Patents by Inventor Koiti Araki

Koiti Araki 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 production of nanoparticles and compositions
    Patent number: 10344201
    Abstract: This invention describes the development of technology for the preparation of superparamagnetic lipophilic nanofluids, as well as of drilling fluid additives based on the aforementioned nanofluids, which improve the properties which form walls or mud filter cakes and concomitantly act as contrast agents in RMN logging.
    Type: Grant
    Filed: February 25, 2016
    Date of Patent: July 9, 2019
    Assignees: PETRÓLEO BRASILEIRO S.A.—PETROBRAS, Universidade de Sao Paulo—USP
    Inventors: Koiti Araki, Sergio Hiroshi Toma, Delmárcio Gomes Da Silva, Henrique Eisi Toma, Rita de Cássia Comis Wagner, Bernardo Coutinho Camilo Dos Santos, Alex Tadeu de Almeida Waldmann
  • Process for obtaining nanocomposites, nanocomposite, method of capture and retrieval of a solubilized and/or dispersed material in organic or inorganic medium, method of purification of an organic or inorganic medium and capture and retrieval kit for a solubilized and/or dispersed material in organic or inorganic medium
    Patent number: 10086358
    Abstract: The present invention lies in the fields of chemistry and nanotechnology and describes a nanocomposite to be used in the recovery of several compounds from inorganic or organic medium. Specifically, the invention presents a nanocomposite consisting of magnetic nanoparticles composed of Fe3O4 associated to an activated charcoal adsorbent substrate, a process to obtain and methods of use of the nanocomposite. The present invention enables the processing, concentration and recovery of large volumes of contaminated water, regenerating magnetic adsorbent material for reuse, in a cyclic and sustainable manner, transforming dispersed/diluted pollutants in pre-concentrates that can be easily processed, helping to conserve natural resources.
    Type: Grant
    Filed: June 11, 2015
    Date of Patent: October 2, 2018
    Assignees: PETROLEO BRASILEIRO S.A.-PETROBRAS, Universidade de Sao Paulo-USP
    Inventors: Koiti Araki, Ulisses Condomitti Epamino, Alceu Totti Silveira Junior, Sergio Hiroshi Toma, Henrique Eisi Toma
  • PROCESS FOR THE PRODUCTION OF NANOPARTICLES AND COMPOSITIONS
    Publication number: 20160251561
    Abstract: This invention describes the development of technology for the preparation of superparamagnetic lipophilic nanofluids, as well as of drilling fluid additives based on the aforementioned nanofluids, which improve the properties which form walls or mud filter cakes and concomitantly act as contrast agents in RMN logging.
    Type: Application
    Filed: February 25, 2016
    Publication date: September 1, 2016
    Applicants: PETRÓLEO BRASILEIRO S.A. - PETROBRAS, Universidade de Sao Paulo - USP
    Inventors: Koiti ARAKI, Sergio Hiroshi TOMA, Delmárcio Gomes DA SILVA, Henrique Eisi TOMA, Rita de Cássia Comis WAGNER, Bernardo Coutinho Camilo DOS SANTOS, Alex Tadeu de Almeida WALDMANN
  • PROCESS FOR OBTAINING NANOCOMPOSITES, NANOCOMPOSITE, METHOD OF CAPTURE AND RETRIEVAL OF A SOLUBILIZED AND/OR DISPERESED MATERIAL IN ORGANIC OR INORGANIC MEDIUM, METHOD OF PURIFICATION OF AN ORGANIC OR INORGANIC MEDIUM AND CAPTURE AND RETRIEVAL KIT FOR A SOLUBILIZED AND/OR DISPERSED MATERIAL IN ORGANIC OR INORGANIC MEDIUM
    Publication number: 20150367324
    Abstract: The present invention lies in the fields of chemistry and nanotechnology and describes a nanocomposite to be used in the recovery of several compounds from inorganic or organic medium. Specifically, the invention presents a nanocomposite consisting of magnetic nanoparticles composed of Fe3O4 associated to an activated charcoal adsorbent substrate, a process to obtain and methods of use of the nanocomposite. The present invention enables the processing, concentration and recovery of large volumes of contaminated water, regenerating magnetic adsorbent material for reuse, in a cyclic and sustainable manner, transforming dispersed/diluted pollutants in pre-concentrates that can be easily processed, helping to conserve natural resources.
    Type: Application
    Filed: June 11, 2015
    Publication date: December 24, 2015
    Applicants: Universidade de Sao Paulo-USP, PETROLEO BRASILEIRO S.A. - PETROBRAS
    Inventors: Koiti ARAKI, Ulisses Condomitti EPAMINO, Alceu Totti SILVEIRA JUNIOR, Sergio Hiroshi TOMA, Henrique Eisi TOMA
  • Stabilized inorganic nanoparticle, stabilized inorganic nanoparticle material, method for producing stabilized inorganic nanoparticle, and method for using stabilized inorganic nanoparticle
    Patent number: 7875352
    Abstract: A stabilized inorganic nanoparticle which is stabilized by bonding protective ligands to a surface of an inorganic nanoparticle, wherein one part of binding sites on the surface of the inorganic nanoparticle are bonded to the protective ligand, the other part of the binding sites remain as a free site not bonded to the protective ligand, and satisfies the condition that the amount of the protective ligand bonded to the inorganic nanoparticle is a critical amount or the condition that the form of modifying the surface of the inorganic nanoparticle by the protective ligand is a critical modification form. According to the present invention, there is provided a stabilized inorganic nanoparticle that is stabilized by a protective ligand and can be rapidly functionalized with ease by bonding a functional ligand thereto.
    Type: Grant
    Filed: November 21, 2005
    Date of Patent: January 25, 2011
    Assignee: Japan Science and Technology Agency
    Inventors: Koiti Araki, Takuji Ogawa, Eisuke Mizuguchi
  • Stabilized Inorganic Nanoparticle, Stabilized Inorganic Nanoparticle Material, Method For Producing Stabilized Inorganic Nanoparticle, and Method For Using Stabilized Inorganic Nanoparticle
    Publication number: 20080268249
    Abstract: A stabilized inorganic nanoparticle which is stabilized by bonding protective ligands to a surface of an inorganic nanoparticle, wherein one part of binding sites on the surface of the inorganic nanoparticle are bonded to the protective ligand, the other part of the binding sites remain as a free site not bonded to the protective ligand, and satisfies the condition that the amount of the protective ligand bonded to the inorganic nanoparticle is a critical amount or the condition that the form of modifying the surface of the inorganic nanoparticle by the protective ligand is a critical modification form. According to the present invention, there is provided a stabilized inorganic nanoparticle that is stabilized by a protective ligand and can be rapidly functionalized with ease by bonding a functional ligand thereto.
    Type: Application
    Filed: November 21, 2005
    Publication date: October 30, 2008
    Inventors: Koiti Araki, Takuji Ogawa, Eisuke Mizuguchi