Patents by Inventor Gjalt M. Gaikema

Gjalt M. Gaikema 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).

  • Process for the packaging of products, using a heat treatment, and closed container with packed products, obtained using a heat treatment
    Patent number: 4689936
    Abstract: A container or package filled with perishable food materials is closed by a cover presenting a vent hole and the assembly is subjected to sterilization or pasteurization. Thereafter the vent hole is closed by means of a hot melt having a melting point lower than the highest temperature during sterilization or pasteurization. Preferably the hot melt is applied before sterilization or pasteurization and provided with a perforation joining the vent hole. The hot melt may contain a rounded rigid body not melting at the highest sterilization or pasteurization temperature and being able to seal the vent hole, such as a glass bead.After cooling the closed container is under a subatmospheric pressure.The container may be of plastics or glass and the cover may be of plastics or plastic coated metal foil, in such a case the plastic coating has a melting point being higher than the melting point of the hot melt.
    Type: Grant
    Filed: August 6, 1986
    Date of Patent: September 1, 1987
    Assignee: Wavin B.V.
    Inventors: Gjalt M. Gaikema, Dirk Zylstra