Patents by Inventor Daniel Alvarez

Daniel Alvarez 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: 8075704
    Abstract: The present invention discloses a method for the removal of a number of molecular contaminants from surfaces within a device. A purge gas containing oxygen and/or water is introduced into the interior of the device, contacting at least a portion of the interior surfaces. A contaminated purge gas is produced by transferring a portion of the contamination from the interior surfaces into the purge gas. The contaminated purge gas is removed from the device and the process is continued until the contaminant concentration in the contaminated purge gas is below a predetermined level.
    Type: Grant
    Filed: June 1, 2004
    Date of Patent: December 13, 2011
    Assignee: Entegris, Inc.
    Inventors: Jeffrey J. Spiegelman, Daniel Alvarez, Jr., Russell J. Holmes, Allan Tram
  • Publication number: 20110233072
    Abstract: A method of purifying a hydrogen stream using an electrochemical cell having an enclosed electrically conductive cylindrical outer shell and a hollow wet polymeric membrane located within and parallel to the longitudinal axis of the cylindrical member which provides an inner compartment and an outer compartment. An electrode having a longitudinal axis is located within the inner compartment and is spaced from the hollow polymeric membrane. A gas inlet for feeding a hydrogen stream that is to be purified communicates with the inner compartment and a gas outlet is provided for passing purified hydrogen gas thru the cylindrical outer shell. The electrode within the hollow wet polymeric membrane is connected to an anode terminal of a dc supply with an electrical conductor and the outer shell of the cylindrical shaped member is connected to a cathode terminal of the dc supply with another electrical conductor.
    Type: Application
    Filed: March 24, 2010
    Publication date: September 29, 2011
    Inventors: Alexander David Deptala, Daniel Alvarez, Arthur Deptala
  • Publication number: 20110233069
    Abstract: An apparatus, a system and a method for electrochemical generation of hydrogen are disclosed. The apparatus may include a cathode, a polymer electrolyte membrane surrounding the cathode and a housing surrounding the polymer electrolyte membrane. The housing may include an anode electrically connected to the cathode. The system for electrochemical generation of hydrogen may include a water purifier in fluid communication with a hydrogen generating unit, an electrolyte source in fluid communication with the hydrogen generation unit and a power source electrically connected to the hydrogen generating unit. The method may include passing water and electrolyte into the hydrogen generation unit and applying a voltage between the anode and the cathode to generate hydrogen gas.
    Type: Application
    Filed: March 24, 2011
    Publication date: September 29, 2011
    Applicant: RASIRC
    Inventors: Jeffrey J. Spiegelman, Daniel Alvarez, JR.
  • Publication number: 20110224517
    Abstract: Disclosed embodiments include a method for automatic detection of sleep apnea implemented in a medical apparatus, the method comprising (a) extracting a plurality of signal features by analyzing an oxygen saturation signal, (b) performing dimensionality reduction on the plurality of signal features to generate a plurality of signal features in a transformed space; and (c) displaying a sleep apnea diagnosis result based on a statistical classifier that operates on the plurality of signal features in a transformed space.
    Type: Application
    Filed: March 10, 2011
    Publication date: September 15, 2011
    Inventors: DANIEL ÁLVAREZ GONZÁLEZ, FÉLIX DEL CAMPO MATÍA, JOSÉ VICTOR MARCOS MARTÍN, PEDRO MATEO RIOBO ABOY, ROBERTO HORNERO SÁNCHEZ
  • Publication number: 20110201041
    Abstract: Disclosed is an apparatus and method whereby small particle nano materials may be contained in a highly functional package for fluid separation and/or purification applications. The package consists of an aerogel material which uniformly surrounds the nano-particles. The aerogel may be composed of carbon, silicon, or silicon oxide or other suitable materials. The morphological features of the aerogel may be tailored specifically towards fine particle and ultrafine particle containment while maintaining uniform fluid flow in separation and purification processes. The aerogel may be bonded to a suitable rigid housing by chemical or mechanical means.
    Type: Application
    Filed: February 14, 2010
    Publication date: August 18, 2011
    Inventors: Alexander David Deptala, Daniel Alvarez, Arthur Deptala
  • Patent number: 7969974
    Abstract: A method is provided in one example embodiment and it includes receiving a first plurality of packets from an active stream at an output device and communicating the first plurality of packets to a next destination. The method also includes receiving a second plurality of packets from a standby stream of the output device, the streams are sent by an input device. The method further includes performing a switchover at the output device such that the second plurality of packets is communicated to the next destination and the first plurality of packets is not. The switchover is triggered when a portion of the first plurality of the packets from the active stream is not received during a period of time that is greater than a majority of inter-arrival times of the second plurality of packets on the standby stream.
    Type: Grant
    Filed: October 15, 2008
    Date of Patent: June 28, 2011
    Assignee: Cisco Technology, Inc.
    Inventors: Jesus M. Arango, Daniel A. Alvarez
  • Patent number: 7936702
    Abstract: Facilitating Bi-Directional PIM communication between hosts in different multicast domains. A first rendezvous point (RP) router contained in a first multicast domain receives a first control packet. The first control packet includes a first multicast destination address G1. In response to receiving the first control packet, the first RP router generates a second control packet. This second control packet includes a second multicast destination address G2, wherein the second multicast destination address G2 is distinct from the first multicast IP address G1. After the second control packet is generated, the first RP router transmitting the second control packet toward a second RP router contained in a second multicast domain. The second control packet initiates a distribution tree building process between the first and second RP routers. This distribution tree can be used to transmit multicast data packets between the first and second RP routers.
    Type: Grant
    Filed: December 1, 2005
    Date of Patent: May 3, 2011
    Assignee: Cisco Technology, Inc.
    Inventors: Andrew Kessler, Lorenzo Vicisano, Daniel Alvarez, Toerless Eckert
  • Patent number: 7855950
    Abstract: A mechanism that provides congruent forwarding paths for unicast and multicast data traffic over a service provider core network includes issuing, by a receiver edge node, a request to join a multicast tree structure. A unicast path from the receiver edge node to a source node of the provider network is then established using a special message that contains an identifier. The identifier allows the unicast path through the core network to be aligned with the multicast tree structure. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.
    Type: Grant
    Filed: December 7, 2005
    Date of Patent: December 21, 2010
    Assignee: Cisco Technology, Inc.
    Inventors: John M. Zwiebel, Ali Sajassi, Dino Farinacci, Daniel Alvarez
  • Patent number: 7824628
    Abstract: A method and apparatus for the decontamination of fluid ammonia are described. Liquid or gaseous ammonia is purified of contaminants by passage through an adsorbent bed, the contaminants accumulating in the bed. A portion of the purified ammonia discharged from the bed is decomposed to hydrogen and nitrogen. The hydrogen is used to regenerate an adsorbent bed which has accumulated sufficient contaminants to reduce its ability to further decontaminate incoming ammonia satisfactorily. Preferably there are a plurality of interconnected adsorbent beds, with some being operated for ammonia decontamination while others are being regenerated, with their operations being reversed as needed to maintain a continual production of decontaminated ammonia from the plurality of beds. Computers or other controllers can be used to control such bed operations and interchanges. Internal production of hydrogen makes the system self-contained and no addition of hydrogen is needed.
    Type: Grant
    Filed: May 7, 2002
    Date of Patent: November 2, 2010
    Assignee: Entegris, Inc.
    Inventors: Daniel Alvarez, Jr., Jeffrey J. Spiegelman
  • Publication number: 20100091645
    Abstract: A method is provided in one example embodiment and it includes receiving a first plurality of packets from an active stream at an output device and communicating the first plurality of packets to a next destination. The method also includes receiving a second plurality of packets from a standby stream of the output device, the streams are sent by an input device. The method further includes performing a switchover at the output device such that the second plurality of packets is communicated to the next destination and the first plurality of packets is not. The switchover is triggered when a portion of the first plurality of the packets from the active stream is not received during a period of time that is greater than a majority of inter-arrival times of the second plurality of packets on the standby stream.
    Type: Application
    Filed: October 15, 2008
    Publication date: April 15, 2010
    Inventors: Jesus M. Arango, Daniel A. Alvarez
  • Publication number: 20090272461
    Abstract: A transfer container for transferring an object between environments is described. The transfer container comprises an enclosure; a purifier comprising a purification material, the purifier attached to the enclosure, the purifier configured to purify fluid flowing into the enclosure; and a fluid propelling means, attached to the enclosure, for propelling fluid through the purifier and into the enclosure.
    Type: Application
    Filed: July 31, 2006
    Publication date: November 5, 2009
    Inventors: Daniel Alvarez, JR., Troy B. Scoggins, Russell J. Holmes
  • Publication number: 20090229346
    Abstract: A method of detecting a molecular species in an electronics processing environment is disclosed. The method exposes a capture substrate to the processing environment. The capture substrate has a surface area different from the surface area of an electronic substrate undergoing electronics processing. The molecular species is transferred from the environment to the capture substrate. A characteristic of the molecular species is identified, thereby detecting the species. Other methods utilize a capture substrate to remove the molecular species from an electronic processing environment, or use the capture substrate to determine the presence of a molecular species in a transfer container operating between two process environments or two intermediate process steps. Systems for carrying out the methods are also disclosed.
    Type: Application
    Filed: July 31, 2006
    Publication date: September 17, 2009
    Inventors: Daniel Alvarez, JR., Troy B. Scoggins, Jeffrey J. Spiegelman
  • Patent number: 7510692
    Abstract: A method for hydride gas purification uses materials having at least one lanthanide metal or lanthanide metal oxide. The method reduces contaminants to less than 100 parts per billion (ppb), preferably 10 ppb, more preferably 1 ppb. The material can also include transition metals and transition metal oxides, rare earth elements and other metal oxides. The invention also includes materials for use in the method of the invention.
    Type: Grant
    Filed: July 21, 2004
    Date of Patent: March 31, 2009
    Assignee: Entegris, Inc.
    Inventors: Daniel Alvarez, Jr., Jeffrey J. Spiegelman, Joshua T. Cook, Tram Doan Nguyen, Daniel A. Lev, Troy B. Scoggins
  • Publication number: 20090021953
    Abstract: The lighting and/or signaling system according to the invention comprises at least one lighting and/or signaling device which is able to emit at least one light beam and is equipped with at least one actuator for adjusting an angle of the light beam, and at least one actuator control device for controlling the actuator. According to the invention, the actuator control device transmits an active setpoint information item to the actuator only when a current value of the setpoint information item differs substantially from a previous value of the setpoint information item. The improved actuator control incorporated in the system according to the invention helps to achieve greater reliability and a longer service life.
    Type: Application
    Filed: September 26, 2008
    Publication date: January 22, 2009
    Applicant: VALEO VISION
    Inventors: Daniel Alvarez Garcia, Pascal POIROT
  • Patent number: 7446653
    Abstract: The lighting and/or signaling system according to the invention comprises at least one lighting and/or signaling device which is able to emit at least one light beam and is equipped with at least one actuator for adjusting an angle of the light beam, and at least one actuator control device for controlling the actuator. According to the invention, the actuator control device transmits an active setpoint information item to the actuator only when a current value of the setpoint information item differs substantially from a previous value of the setpoint information item. The improved actuator control incorporated in the system according to the invention helps to achieve greater reliability and a longer service life.
    Type: Grant
    Filed: January 24, 2006
    Date of Patent: November 4, 2008
    Assignee: Valeo Vision
    Inventors: Daniel Alvarez Garcia, Pascal Poirot
  • Patent number: 7418003
    Abstract: A method, apparatus, or computer executable instructions for converting Protocol Independent Mode (PIM) requests. In one embodiment, the method includes receiving a first multicast routing protocol (MRP) message, wherein the first MRP message is a request to join a multicast group of receivers. The first MRP message is translated into a second MRP message, wherein the second MRP message is a request to join the multicast group of receivers to which data is being provided by a specific source. The method could be performed by a router contained in a sparse mode network, wherein the sparse mode network is coupled to a source specific mode network that contains the specific source.
    Type: Grant
    Filed: February 12, 2004
    Date of Patent: August 26, 2008
    Assignee: Cisco Systems, Inc.
    Inventors: Daniel Alvarez, Arjen Boers, Toerless Eckert, Ijsbrand Wijnands
  • Publication number: 20080175269
    Abstract: In one embodiment, a method for routing data flow during ECMP routing between two network nodes is provided. The method may comprise determining a bandwidth requirement of a data flow during ECMP routing, the data flow to be sent between at least two network nodes, the at least two network nodes communicating via a plurality of data paths. The method may further comprise determining the available bandwidth on each of the plurality of data paths and selecting the data path having sufficient bandwidth to accommodate the bandwidth of the data flow.
    Type: Application
    Filed: January 22, 2007
    Publication date: July 24, 2008
    Inventors: Daniel A. Alvarez, Toerless Eckert
  • Patent number: 7381243
    Abstract: The invention is a method for the decontamination of CO2 to a sufficient level of purity to allow it to be used in the semiconductor industry. The invention comprises the exposure of fluid CO2 to a combination metallic states of at least one metal under the appropriate conditions for removal of contaminants. The adsorbents are then decontaminated/activated to return the adsorbent to a mixed oxidation state and allow further rounds of decontamination. The adsorbents are selected to be complimentary to each other, preferentially adsorbing different contaminants. Additionally, the adsorbents are selected to undergo reduction differently such that upon regeneration only a portion of the metals are reduced and the adsorbent is returned essentially to its original state.
    Type: Grant
    Filed: October 16, 2003
    Date of Patent: June 3, 2008
    Assignee: Entegris, Inc.
    Inventors: Daniel Alvarez, Jr., Jeffrey J. Spiegelman, Russell J. Holmes
  • Patent number: 7377982
    Abstract: The present invention discloses a method for the removal of a number of molecular contaminants from surfaces within a device. A purge gas containing oxygen and/or water is introduced into the interior of the device, contacting at least a portion of the interior surfaces. A contaminated purge gas is produced by transferring a portion of the contamination from the interior surfaces into the purge gas. The contaminated purge gas is removed from the device and the process is continued until the contaminant concentration in the contaminated purge gas is below a predetermined level.
    Type: Grant
    Filed: April 25, 2005
    Date of Patent: May 27, 2008
    Assignee: Entegris, Inc.
    Inventors: Daniel Alvarez, Jr., Jeffrey J Spiegelman
  • Publication number: 20080107580
    Abstract: The invention is a method and apparatus for removing metal compounds from ultra-high purity gases using a purifier material comprising a high surface area inorganic oxide, so that the metals do not deposit on a sensitive device and cause device failure.
    Type: Application
    Filed: July 19, 2005
    Publication date: May 8, 2008
    Inventors: Daniel Alvarez, Troy B. Scoggins, Tran Doan Nguyen, Yasushi Ohyashiki