Patents by Inventor Giordano Donelli

Giordano Donelli 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 making paper and cardboard
    Patent number: 5750006
    Abstract: Process for making paper and cardboard, wherein at least one nitrate or basic nitrate of a trivalent metal is used as sizing agent, so that the process wastewater, after a biological denitrification treatment, can be discharged into the environment without causing pollution problems and/or can be reused at least partially as fresh water, with great savings in consumption.
    Type: Grant
    Filed: June 18, 1996
    Date of Patent: May 12, 1998
    Assignee: Industrie Chimiche Caffaro, S.p.A.
    Inventors: Giordano Donelli, Massimiliano Rosellini, Raffaella Taliento, Fausto Dore'
  • Taped purification process
    Patent number: 5206436
    Abstract: Process for purifying, by crystallization, TAED having a titer.gtoreq.99.5% from a mixture containing crude TAED obtained by acetylation of DAED, wherein the purification process is performed in two different stages (1, 2), characterized in that the temperatures at which the stages are performed differ from one another (delta t) by values comprised between 55.degree. and 110.degree..
    Type: Grant
    Filed: July 22, 1991
    Date of Patent: April 27, 1993
    Assignee: Caffaro S.p.A.
    Inventors: Enrico Pontoglio, Giordano Donelli, Sandro Parodi
  • Process for preparing basic aluminum compounds
    Patent number: 5120522
    Abstract: The present invention relates to a process for preparing basic aluminum compounds having the general formula (1)[Al.sub.2 (OH).sub.x Cl.sub.y (SO.sub.4).sub.z ].sub.n (1)where:n is at least equal to 1x=2-4.0y=2.0-3.40z=0-0.30andx+y+z=6by means of a reaction of alumina with hydrochloric acid, possibly mixed with sulfuric acid. The alumina is caused to react in alumina/acid(s) stoichiometric conditions to obtain the compounds of formula (1). The reaction is carried out by milling alumina in liquid phase under heavy stirring.
    Type: Grant
    Filed: September 18, 1990
    Date of Patent: June 9, 1992
    Assignee: Caffaro S.p.A.
    Inventors: Fausto Dore, Giordano Donelli
  • Process for the continuous production of isophthalodinitrile
    Patent number: 4806672
    Abstract: The present invention relates to a process for the continuous production of isophthalodinitrile by amidation and simultaneous dehydration of the dimethyl ester of isophthalic acid in vapor phase on the fixed bed of a dehydration catalyst.
    Type: Grant
    Filed: January 26, 1988
    Date of Patent: February 21, 1989
    Assignee: Caffaro S.p.A. Societa Per l'Industria Chimica ed Electtrochimica
    Inventors: Enrico Pontoglio, Sandro Parodi, Giordano Donelli, Giancarlo Caretti
  • Process for the continuous production of tetrachlorophthalo-nitrile in two reactors in series
    Patent number: 4572806
    Abstract: In an improved process for the continuous production of tetrachlorophthalonitrile, of the type with activated carbon fluidized bed reactor, under whose grid melted and atomized phthalonitrile, chlorine, hydrochloric acid and possibly nitrogen are simultaneously introduced the use of a second static bed reactor, also of activated carbon, in series with the first, is provided for, thereby greatly improving the life of the catalyzer, and, above all, the quality of the product.
    Type: Grant
    Filed: July 10, 1984
    Date of Patent: February 25, 1986
    Assignee: Caffaro S.p.A.
    Inventors: Giuseppe Ghielmetti, Liborio Casale, Giordano Donelli
  • Process for the continuous production of tetrachlorophthalonitrile in a fluidized bed reactor
    Patent number: 4485050
    Abstract: In an improved process of the continuous production of tetrachlorophthalonitrile, molten atomized phthalonitrile, chlorine, hydrochloric acid and possibly nitrogen are fed simultaneously below the grid of a reactor with a fluidized bed of activated carbon, and the tetrachlorophthalonitrile is separated and recovered continuously by simple cooling.
    Type: Grant
    Filed: May 13, 1983
    Date of Patent: November 27, 1984
    Assignee: Caffaro S.p.A.
    Inventors: Liborio Casale, Giordano Donelli