Patents Assigned to Semifab
  • Patent number: 6368411
    Abstract: The system and method for molecular contamination control permits purging a SMIF pod to desired levels of relative humidity, oxygen, or particulates. The SMIF pod includes an inlet port including a check valve and filter assembly for supplying a clean, dry gaseous working fluid to maintain low levels of moisture, oxygen, and particulate content around materials contained in the SMIF pod. The SMIF pod outlet port, which also includes a check valve and filter assembly, is connected with an evacuation system. Flow of purge gas inside the SMIF pod can be directed with one or more nozzle towers to encourage laminar flow inside the pod, and one or more outlet towers., having a function similar to that of the inlet tower, may also be provided. The purge gas can be dried by exposure to a desiccant, heated to temperatures between about 100° C. and about 120° C., and can be tested for baseline constituent levels prior to or after introduction into a SMIF pod.
    Type: Grant
    Filed: February 21, 2001
    Date of Patent: April 9, 2002
    Assignee: Semifab Incorporated
    Inventors: Glenn A. Roberson, Jr., Robert M. Genco, Robert B. Eglinton, Wayland Comer, Gregory K. Mundt
  • Patent number: 6221163
    Abstract: The system and method for molecular contamination control permits purging a SMIF pod to desired levels of relative humidity, oxygen, or particulates. The SMIF pod includes an inlet port including a check valve and filter assembly for supplying a clean, dry gaseous working fluid to maintain low levels of moisture, oxygen, and particulate content around materials contained in the SMIF pod. The SMIF pod outlet port, which also includes a check valve and filter assembly, is connected with an evacuation system. Flow of purge gas inside the SMIF pod can be directed with one or more nozzle towers to encourage laminar flow inside the pod, and one or more outlet towers,, having a function similar to that of the inlet tower, may also be provided. The purge gas can be dried by exposure to a desiccant, heated to temperatures between about 100° C. and about 120° C., and can be tested for baseline constituent levels prior to or after introduction into a SMIF pod.
    Type: Grant
    Filed: December 14, 1999
    Date of Patent: April 24, 2001
    Assignee: Semifab Incorporated
    Inventors: Glenn A. Roberson, Jr., Robert M. Genco, Robert B. Eglinton, Wayland Comer, Gregory K. Mundt
  • Patent number: 6187182
    Abstract: The filter cartridge assembly has a valve body having an interior flow passage, a filter across the interior flow passage, and a check valve assembly in the valve body. The filter removes particulates as small as 0.003 microns. A check valve element adjacent to a valve seat in the interior flow passage has a check valve poppet and a stem. The check valve poppet has a relatively narrow neck, and the check valve poppet is tapered inwardly from the outlet end toward the neck at an oblique angle relative to the longitudinal axis of the valve body that is substantially equal to the oblique angle of the annular valve seat.
    Type: Grant
    Filed: July 31, 1998
    Date of Patent: February 13, 2001
    Assignee: Semifab Incorporated
    Inventors: Gerald D. Reynolds, Gary M. Gallagher, John Burns, Mark V. Smith
  • Patent number: 6168085
    Abstract: A system and method are provided for controlling temperature and humidity of an environment for a process chamber for semiconductor manufacturing materials. A supply of filtered, temperature and humidity controlled gaseous working fluid is provided to a process chamber, and is controlled by cascade control based upon sensing of environmental parameters to be controlled both upstream and downstream of a chemical filter, which can be a charcoal filter. A controller determines a first control error output by comparing a desired process parameter set point for the controlled environmental parameter of the gaseous working fluid with the first sensed value, determines a second set point from the first control error, and controls the supply of the temperature and humidity controlled gaseous working fluid based upon the second set point.
    Type: Grant
    Filed: December 14, 1999
    Date of Patent: January 2, 2001
    Assignee: Semifab Incorporated
    Inventor: Kenneth P. Garcia
  • Patent number: 6120371
    Abstract: The docking and purging system docks a modular isolation container for substrates used in manufacturing integrated circuits for purging and processing in a processing environment. A door portion of the docking and purging system includes a shelf for receiving the modular isolation container before insertion in a docking chamber formed in the housing connected for communication with the processing environment. A vacuum manifold with suction cups is provided for gripping and removing the modular isolation container door to allow access to the interior chamber of the modular isolation container. The docking chamber and interior chamber of the modular isolation container can also be purged of particulate contaminates by filtered air or inert gas ducted to the docking chamber.
    Type: Grant
    Filed: October 21, 1998
    Date of Patent: September 19, 2000
    Assignee: Semifab Incorporated
    Inventors: Glenn A. Roberson, Jr., Robert M. Genco, G. Kyle Mundt
  • Patent number: 6042651
    Abstract: The system and method for molecular contamination control permits purging a SMIF pod to desired levels of relative humidity, oxygen, or particulates. The SMIF pod includes an inlet port including a check valve and filter assembly for supplying a clean, dry gaseous working fluid to maintain low levels of moisture, oxygen, and particulate content around materials contained in the SMIF pod. The SMIF pod outlet port, which also includes a check valve and filter assembly, is connected with an evacuation system. Flow of purge gas inside the SMIF pod can be directed with one or more nozzle towers to encourage laminar flow inside the pod, and one or more outlet towers, having a function similar to that of the inlet tower, may also be provided. The purge gas can be dried by exposure to a desiccant, heated to temperatures between about 100.degree. C. and about 120.degree. C., and can be tested for baseline constituent levels prior to or after introduction into a SMIF pod.
    Type: Grant
    Filed: January 29, 1999
    Date of Patent: March 28, 2000
    Assignee: Semifab Incorporated
    Inventors: Glenn A. Roberson, Jr., Robert M. Genco, Robert B. Eglinton, Wayland Comer, Gregory K. Mundt
  • Patent number: 5879458
    Abstract: The system and method for molecular contamination control permits purging a SMIF pod to desired levels of relative humidity, oxygen, or particulates. The SMIF pod includes an inlet port including a check valve and filter assembly for supplying a clean, dry gaseous working fluid to maintain low levels of moisture, oxygen, and particulate content around materials contained in the SMIF pod. The SMIF pod outlet port, which also includes a check valve and filter assembly, is connected with an evacuation system. Flow of purge gas inside the SMIF pod can be directed with one or more nozzle towers to encourage laminar flow inside the pod, and one or more outlet towers, having a function similar to that of the inlet tower, may also be provided. The purge gas can be dried by exposure to a desiccant, heated to temperatures between about 100.degree. C. and about 120.degree. C., and can be tested for baseline constituent levels prior to or after introduction into a SMIF pod.
    Type: Grant
    Filed: September 13, 1996
    Date of Patent: March 9, 1999
    Assignee: Semifab Incorporated
    Inventors: Glenn A. Roberson, Jr., Robert M. Genco, Robert B. Eglinton, Wayland Comer, Gregory K. Mundt
  • Patent number: 5848933
    Abstract: The docking and purging system docks a modular isolation container for substrates used in manufacturing integrated circuits for purging and processing in a processing environment. A door portion of the docking and purging system includes a shelf for receiving the modular isolation container before insertion in a docking chamber formed in the housing connected for communication with the processing environment. A vacuum manifold with suction cups is provided for gripping and removing the modular isolation container door to allow access to the interior chamber of the modular isolation container. The docking chamber and interior chamber of the modular isolation container can also be purged of particulate contaminates by filtered air or inert gas ducted to the docking chamber.
    Type: Grant
    Filed: August 21, 1997
    Date of Patent: December 15, 1998
    Assignee: Semifab, Incorporated
    Inventors: Glenn A. Roberson, Jr., Robert M. Genco, G. Kyle Mundt
  • Patent number: 5815637
    Abstract: The humidifier for controlling humidity in a semi-conductor manufacturing environment provides a trickle water refill level control system for maintaining an accurate flow of refill water into the humidifier water tank. A water supply provides a substantially constant rate of flow of water to a conduit connected between the humidifier tank inlet port and the water overflow tank inlet port, to allow the excess water supplied to the humidifier water tank to flow to the overflow tank. The overflow tank has a float level control allowing for operation of the steam generating humidifier at higher steam pressures, and increased stability of the steam generation rate. A pressure equalization line is also connected between an upper portion of the humidifier water tank and an upper air reservoir of the water overflow tank for equalizing pressure between the humidifier water tank and the water overflow tank.
    Type: Grant
    Filed: May 13, 1996
    Date of Patent: September 29, 1998
    Assignee: Semifab Corporation
    Inventors: Stuart V. Allen, Robert Bruce Eglinton
  • Patent number: 5674123
    Abstract: The docking and purging system docks a modular isolation container for substrates used in manufacturing integrated circuits for purging and processing in a processing environment. A door portion of the docking and purging system includes a shelf for receiving the modular isolation container before insertion in a docking chamber formed in the housing connected for communication with the processing environment. A vacuum manifold with suction cups is provided for gripping and removing the modular isolation container door to allow access to the interior chamber of the modular isolation container. The docking chamber and interior chamber of the modular isolation container can also be purged of particulate contaminates by filtered air or inert gas ducted to the docking chamber.
    Type: Grant
    Filed: July 18, 1995
    Date of Patent: October 7, 1997
    Assignee: Semifab
    Inventors: Glenn A. Roberson, Jr., Robert M. Genco, G. Kyle Mundt
  • Patent number: 5315766
    Abstract: A device for drying articles such as semiconductor wafers comprising a vacuum process chamber for holding articles to be dried; a vapor generator substantially isolated from the process chamber for supplying a substance such as isopropyl alcohol in vapor form to the process chamber; a heater for heating the walls of the process chamber to discourage the substance vapor from condensing on the inside walls of the process chamber. The device can also be used for rinsing and cleansing articles prior to drying.
    Type: Grant
    Filed: May 22, 1992
    Date of Patent: May 31, 1994
    Assignee: Semifab Incorporated
    Inventors: Glenn A. Roberson, Jr., Robert B. Eglinton
  • Patent number: 5115576
    Abstract: A device for drying articles such as semiconductor wafers comprising a vacuum process chamber for holding articles to be dried; a vapor generator substantially isolated from the process chamber for supplying a substance such as isopropyl alcohol in vapor form to the process chamber; a heater for heating the walls of the process chamber to discourage the substance vapor from condensing on the inside walls of the process chamber. The device can also be used for rinsing and cleansing articles prior to drying.
    Type: Grant
    Filed: September 26, 1990
    Date of Patent: May 26, 1992
    Assignee: Semifab Incorporated
    Inventors: Glenn A. Roberson, Jr., Robert B. Eglinton
  • Patent number: 4977688
    Abstract: A device for drying articles such as semiconductor wafers comprising a vacuum process chamber for holding articles to be dried; a vapor generator substantially isolated from the process chamber for supplying a substance such as isopropyl alcohol in vapor form to the process chamber; a heater for heating the walls of the process chamber to discourage the substance vapor from condensing on the inside walls of the process chamber. The device can also be used for rinsing and cleansing articles prior to drying.
    Type: Grant
    Filed: October 27, 1989
    Date of Patent: December 18, 1990
    Assignee: Semifab Incorporated
    Inventors: Glenn A. Roberson, Jr., Robert B. Eglinton