Patents by Inventor Zagarias Hendrik Johannes Pretorius

Zagarias Hendrik Johannes Pretorius 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: 6127022
    Abstract: A camouflage surface for concealment from, and deception of, a herbivorous animal comprises a camouflage pattern made up of at least two different types of regions which reflect electromagnetic radiation in the near-infra-red range of the electromagnetic spectrum. All the regions of each type reflect the near-infra-red radiation in the same fashion as one another and in a fashion different from the fashion in which the regions of each other type reflect the radiation. The different types of regions all have, in the near-infra-red range, spectral reflectance curves having reflectance maxima at wavelengths of at least 680 nm. Each spectral reflectance curve which the surface has in the visible light range of the electromagnetic spectrum is without a reflectance maximum in the wavelength range between 480 and 680 nm and each spectral reflectance curve which the surface has in the visible light range has a reflectance maximum at a wavelength of at most 480 nm.
    Type: Grant
    Filed: December 21, 1998
    Date of Patent: October 3, 2000
    Assignee: Finstruct (Proprietary) Limited
    Inventor: Zagarias Hendrik Johannes Pretorius
  • Patent number: D409840
    Type: Grant
    Filed: March 19, 1997
    Date of Patent: May 18, 1999
    Assignee: Finstruct (Proprietary) Limited
    Inventor: Zagarias Hendrik Johannes Pretorius