Patents by Inventor David Prince Heaner

David Prince Heaner 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: 6767521
    Abstract: A system for dehumidifying and deodorizing, the system comprising a hanging, dehumidifying and deodorizing pouch comprising a housing having a impermeable membrane and a semi-permeable securely attached to the impermeable membrane. The housing enclosing moisture-absorbent material and deodorizing material. The housing is enclosed within a jacket comprising a perforated contiguous wall; the wall defines an opening for receiving the housing. The jacket further comprises a closing member for closing the opening when the housing is within the jacket. The jacket can comprise a rigid, rectangular cage having a detachable lid. The semi-permeable membrane of the housing can comprise polyethylene or expanded polytetrafluoroethylene, individually or a combination thereof. The impermeable can comprise either polyethylene film or polypropylene film. The moisture-absorbent material can comprise a hygroscopic, deliquescent or a combination of a hygroscopic deliquescent and a gel forming polymer.
    Type: Grant
    Filed: May 12, 2000
    Date of Patent: July 27, 2004
    Assignee: W.M. Barr & Company
    Inventors: Fred K. Vogt, Surendra Kumar Mishra, David Prince Heaner
  • Patent number: 5907908
    Abstract: A dehumidifying pouch comprising a container having a moisture-absorption compartment and a collection compartment, the moisture-absorption compartment comprising semi-permeable material that encloses a deliquescent desiccant material and an optional deodorizing material. The collection compartment comprises walls made of a moisture impervious material. The collection compartment is connected to the moisture-absorption compartment, preferably by a broken seal, so that liquids from the moisture-absorption compartment can be transferred to the collection compartment of the pouch. The semi-permeable material can comprise polyethylene or expanded polytetrafluoroethylene, individually or a combination thereof. The moisture impervious compartment can comprise either polyethylene film or polypropylene film. Alternatively, the dehumidifying pouch is comprised of one compartment having a moisture-absorption section and a moisture collection section.
    Type: Grant
    Filed: October 1, 1997
    Date of Patent: June 1, 1999
    Assignee: Tetra Technologies, Inc.
    Inventors: Joaquin Paz Cunanan, David Prince Heaner, David J. Hanlon