Patents by Inventor Philippe E. Gravisse

Philippe E. Gravisse 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 and screen for disturbing the transmission of electromagnetic radiation particularly infra-red radiation
    Patent number: 5078462
    Abstract: Process for disturbing the transmission of electromagnetic radiation emitted by a source within a predetermined wavelength band, for reception by a receiver designed to detect signals situated in said band, characterized by a screen (3) placed between said source (1) and said receiver (4), which absorbs at least part of the radiation emitted on said wavelength band and re-emits it on wavelengths outside said band. Furthermore, a screen for implementing this process.
    Type: Grant
    Filed: August 9, 1990
    Date of Patent: January 7, 1992
    Inventor: Philippe E. Gravisse
  • Photoluminescent textile materials
    Patent number: 4211813
    Abstract: Sheet materials are provided which are photoluminescent by virtue of their coating.These sheet materials comprise a textile or other flexible sheet material substrate to which adheres a coating layer consisting of one or more synthetic resins admixed with a photoluminescent complex, the latter comprising (a) a phosphorescent metal sulphide such as zinc, calcium, cadmium or strontium sulphide and (b) a first substance which absorbs energy of short wavelength and emits it within the absorption spectrum of the said sulphide and with or without (c) a second substance which is fluorescent and which imparts to the said sheet materials a daytime coloration different from their nighttime coloration.The sheet materials may be textile sheet materials useful for the production of garments, in particular safety garments and furnishing fabrics. Self-adhesive materials may also be produced.
    Type: Grant
    Filed: March 20, 1978
    Date of Patent: July 8, 1980
    Assignees: B.R.I.C. (Burea de Recherche pour l'Innovation et la Convervence, N.V. Anciens Etablissements Alsberge et Van Oost
    Inventors: Philippe E. Gravisse, Jacques F. Van Schoote
  • Photoluminescent materials and method of manufacturing same
    Patent number: 4208300
    Abstract: The present invention has for its object to eliminate the expense of the installation and maintenance of a continuous lighting system for roadways, staircases, doorways and the like by using the light remanence obtained from a photo-luminescent material covering the obstacles or structures to be lighted. The invention provides a material having permanent physical, mechanical and chemical properties which cannot be changed by rubbing or wear; in the textile field, the material may constitute the fabric fibres or a standard fabric can be coated with the material. The material products are photo-luminsecent in their mass and are of the type comprising a synthetic binding agent having a spectral response from the U.V. to close to the I.R.
    Type: Grant
    Filed: June 30, 1977
    Date of Patent: June 17, 1980
    Inventor: Philippe E. Gravisse