Patents by Inventor Grietje Wijbenga

Grietje Wijbenga 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: 6536157
    Abstract: A portable, minature greenhouse. The greenhouse is modular, having vertically stackable sections. The base section has a floor, wheels, and insulated upright walls having reflective interior surfaces. Subsequent sections have transparent walls. Optionally, at least one wall is slidably mounted to the greenhouse. An opaque, insulated lid covers the top section. The lid has openings enabling passage of air. The base and subsequent sections have slots formed in their walls for receiving slats placed therein in spaced apart relation. The slats form shelves of selectively variable width. The greenhouse has at least one light and reflective hood mounted in the lid, a timer disposed to control the light, a water supply conduit, forced air ventilation, an air filter which in alternative embodiments has an activated carbon element or a HEPA element, and an air ionizer.
    Type: Grant
    Filed: December 18, 2000
    Date of Patent: March 25, 2003
    Inventor: Grietje Wijbenga
  • Publication number: 20020073613
    Abstract: A portable, minature greenhouse. The greenhouse is modular, having vertically stackable sections. The base section has a floor, wheels, and insulated upright walls having reflective interior surfaces. Subsequent sections have transparent walls. Optionally, at least one wall is slidably mounted to the greenhouse. An opaque, insulated lid covers the top section. The lid has openings enabling passage of air. The base and subsequent sections have slots formed in their walls for receiving slats placed therein in spaced apart relation. The slats form shelves of selectively variable width. The greenhouse has at least one light and reflective hood mounted in the lid, a timer disposed to control the light, a water supply conduit, forced air ventilation, an air filter which in alternative embodiments has an activated carbon element or a HEPA element, and an air ionizer.
    Type: Application
    Filed: December 18, 2000
    Publication date: June 20, 2002
    Inventor: Grietje Wijbenga