Patents by Inventor Johannes M. Oomen

Johannes M. Oomen 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).

  • Optical transmissive component with anti-reflection gratings
    Patent number: 5694247
    Abstract: An optical transmissive component (1) is described, which component has an entrance surface (4) and an exit surface (5) for optical radiation (20), in which one of the surfaces (4; 5) is provided with an anti-reflection grating (10; 15). By providing a second surface, (5; 4) with a second anti-reflection grating and by ensuring that the grating strips (11) of the first grating (10) extend essentially perpendicularly to those (16) of the second grating (15) in corresponding areas of the first and the second surface (4; 5), it is prevented that the component is birefringent.
    Type: Grant
    Filed: May 1, 1995
    Date of Patent: December 2, 1997
    Assignee: U.S. Philips Corporation
    Inventors: Willem G. Ophey, Johannes J. Baalbergen, Johannes M. Oomen, Petrus G. J. M. Nuyens
  • Diamond tool
    Patent number: 5078551
    Abstract: A diamond tool 1 comprising a tool tip 5 of boron-containing single-crystal diamond.
    Type: Grant
    Filed: September 11, 1990
    Date of Patent: January 7, 1992
    Assignee: U.S. Philips Corporation
    Inventor: Johannes M. Oomen
  • Method of producing objects with a supersmooth aluminum surface
    Patent number: 4257854
    Abstract: Method of producing objects having an aluminum surface of a supersmooth quality by applying an aluminum layer which is at least 10 micron thick onto the surface of the object from an electroplating bath and by thereafter subjecting the object to a mechanical machining precision operation. The aluminum layer is preferably electroplated by means of an anhydrous bath with an aprotic solvent.
    Type: Grant
    Filed: November 19, 1979
    Date of Patent: March 24, 1981
    Assignee: U.S. Philips Corporation
    Inventors: Theo E. G. Daenen, Johannes M. Oomen, Joseph F. M. Van de Berg