Patents by Inventor El Hadj Jabry

El Hadj Jabry 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).

  • Compositions of transition metal manganites in the form of particles or ceramics, their preparation and their use in the production of thermistors
    Patent number: 4840925
    Abstract: A manganite type composition of the formulaMn.sub.3-x-y-z Ni.sub.x Co.sub.y M.sub.z O.sub.4 (I)wherein M is at least one metal selected from Cu, Zn and Cd, y and z range from 0 to 1, and (x+y+z) is lower than 2. This composition can also contain a doping agent. The composition is either a particulate composition wherein at least 90% of the particles have a regular form and a size lower than 5 .mu.M or a ceramic material having a density greater than 94% of the theoretical density. The composition is useful in the production of thermistors.
    Type: Grant
    Filed: June 4, 1986
    Date of Patent: June 20, 1989
    Assignee: Universite Paul Sabatier (Toulouse III)
    Inventors: Abel C. Rousset, Guy Boissier, El Hadj Jabry, Jean-Pierre Caffin