Patents by Inventor Joao C. Teixeira

Joao C. Teixeira 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).

  • Patent number: 9712571
    Abstract: A method and system are provided for admitting new participants to an ongoing conference session. In one example, a conference server hosting a conference session may receive a request for a UE to join the ongoing conference session. In response to receiving such a request, the conference server may determine whether to admit the UE to the ongoing conference session as a full participant or as a partial participant. When the conference server determines to admit the UE as a full participant, the conference server establishes a conference leg with the UE and permits the UE to communicate with each and every current participant of the ongoing conference session. However, when the conference server determines to admit the UE as a partial participant, the conference server may establish a conference leg with the UE and may permit the UE to communicate with just some of the ongoing conference's current participants.
    Type: Grant
    Filed: July 16, 2014
    Date of Patent: July 18, 2017
    Assignee: Sprint Spectrum L.P.
    Inventors: Lyle T. Bertz, Joao C. Teixeira De Magalhaes, Von K. McConnell, Lyle W. Paczkowski, Stephen J. Bye
  • Patent number: 9591465
    Abstract: Disclosed are methods and systems to facilitate automatic distribution of communications. In particular, a server may maintain data that indicates at least one registered subject-matter interest respectively for each of a plurality of users. Further, the server may receive a communication from a source user. The source user may be served by a particular base station. In response to receiving the communication, the server may identify one or more target users based on each target user (i) having at least one registered subject-matter interest that matches at least one subject-matter interest of the source user and (ii) being served either by the same particular base station that serves the source user or by a base station adjacent to the particular base station that serves the source user. The server may forward the communication to each identified target user.
    Type: Grant
    Filed: December 7, 2015
    Date of Patent: March 7, 2017
    Assignee: Sprint Spectrum L.P.
    Inventors: Joao C. Teixeira De Magalhaes, Vivek Vijayan, Oliver Chu, Xiaodi Yu, Jose Ernesto Almas de Jesus, Jr., Sarunya Aroonsirichoke, Veena Chilukala, Kayla Fowler
  • Patent number: 8830971
    Abstract: Disclosed is a mobile hotspot that includes multiple cellular radios and that is arranged to limit the number of concurrent local connections that it will support, based at least in part on which of its cellular radios is currently active.
    Type: Grant
    Filed: July 26, 2011
    Date of Patent: September 9, 2014
    Assignee: Sprint Spectrum L.P.
    Inventors: Trevor D. Shipley, Cesar Perez, Joao C. Teixeira
  • Patent number: 7703142
    Abstract: An authorization system is described that includes a first interface, a processing system, and a second interface. The first interface is configured to receive an authorization instruction from an enterprise and receive an authorization request from a user device. The authorization instructions indicate authorization parameters. The user device transfers the authorization request each time the application is selected for execution. The authorization instructions are based on a license obtained by the enterprise for an application and wherein a user device operated by a user has the application. The processing system is configured to process the authorization request and authorization parameters to determine if the execution of the application is authorized. The second interface is configured to transfer an authorized message to the user device if the execution of the application is authorized and transfer an unauthorized message to the user device if the execution of the application is not authorized.
    Type: Grant
    Filed: May 6, 2004
    Date of Patent: April 20, 2010
    Assignee: Sprint Communications Company L.P.
    Inventors: Patrick D. Wilson, Joao C. Teixeira, Kenneth V. George, Adam C. Workman
  • Patent number: 5068010
    Abstract: An apparatus for removing oil, gas and by-products from pyrobituminous shale impregnated with hydrocarbons utilizes a vertically disposed reactor having a top portion, a middle portion and a bottom portion. As shale is introduced into the top portion of the reactor through a rotary seal mechanism, hot gasses are introduced into the middle portion of the reactor through hollow, parallel tubes having a hexagonal configuration with gas introducing holes disposed in the side walls which are protected by overhanging portions of the top walls. Relatively cool gasses are introduced into the bottom portion of the reactor through horizontally disposed circumferentially spaced pipes having downwardly and outwardly chamfered inner ends to prevent clogging of the pipes. The hot effluent gasses from the top portion of the reactor are passed through the cyclone, a heat regenerator for reducing the temperature of the gaseous stream and an electrostatic precipitator prior to being compressed.
    Type: Grant
    Filed: May 9, 1990
    Date of Patent: November 26, 1991
    Assignee: Petroleo Brasileiro S.A. - Petrobras
    Inventors: Rene Mundstock, Kuniyuki Terabe, Antonio R. Lamprecht, Joao C. Teixeira, Altair R. D. Batista, Edson d. Dias, Luiz D. Santos, Osvaldo Amorim, Joel Rezende, Jorge H. Filho, Joao C. Gobbo, Romeu Machado
  • Patent number: 4944867
    Abstract: The process for obtaining oil, gas and other products from pyrobituminous shales and the like includes introducing crushed shale into a retort and contacting the crushed shale in the top portion of the retort with a stream of retort gases. Hot gases are injected at an intermediate point of the retort and a stream of cold gases are injected at the bottom of the retort. The gaseous retorted matter above the zone where the shale undergoes pyrolysis is removed and directed to a cyclone from separation of heavy liquid components from a gaseous stream. The gaseous stream is then purified and compressed with a portion of the compressed stream being heated and reinjected as the steam of hot gases into the retort. The other portion of the compressed stream of gases is cooled and a liquid component consisting primarily of water and heavy oil is separate therefrom in a spray tower.
    Type: Grant
    Filed: December 22, 1987
    Date of Patent: July 31, 1990
    Assignee: Petreleo Brasileiro S.A. - Petrobras
    Inventors: Rene Mundstock, Kuniyuki Terabe, Antonio R. de Almeida Lamprecht, Joao C. Teixeira, Altair R. D. Batista, Edson d. Dias, Luiz D. Santos, Osvaldo Amorim, Joel Rezende, Jorge H. Filho, Joao C. Gobbo, Romeu Machado
  • Patent number: 4399846
    Abstract: A mechanism for the granulometric distribution of solid particles being loaded into a vessel of relatively large dimensions, such as a process reactor, blast furnace, silo, incinerator, dryer, etc., from equipment of small dimensions in relation to the vessel, includes a feed hopper which has an outlet opening that can be variably positioned within the mechanism to introduce the solid particles into a chamber located above the uppermost ends of a plurality of concentric, inclined, preferably conical or pyramidal surfaces. The latter define respective generally downwardly directed free flow paths for the particles to conduct them to a lower location where they enter the upper ends of a corresponding plurality of concentric sets of descending tubes. The discharge ends of the tubes where they feed into the vessel being charged are disposed in a symmetric array.
    Type: Grant
    Filed: April 20, 1981
    Date of Patent: August 23, 1983
    Assignee: Petroleo Brasileiro S.A. - Petrobras
    Inventors: Edson De Souza Dias, Luiz D. D. Santos, Joao C. Teixeira, Osvaldo Amorin, Antonio R. D. A. Lamprecht