Patents by Inventor Jacques Le Moigne

Jacques Le Moigne 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 for forming coated monocrystalline products
    Patent number: 5180463
    Abstract: A polydiacetylene coating layer deposited upon an organic microcrystal. The coating has a large, uniform surface area which is monoriented and without cracks. The preferred embodiment utilizes for the monomer a layer of [1,6-di- n(carbazolyl)-2,4-hexadiyne] deposited by epitaxy onto an acid orthophthalate monocrystal of an alkali metal, ammonium or thallium. The process of the invention comprises cleaving the acid orthophthalate monocrystal along its (001) plane; depositing a diacetylenic monomer onto the cleaved face of the crystal by heat evaporation under vacuum conditions, and polymerizing the monomer upon the crystal face. The coated layer may thereafter be removed from the crystalline substrate by applying a composition such as, e.g., cabon or an acrylic polymer onto the coating to form a backing therefore and separating the resultant monoriented film from the crystal by at least partially immersing the coated crystal in water.
    Type: Grant
    Filed: December 21, 1989
    Date of Patent: January 19, 1993
    Assignee: Quartz et Silice
    Inventors: Jacques Le Moigne, Annette Thierry, Pierre Guerder
  • Temperature indicators based on polydiacetylene compounds
    Patent number: 5085801
    Abstract: At least one polydiacetylene compound is suitable for detecting whether an article has ever exceeded a selected temperature. The polydiacetylene compound is deposited on a substrate or mixed with a thermoplastic material. The polydiacetylene compound instantaneously and irreversibly changes from blue to red at the threshold temperature.
    Type: Grant
    Filed: June 19, 1991
    Date of Patent: February 4, 1992
    Assignee: Centre National de la Recherche Scientifique
    Inventors: Annette Thierry, Jacques Le Moigne
  • Oxygen gauge the working electrode of which is composed of a macrocyclic pyrolic compound
    Patent number: 4526674
    Abstract: Oxygen gauges in which the working electrode is composed of a macrocyclic pyrolic compound.These gauges are intended to be used for the measurement of oxygen concentration in a gaseous medium.Application for the measurement of oxygen partial pressure at low temperatures.
    Type: Grant
    Filed: August 1, 1984
    Date of Patent: July 2, 1985
    Assignee: Societe Nationale Elf Aquitaine
    Inventors: Mireille Fouletier, Elisabeth Siebert, Jacques Le Moigne