Patents by Inventor Adrianus P. De Jong

Adrianus P. De Jong 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: 5603130
    Abstract: Sanitary seat on which the disabled or the elderly can sit to wash--or have washed--parts of their lower body. The seat (61) comprises two parts, an inner part (64) and an annular part (62), which can be moved relative to each other in the vertical direction. When the inner part (64), is projecting above the annular part (62), the part of the lower body projecting outside the inner part can be washed. When the inner part (64), is below the annular part (62), the particular person is sitting on the annular part (62). In that situation the other part on which the person was first seated can be washed. The inner part (64) is preferably provided with a spray head, and the inner part (64) with a downward projecting part of the annular part (62) preferably forms a watertight seal for forming a space which can be filled with water in which the lower body can be cleansed.
    Type: Grant
    Filed: April 22, 1993
    Date of Patent: February 18, 1997
    Assignee: B.V. Optische Industrie De Oude Delft
    Inventors: Christiaan J. Snijders, Alphonsus M. L. D. Hoenderdos, Willem G. L. de Jong, Adrianus P. de Jong
  • Patent number: 5352681
    Abstract: The light, oxidation and storage stability of aqueous 5-ASA suspensions is increased by incorporating in such suspensions an effective amount of titanium dioxide. The resulting stabilized aqueous suspensions are suitable for enema preparations.
    Type: Grant
    Filed: December 7, 1993
    Date of Patent: October 4, 1994
    Assignee: BYK Nederland BV
    Inventors: Adrianus Wittebrood, Adrianus P. De Jong, Jan Bron