Patents by Inventor Enrico Sironi

Enrico Sironi 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).

  • Additives based on hydroxyalkyl guar derivatives for use in mortars and mortars including them
    Patent number: 6706112
    Abstract: Disclosed are cementitious mortar additives comprising a hydroxyalkyl guar derivative having a molar substitution of from about 0.7 to about 3. Also disclosed are dry cementitious mortar compositions including from 0.1 to 1.5% by weight of the additive and cured cementitious mortars obtained by addition of water to the dry cementitious mortar compositions.
    Type: Grant
    Filed: June 3, 2002
    Date of Patent: March 16, 2004
    Assignee: Lamberti SpA
    Inventors: Enrico Sironi, Giampietro Margheritis, Ugo Claudio Pfeiffer, Giuseppe Li Bassi
  • ADDITIVES BASED ON HYDROXYALKYL GUAR DERIVATIVES FOR USE IN MORTARS AND MORTARS INCLUDING THEM
    Publication number: 20030221592
    Abstract: Disclosed are cementitious mortar additives including at least a hydroxyalkyl guar derivative. Also dislcosed are dry cementitious mortar competitions including from 0.1 to 1.5% by weight of the additive and cured cementitious mortars obtained by addition of water to the dry cementitious mortar compositions.
    Type: Application
    Filed: June 3, 2002
    Publication date: December 4, 2003
    Applicant: Lamberti SpA
    Inventors: Enrico Sironi, Giampietro Margheritis, Ugo Claudio Pfeiffer, Giuseppe Li Bassi
  • Main helicopter drive
    Patent number: 4659286
    Abstract: Main helicopter drive for transmitting drive to the countershaft even when the main shaft connected to the rotor is idle, and on which a sleeve, turned by a drive shaft and connected by gears to the countershaft, supports in rotary and axially-sliding manner, an inner tubular body angularly integral with the main shaft; an actuator being connected to the said tubular body for moving it between a normal position, in which the said tubular body is connected to the said sleeve by a freewheel on the latter, and a position in which the said freewheel engages the outer casing of a bearing fitted on to the said tubular body.
    Type: Grant
    Filed: May 10, 1985
    Date of Patent: April 21, 1987
    Assignee: Costruzioni Aeronautiche Giovanni Agusta S.p.A.
    Inventors: Attilio Garavaglia, Enrico Sironi, Rinaldo Gonzato