayon or the like, exhibits improved absorbent properties in both liquid-holding capacity and liquid-retention capacity and maintains its structural integrity.
    Type: Grant
    Filed: January 30, 1979
    Date of Patent: August 5, 1980
    Assignee: Johnson & Johnson
    Inventor: Yvon G. Levesque