Patents by Inventor Gerard Folcher

Gerard Folcher 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 preparation of metal fluorides usable for the production of fluoride glasses
    Patent number: 4857294
    Abstract: A process for the preparation of metal fluorides usable for the production of fluoride glasses consists of reacting in an organic liquid medium, such as toluene, (a) a compound of said metal chosen from among the gaseous compounds thereof, the compounds of said metal soluble in the organic liquid medium and the compounds of said metal in solution in an organic solvent miscible with said medium, and (b) a fluorinating agent chosen from among the gaseous fluorinating agents, the fluorinating agents which are partly soluble in the organic medium and the fluorinating agents which are partly soluble in an organic solvent miscible with said medium, to form a fluoride of said metal, the organic liquid medium being such that it reacts neither with the compound of the metal, nor with the fluorinating agent and does not dissolve the fluoride formed. To prepare the zirconium tetrafluoride, it is possible to introduce in toluene, gaseous Zr(BH.sub.4).sub.
    Type: Grant
    Filed: July 22, 1987
    Date of Patent: August 15, 1989
    Assignee: Commissariat A L'Energie Atomique
    Inventors: Martine Bridenne Alaux, Hubert Marquet-Ellis, Nelly Keller, Gerard Folcher, deceased
  • Novel uranium compounds, their preparation process and their use as catalysts for the hydrogenation of unsaturated organic compounds
    Patent number: 4642337
    Abstract: Novel uranium compounds, their preparation process and their use as catalysts for the hydrogenation of unsaturated organic compounds.The uranium compounds are in accordance with formula: ##STR1## in which R.sup.1 represents an alkyl group, R.sup.2 an alkyl group, R.sup.3 an alkyl or aryl group, x is equal to 0 or is an integer between 1 and 5, m is equal to 1, 2 or 3, n is equal to 0, 1 or 2, p is equal to 1 or 2, provided m+n is equal to 3.They can be used as catalysts for the hydrogenation of organic compounds, such as olefins, preferably dissolved in an organic solvent, such as tetrahydrofuran.
    Type: Grant
    Filed: March 22, 1985
    Date of Patent: February 10, 1987
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Lucile Arnaudet, Gerard Folcher
  • Photogalvanic cell
    Patent number: 4391881
    Abstract: The photogalvanic cell is particularly intended for converting solar energy into electrical energy.The photogalvanic cell comprises two electrodes in a liquid system comprising a photosensitive constituent, which is formed by the uranyl ion UO.sub.2.sup.2+. The liquid system comprises a second constituent which is a cation and more particularly Ce.sup.3+. The second constituent can also be an anion and in particular NO.sub.3.sup.- or SCN.sup.-. One of the electrodes is of polished platinum and the other of a chemically inert conductive substance, particularly graphite.The photogalvanic cell can also be coupled to a photovoltaic cell.
    Type: Grant
    Filed: June 17, 1981
    Date of Patent: July 5, 1983
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Gerard Folcher, Jacques Paris