Patents Assigned to Directa Plus S.p.A.
  • Patent number: 11426636
    Abstract: Golf ball consisting of an inner part comprising at least an elastomeric polymer and a reinforcing agent comprising graphene nano-platelets in which at least 90% of the nano-platelets has a lateral size (x, y) from 50 to 50,000 nm and a thickness (z) from 0.34 to 45 nm, and a C/O ratio ?100:1.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: August 30, 2022
    Assignee: Directa Plus S.p.A.
    Inventors: Giulio Giuseppe Cesareo, Massimiliano Bianchi, Antonino Di Pasquale
  • Patent number: 10920045
    Abstract: Elastomeric composition for producing tire components comprising, based upon parts by weight per 100 parts by weight of rubber (phr): (A) 100 phr of a blend of rubber comprising at least 20% by weight of an isoprene polymer; (B) from 0 to 30 phr of silica; (C) from 0 to 50 phr of amorphous carbon black; (D) from 1 to 40 phr of graphene, wherein the graphene consists of graphene nanoplatelets, wherein at least 90% have a lateral size (x, y) from 50 to 50000 nm and a thickness (z) from 0.34 to 50 nm, wherein the lateral size is always greater than the thickness (x, y>z), and wherein the C/O ratio is ?100:1.
    Type: Grant
    Filed: July 25, 2016
    Date of Patent: February 16, 2021
    Assignee: DIRECTA PLUS S.P.A.
    Inventors: Giulio Cesareo, Massimiliano Bianchi, Antonino Di Pasquale
  • Patent number: 10913666
    Abstract: Process for the treatment of water containing low quantities of hydrocarbons (as dispersed or dissolved or emulsified) by means of expanded graphite having an apparent density from 2 to less than 5 g/l, wherein said hydrocarbons are present in a quantity less than or equal to 1 g/l, a specific surface area from 50 to 100 m2/g and a carbon/oxygen ratio (C:O)?100. The expanded graphite is mixed vigorously for a short time with the water contaminated by hydrocarbons and easily separated at the end of the treatment.
    Type: Grant
    Filed: August 9, 2017
    Date of Patent: February 9, 2021
    Assignee: Directa Plus S.p.A.
    Inventors: Giulio Cesareo, Annalisa Pola, Laura Giorgia Rizzi
  • Patent number: 10773954
    Abstract: Process for producing pristine graphene nanoplatelets, comprising the expansion of flakes of intercalated graphite and the collection thereof in water with formation of a dispersion in the substantial absence of surfactants, followed by an exfoliation and size reduction treatment carried out using ultrasonication of the aqueous dispersion or using high pressure homogenization thereof in a high shear homogenizer. A dispersion of pristine graphene is obtained in the form of nanoplatelets, at least 90% of which have a lateral size (x, y) from 50 to 50,000 nm and a thickness (z) from 0.34 to 50 nm, having a C/O ratio ?100:1 and a high electrical conductivity.
    Type: Grant
    Filed: June 16, 2015
    Date of Patent: September 15, 2020
    Assignee: Directa Plus S.p.A.
    Inventors: Giulio Cesareo, Maria Riccardo Parrini, Laura Giorgia Rizzi
  • Patent number: 10457557
    Abstract: Process for producing graphene nanoplatelets, comprising expanding flakes of intercalated graphite and collection of the same in a dispersing medium with forming of a dispersion that is subjected to exfoliation and size reduction treatment carried out by high pressure homogenization in a high shear homogenizer. A dispersion of graphene is obtained in the form of nanoplatelets, at least 90% of which have a lateral size (x, y) from 50 to 50,000 nm and a thickness (z) from 0.34 to 50 nm.
    Type: Grant
    Filed: June 16, 2015
    Date of Patent: October 29, 2019
    Assignee: DIRECTA PLUS S.P.A.
    Inventors: Giulio Cesareo, Maria Riccardo Parrini, Laura Giorgia Rizzi
  • Patent number: 10435837
    Abstract: Concentrated dispersion from 5 to 50% by weight of nanoparticles of graphene in water with a lateral size from 10 to 5000 nm and thickness from 0.34 to 30 nm. The production process comprises the dispersion in water of flakes of expanded graphite and the subsequent treatment with ultrasounds at an energy level of from 100 to 2000 W for a period from 1 to 100 hours.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: October 8, 2019
    Assignee: DIRECTA PLUS S.P.A.
    Inventors: Giulio Cesareo, Maria Riccardo Parrini, Laura Giorgia Rizzi
  • Patent number: 9909015
    Abstract: A flame retardant composition comprising graphene nanoplatelets and a condensation product of a sulfonated aromatic compound with formaldehyde, wherein the w/w ratio between the graphene and the condensation product is in the range of 1:15 to 4:1. The composition may be in the form of a water dispersion applied to the surface of the article to be treated. The composition has optimal flame retardant properties even when applied in relatively modest quantities.
    Type: Grant
    Filed: August 7, 2014
    Date of Patent: March 6, 2018
    Assignee: DIRECTA PLUS S.P.A.
    Inventors: Giulio Cesareo, Maria Riccardo Parrini, Laura Giorgia Rizzi
  • Publication number: 20160185981
    Abstract: A flame retardant composition comprising graphene nanoplatelets and a condensation product of a sulfonated aromatic compound with formaldehyde, wherein the w/w ratio between the graphene and the condensation product is in the range of 1:15 to 4:1. The composition may be in the form of a water dispersion applied to the surface of the article to be treated. The composition has optimal flame retardant properties even when applied in relatively modest quantities.
    Type: Application
    Filed: August 7, 2014
    Publication date: June 30, 2016
    Applicant: DIRECTA PLUS S.p.A.
    Inventors: Giulio CESAREO, Maria Riccardo PARRINI, Laura Giorgia RIZZI
  • Publication number: 20150376014
    Abstract: Concentrated dispersion from 5 to 50% by weight of nanoparticles of graphene in water with a lateral size from 10 to 5000 nm and thickness from 0.34 to 30 nm. The production process comprises the dispersion in water of flakes of expanded graphite and the subsequent treatment with ultrasounds at an energy level of from 100 to 2000 W for a period from 1 to 100 hours.
    Type: Application
    Filed: February 28, 2014
    Publication date: December 31, 2015
    Applicant: DIRECTA PLUS S.P.A.
    Inventors: Giulio CESAREO, Maria Riccardo PARRINI, Laura Giorgia RIZZI
  • Patent number: 9034297
    Abstract: A process for the production of nano-structures is presented, involving providing a graphite flake comprising graphene layers; intercalating the graphite flake to form a graphite intercalation compound exhibiting Stage I, II or III intercalation; and exfoliating the graphite intercalation compound by exposing it to a temperature between about 1600° C. and about 2400° C. such that a plurality of individual graphene layers are separated from the graphite intercalation compound.
    Type: Grant
    Filed: June 7, 2010
    Date of Patent: May 19, 2015
    Assignee: DIRECTA PLUS S.P.A.
    Inventor: Robert Angelo Mercuri
  • Patent number: 8986602
    Abstract: The reactor is used for producing nano-particles of metal from volatile moieties in flow through mode. The reactor comprises at least a first feeder and a second feeder on one end of the vessel. The first feeder feeds the moiety in the form of an educt fluid into the reactor. This fluid is a mixture of metal moieties and a bearer fluid, entering the reactor in a vaporized state, in which the bearer fluid is used as a carrier gas. The second feeder is used as a radiator means to heat up the educt fluid within the reactor. By providing the heating fluid through the second feeder control over some environmental conditions like ambient temperature within the reactor is achieved and dissociation of the metal moieties under such controlled conditions leads to quantitative production of selected nano-particle morphologies.
    Type: Grant
    Filed: August 29, 2011
    Date of Patent: March 24, 2015
    Assignee: Directa Plus S.p.A.
    Inventors: Robert Mercuri, Michael Kasper, Emilie Bekaert, Peter Axmann