Patents Assigned to Semifab
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Patent number: 6368411Abstract: 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: GrantFiled: February 21, 2001Date of Patent: April 9, 2002Assignee: Semifab IncorporatedInventors: Glenn A. Roberson, Jr., Robert M. Genco, Robert B. Eglinton, Wayland Comer, Gregory K. Mundt
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Patent number: 6221163Abstract: 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: GrantFiled: December 14, 1999Date of Patent: April 24, 2001Assignee: Semifab IncorporatedInventors: Glenn A. Roberson, Jr., Robert M. Genco, Robert B. Eglinton, Wayland Comer, Gregory K. Mundt
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Patent number: 6187182Abstract: 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: GrantFiled: July 31, 1998Date of Patent: February 13, 2001Assignee: Semifab IncorporatedInventors: Gerald D. Reynolds, Gary M. Gallagher, John Burns, Mark V. Smith
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Patent number: 6168085Abstract: 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: GrantFiled: December 14, 1999Date of Patent: January 2, 2001Assignee: Semifab IncorporatedInventor: Kenneth P. Garcia
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Patent number: 6120371Abstract: 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: GrantFiled: October 21, 1998Date of Patent: September 19, 2000Assignee: Semifab IncorporatedInventors: Glenn A. Roberson, Jr., Robert M. Genco, G. Kyle Mundt
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Patent number: 6042651Abstract: 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: GrantFiled: January 29, 1999Date of Patent: March 28, 2000Assignee: Semifab IncorporatedInventors: Glenn A. Roberson, Jr., Robert M. Genco, Robert B. Eglinton, Wayland Comer, Gregory K. Mundt
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Patent number: 5879458Abstract: 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: GrantFiled: September 13, 1996Date of Patent: March 9, 1999Assignee: Semifab IncorporatedInventors: Glenn A. Roberson, Jr., Robert M. Genco, Robert B. Eglinton, Wayland Comer, Gregory K. Mundt
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Patent number: 5848933Abstract: 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: GrantFiled: August 21, 1997Date of Patent: December 15, 1998Assignee: Semifab, IncorporatedInventors: Glenn A. Roberson, Jr., Robert M. Genco, G. Kyle Mundt
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Patent number: 5815637Abstract: 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: GrantFiled: May 13, 1996Date of Patent: September 29, 1998Assignee: Semifab CorporationInventors: Stuart V. Allen, Robert Bruce Eglinton
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Patent number: 5674123Abstract: 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: GrantFiled: July 18, 1995Date of Patent: October 7, 1997Assignee: SemifabInventors: Glenn A. Roberson, Jr., Robert M. Genco, G. Kyle Mundt
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Patent number: 5315766Abstract: 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: GrantFiled: May 22, 1992Date of Patent: May 31, 1994Assignee: Semifab IncorporatedInventors: Glenn A. Roberson, Jr., Robert B. Eglinton
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Patent number: 5115576Abstract: 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: GrantFiled: September 26, 1990Date of Patent: May 26, 1992Assignee: Semifab IncorporatedInventors: Glenn A. Roberson, Jr., Robert B. Eglinton
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Patent number: 4977688Abstract: 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: GrantFiled: October 27, 1989Date of Patent: December 18, 1990Assignee: Semifab IncorporatedInventors: Glenn A. Roberson, Jr., Robert B. Eglinton