Patents by Inventor Francesco Frigerio

Francesco Frigerio 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 the preparation of 2,6-dimethylnaphthalene
    Patent number: 6232517
    Abstract: A highly selective process is described for preparing 2,6-dimethylnaphthalene which comprises reacting a naphthalene hydrocarbon selected from naphthalene, methylnaphthalenes, dimethylnaphthalenes, trimethylnaphthalenes, polymethylnaphthalenes or their mixtures with one or more benzene hydrocarbons selected from benzene, toluene, xylenes, trimethylbenzenes, tetramethylbenzenes, pentamethylbenzene and/or hexamethylbenzene, under at least partially liquid phase conditions, in the presence of a zeolite belonging to the structural type MTW and optionally in the presence of a methylating agent.
    Type: Grant
    Filed: June 13, 2000
    Date of Patent: May 15, 2001
    Assignee: Enichem S.p.A.
    Inventors: Giannino Pazzucconi, Carlo Perego, Roberto Millini, Francesco Frigerio, Riccardo Mansani, Daniele Rancati
  • Process for the preparation of 2,6-dimethylnaphthalene using a MTW zeolitic catalyst
    Patent number: 6147270
    Abstract: A highly selective process is described for preparing 2,6-dimethylnaphthalene which comprises reacting a naphthalene hydrocarbon selected from naphthalene, methylnaphthalenes, dimethylnaphthalenes, trimethylnaphthalenes, polymethylnaphthalenes or their mixtures with one or more benzene hydrocarbons selected from benzene, toluene, xylenes, trimethylbenzenes, tetramethylbenzenes, pentamethylbenzene and/or hexamethylbenzene, under at least partially liquid phase conditions, in the presence of a zeolite belonging to the structural type MTW and optionally in the presence of a methylating agent.
    Type: Grant
    Filed: March 31, 1999
    Date of Patent: November 14, 2000
    Assignee: Enichem S.p.A.
    Inventors: Giannino Pazzucconi, Carlo Perego, Roberto Millini, Francesco Frigerio, Riccardo Mansani, Daniele Rancati
  • IL-1 receptor antagonists with enhanced inhibitory activity
    Patent number: 5922573
    Abstract: DNA molecules that code for IL-1 antagonists with improved biological activity arc described. DNA molecules coding for improved IL-1 antagonists inserted into expression vectors and host cells transformed with the said vectors containing the DNA coding for improved IL-1 antagonists and a method for the production of improved IL-1 antagonists in essentially pure form are also described. Preparations that can be injected or can be administered by some other route, consisting of a pharmaceutical preparation of the said mutants, are particularly useful as drugs in the field of therapy.
    Type: Grant
    Filed: April 15, 1997
    Date of Patent: July 13, 1999
    Assignee: Dompe' S.p.A.
    Inventors: Diana Boraschi, Paola Bossu, Paolo Ruggiero, Giovanni Macchia, Aldo Tagliabue, Francesco Frigerio, Renata Grifantini, Gianni Frascotti, Guido Grandi