Patents by Inventor Hendrikus Gerardus Petrus Van Doormalen

Hendrikus Gerardus Petrus Van Doormalen 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).

  • Method of manufacturing a mould for producing an optical surface, a method of producing a contact lens and a device for use with these methods
    Publication number: 20070103639
    Abstract: A method of manufacturing a mould for producing a customized optical surface, whereby a mould (1, 2) having a base shape is modified in order to obtain the required shape of the mould. The modificaiton is carried out by means of a lithographic process comprising coating the mould surface with a photoresist layer (16), exposing the layer to a predetermined pattern of exposure radiation (9) and developing the exposed layer whereby portions of the layer are removed to obtain the required mould shape (22). This method may be used for producing small quantities of optical surfaces, such as for individual contact lenses.
    Type: Application
    Filed: July 6, 2004
    Publication date: May 10, 2007
    Inventors: Antonius Nellissen, Hendrikus Gerardus Petrus Van Doormalen, Theodorus Van Der Putten