Patents by Inventor Leandro Beaulardi

Leandro Beaulardi 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).

  • Patent number: 5151260
    Abstract: Disclosed is a process for preparing fine powders of aluminum nitride, by starting from an aqueous solution of an inorganic aluminum salt, characterized in that said process comprises the following steps:(a) the anion of the inorganic salt of aluminum is at least partially removed by heating, with a colloidal solution of an aluminum compound being obtained;(b) carbon powder is dispersed in said colloidal solution, with a suspension of an aluminum compound and carbon being obtained;(c) said suspension is mixed with a carbohydrate, with a suspension being obtained of an aluminum compound and carbon in a solution which contains the carbohydrate;(d) the suspension obtained from the (c) step is sprayed onto, or dropwise added to, an alkaline solution, with spherical bodies being obtained, which contain aluminum hydroxide and carbon;(e) said spherical bodies are carbothermally reduced and nitrided at a temperature comprised within the range of from 1350.degree. to 1650.degree. C.
    Type: Grant
    Filed: December 19, 1990
    Date of Patent: September 29, 1992
    Assignee: Temay S.p.A.
    Inventors: Luigi Contursi, Leandro Beaulardi