Patents by Inventor Paul Jourdan

Paul Jourdan 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 and an installation for the air-conditioning of greenhouses and frames
    Patent number: 4215672
    Abstract: Solar radiations having longer wavelengths than those which are useful for plant development are selectively absorbed by an optical filter formed by two transparent walls which constitute at least part of the roofing structure of a greenhouse or "lean-to" frame and by a heat-transporting fluid which is circulated between the walls in a closed-circuit system. The heat absorbed is removed and stored in a separate reservoir, then recovered at night by pumping and circulating the fluid so as to maintain a predetermined minimum temperature within the greenhouse.
    Type: Grant
    Filed: December 14, 1977
    Date of Patent: August 5, 1980
    Assignees: Commissariat a l'Energie Atomique, Institut National de la Recherche Agronomique
    Inventors: Jean-Pierre J. Chiapale, Jacques A. Damagnez, Pierre M. Denis, Paul Jourdan
  • Method and an installation for the air-conditioning of greenhouses and frames
    Patent number: 4108373
    Abstract: Solar radiations having longer wavelengths than those which are useful for plant development are selectively absorbed by an optical filter formed by two transparent walls which constitute at least part of the roofing structure of a greenhouse or "lean-to" frame and by a heat-transporting fluid which is circulated between the walls in a closed-circuit system. The heat absorbed is removed and stored in a separate reservoir, then recovered at night by pumping and circulating the fluid so as to maintain a predetermined minimum temperature within the greenhouse.
    Type: Grant
    Filed: May 14, 1975
    Date of Patent: August 22, 1978
    Assignees: Commissariat a l'Energie Atomique, Institut National de la Recherche Agronomique
    Inventors: Jean-Pierre J. Chiapale, Jacques A. Damagnez, Pierre M. Denis, Paul Jourdan
  • Method for producing carbon disulfide
    Patent number: 3978198
    Abstract: A method for producing carbon disulfide by sulfurization of sulfur-containing organic compounds is described. Conventional apparatus may be employed with realization of reactant conversion rates approaching 100%, and production of undesirable by-products is insignificant.
    Type: Grant
    Filed: April 8, 1975
    Date of Patent: August 31, 1976
    Assignee: Rhone-Poulenc Industries
    Inventors: Bernard Buathier, Andre Combes, Jean-Paul Jourdan