Radio Or High-frequency Energy Patents (Class 34/255)
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Patent number: 6539644Abstract: A method for controlling differential shrinkage during drying of ceramic honeycomb substrates by heating the ceramic honeycomb substrate with a vapor-insulating guard disposed substantially about the ceramic honeycomb substrate.Type: GrantFiled: September 15, 2001Date of Patent: April 1, 2003Assignee: Corning IncorporatedInventor: Carlos R. Araya
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Publication number: 20030015218Abstract: Semiconductor wafers are cleaned using megasonic energy to agitate cleaning fluid applied to the wafer. A source of energy vibrates an elongated probe which transmits the acoustic energy into the fluid. The probe has a solid cleaning rod and a flared or stepped rear base. In one form, the probe is made of one piece, and in another, the rod fits into a socket in the base. This enables a rod to be made of material which is compatible with the cleaning solution, while the base may be of a different material. A heat transfer member acoustically coupled to the probe base and to a transducer conducts heat away from the transducer. A housing for the heat transfer member and the transducer supports those components and provides means for conducting coolant through the housing to control the temperature of the transducer. In another arrangement, an end of the housing is coupled between the transducer and the probe.Type: ApplicationFiled: September 12, 2002Publication date: January 23, 2003Inventor: Mario E. Bran
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Patent number: 6463677Abstract: Method and device for moisture profiling of fibrous material web to be dried in machines for manufacturing and/or refining of fibrous material web. Method includes subjecting fibrous material web to electromagnetic waves in the form of high-frequency waves. Device includes a fibrous material web support that supports travel of fibrous material web and a rotating cylinder. Rotating cylinder receives fibrous material web from fibrous material web support, and fibrous material web support is arranged outside fibrous material web in relation to the surface of the rotating cylinder. At least one electromagnetic wave transmitter is also included.Type: GrantFiled: September 18, 2001Date of Patent: October 15, 2002Assignee: Voith Sulzer Papiertechnik Patent GmbHInventors: Robert Wolf, Markus Oechsle, Wolfgang Mayer, Roland Mayer, Frank Wegehaupt
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Patent number: 6449871Abstract: A process chamber 25 for processing a semiconductor substrate, comprises a support for supporting a substrate 50. A gas distributor 90 provided for introducing process gas into the chamber 25, comprises a gas nozzle for injecting process gas at an inclined angle relative to a plane of the substrate 50, into the chamber 25. Optionally, a gas flow controller 100 controls and pulses the flow of process gas through one or more gas nozzles 140. An exhaust is used to exhaust the process gas from the chamber 25.Type: GrantFiled: September 8, 2000Date of Patent: September 17, 2002Assignee: Applied Materials Inc.Inventors: Arnold Kholodenko, Dmitry Lubomirsky, Guang-Jye Shiau, Peter K. Loewenhardt, Shamouil Shamouilian
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Patent number: 6425190Abstract: A method and device for moisture profiling of a fibrous material web to be dried in machines for manufacturing and/or refining this web that includes subjecting the fibrous material web to electromagnetic waves in the form of microwaves and/or high-frequency waves.Type: GrantFiled: September 10, 1999Date of Patent: July 30, 2002Assignee: Voith Sulzer Papiertechnik Patent GmbHInventors: Robert Wolf, Markus Oechsle, Wolfgang Mayer, Roland Mayer, Frank Wegehaupt
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Patent number: 6423955Abstract: A method and apparatus for dielectric drying is disclosed wherein a load to be heated positioned on a carrier the bottom of which provides a secondary electrode is moved with the carrier a dielectric heating chamber having a primary electrode positioned above load when said load on said carrier is moved into an operative position in the chamber. The carrier and load are elevated into heating position and this movement simultaneously connects the secondary electrode to ground, so that when high frequency power is applied to the primary electrode the circuit is made to dielectrically heat the load.Type: GrantFiled: July 13, 2001Date of Patent: July 23, 2002Assignee: Heatwave Technologies Inc.Inventors: Glenn Craig Blaker, Terry Albert Enegren, Yiu Kwan (Eugene) Ho, Scott Ronald Spencer
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Patent number: 6401356Abstract: A method of drying veneer sheets by continuously shingling discrete wood veneer-sheets to form a layup where the leading edges of adjacent sheets are offset by a distance X with the lower, veneer sheet leading in the direction of movement the one there above and continuously feeding the so formed layup in the direction of movement into a drier where the veneer sheets while still in the layup are dried. The dried veneer sheets are then separated into discreet dried veneer sheets and are thereafter individually tested.Type: GrantFiled: July 18, 2001Date of Patent: June 11, 2002Assignee: Weyerhaeuser CompanyInventors: Mark Trelawny Churchland, Robert Leeson Pike, Norbert Kott
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Patent number: 6346693Abstract: A grain containment vessel equipped with one or more antennas and a vapor extraction system is disclosed. An electromagnetic heating pattern is established throughout the grain volume elevating the bulk temperature, while an air flow is applied throughout the grain volume. The electromagnetic energy desorbs the water and increases the vapor pressure and the air flow carries the heat and water from the containment vessel. A controlled amount of electromagnetic energy is introduced into the grain volume to reduce or eliminate fungus infestation and increase insect mortality.Type: GrantFiled: December 14, 1999Date of Patent: February 12, 2002Assignee: KAI Technologies, Inc.Inventor: Raymond S. Kasevich
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Patent number: 6243968Abstract: A turning device (8) for sludge and deposits (3) is proposed which moves along differing paths spread out on a floor (6), through the sludge or deposit (3). The turning device (8) can be used in a solar drier for sewage sludge or other deposits.Type: GrantFiled: November 17, 1999Date of Patent: June 12, 2001Inventors: Tilo Conrad, Markus Bux
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Patent number: 6205676Abstract: An apparatus for removing particles from a surface of an article, such as a semiconductor wafer in a clean room. The particles are supplied with an electric charge. Subsequently, an ultrasonic wave or a gas stream is applied onto the surface of the article while an electric field is applied for driving away the electrically charged particles from the surface, thereby removing particles having a dimension smaller than 1 micrometer from the surface. The presence of a collecting member allows the removal of resulting, floating particles.Type: GrantFiled: August 10, 1998Date of Patent: March 27, 2001Assignee: Ebara CorporationInventors: Toshiaki Fujii, Kikuo Okuyama, Manabu Shimada
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Drying process for woven fabric intended for use as a reinforcing laminate in printed circuit boards
Patent number: 6192599Abstract: A process for the drying of woven glass fabric to be used in a reinforcing laminate in sensitive electronic equipment is disclosed. The process adopts a drying technique of utilizing dielectric or radio frequency heating which results in a cleaner product.Type: GrantFiled: September 23, 1998Date of Patent: February 27, 2001Assignee: BGF Industries, Inc.Inventors: Michael I. Bryant, Charles E. Jones -
Patent number: 6185839Abstract: A process chamber 25 for processing a semiconductor substrate, comprises a support for supporting a substrate 50. A gas distributor 90 provided for introducing process gas into the chamber 25, comprises a gas nozzle for injecting process gas at an inclined angle relative to a plane of the substrate 50, into the chamber 25. Optionally, a gas flow controller 100 controls and pulses the flow of process gas through one or more gas nozzles 140. An exhaust is used to exhaust the process gas from the chamber 25.Type: GrantFiled: May 28, 1998Date of Patent: February 13, 2001Assignee: Applied Materials, Inc.Inventors: Arnold Kholodenko, Dmitry Lubomirsky, Guang-Jye Shiau, Peter K. Loewenhardt, Shamouil Shamouilian
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Patent number: 6079120Abstract: The invention relates to a method for making the drying finely divided materials, more effective in a suction drier provided with a fine porous suction surface, where the radii of the fine pores of the suction surface are essentially within the range of 0.5-2 micrometers, and in which method, of a slurry containing liquid and solids there is made a filter cake (2,12,22) onto a fine porous liquid suction surface constituting the filter surface of the filter medium (1,11,21), According to the invention, the filter cake (2,12,22) and an oscillator (6,15,25) are arranged, in relation to each other, so that in between the filter cake (2,12,22) and the oscillator (6,15,25), there is generated an acoustic field by virtue of a mechanical contact between the filter cake (2,12,22) and the oscillator (6,15,25) or a structural element (7,16,26) connected to the oscillator.Type: GrantFiled: June 4, 1999Date of Patent: June 27, 2000Assignee: Outokumpu OyjInventors: Bjarne Ekberg, Goran Norrg.ang.rd, Juan A. Gallego Juarez, German Rodriguez Corral, Luis Elvira Segura
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Patent number: 6063751Abstract: A process for preparing a low density detergent composition is disclosed. The process includes the steps of agglomerating a detergent surfactant paste and dry starting detergent material in a high speed mixer to obtain detergent agglomerates wherein the detergent agglomerates include at least 3% by weight water and dielectrically heating the detergent agglomerates so as to form the detergent composition having a density of below 600 g/l.Type: GrantFiled: April 5, 1999Date of Patent: May 16, 2000Assignee: The Procter & Gamble CompanyInventors: Paul Amaat France, Larry Rudolph Genskow, Wayne Edward Beimesch
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Patent number: 6029368Abstract: The present invention is directed to a method for removal of VOCs from wood products prior to drying the wood products. The method of the invention includes the steps of providing a chamber having an opening for receiving wood and loading the chamber with green wood. The wood is loaded to an extent sufficient to provide a limited headspace in the chamber. The chamber is then closed and the wood is heated in the chamber for a time and at a temperature sufficient to saturate the headspace with moisture and to substantially transfer VOCs from the wood product to the moisture in the headspace.Type: GrantFiled: December 15, 1997Date of Patent: February 29, 2000Inventors: Sujit Banerjee, James Robert Boerner, Wei Su
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Patent number: 5981022Abstract: A method for drying and/or curing a traveling web including a RF generating means for delivering RF through field and RF stray field to the web to heat the web, air bars to direct air flow to the web for cooling to facilitate emission of moisture therefrom and to avoid blistering due to overheating, an RF field generator to reflect RF energy to the web, and a control system to monitor and to control air temperature and/or flow, RF field strength, and/or web temperature to maintain a balance between heating and cooling to obtain efficient high speed drying while avoiding damage to the web.Type: GrantFiled: December 11, 1996Date of Patent: November 9, 1999Assignee: Avery Dennison CorporationInventors: Kyung Min, John E. Johansen
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Patent number: 5977532Abstract: According to a method for the heating of dielectric materials, the heat generation is done by oscillating electromagnetic radiation of one or more frequencies within the frequency range 300 kHz-299 MHz, preferably within the frequency range 1 MHz-299 MHz and best of all within the frequency range 12 MHz-200 MHz. In an apparatus for the heating of dielectric materials, preferably of organic nature, the heat is generated by oscillating electromagnetic radiation within the frequency range 300 kHz-299 MHz. The apparatus comprises a chamber (10) consisting of an upper wall (12), a bottom wall (11) and side walls (13, 14, 15, 16) made of electric conducting materials, which walls together with at least one generator (19) are connected to a common reference potential at which the generator (19) is arranged to feed at least one with the chamber cooperating antenna (17) in order to get the electromagnetic radiation in this chamber.Type: GrantFiled: September 6, 1996Date of Patent: November 2, 1999Assignee: Antrad System ABInventor: Lars Sven Erling Ekemar
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Patent number: 5813134Abstract: A radio frequency (RF) assisted flotation air bar dryer apparatus and method for drying and/or curing a traveling web includes RF generating means for delivering RF through field and RF stray field to the web to heat the web, air bars to direct air flow to the web for cooling to facilitate emission of moisture therefrom and to avoid blistering due to overheating, an RF field reflector to reflect RF energy to the web, and a control system to monitor and to control air temperature and/or flow, RF field strength, and/or web temperature to maintain a balance between heating and cooling to obtain efficient high speed drying while avoid damage to the web.Type: GrantFiled: December 11, 1996Date of Patent: September 29, 1998Assignee: Avery Dennison CorporationInventors: Kyung Min, John E. Johansen
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Patent number: 5659972Abstract: A radio frequency (RF) assisted flotation air bar dryer apparatus and method for drying and/or curing a traveling web includes RF generating means for delivering RF through field and RF stray field to the web to heat the web, air bars to direct air flow to the web for cooling to facilitate emission of moisture therefrom and to avoid blistering due to overheating, an RF field reflector to reflect RF energy to the web, and a control system to monitor and to control air temperature and/or flow, RF field strength, and/or web temperature to maintain a balance between heating and cooling to obtain efficient high speed drying while avoid damage to the web.Type: GrantFiled: October 6, 1995Date of Patent: August 26, 1997Assignee: Avery Dennison CorporationInventors: Kyung Min, John E. Johansen
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Patent number: 5598641Abstract: A raw sewage disposal apparatus for evaporating and drying raw sewage by heating. An evaporation container has a closed bottom portion and an opened upper portion for containing raw sewage thereon. A rotary holding structure holds an upper end of the evaporation container so as to permit horizontal rotation thereof. A covering supports the rotary holding structure and closes the opened upper portion of the evaporation container from the atmosphere. A frame capable of hanging the evaporation container supports the covering substantially horizontally. A driving device is provided for rotating the evaporation container, and an electromagnetic heating means is disposed close to a lower surface of the evaporation container and generates a high-frequency electromagnetic wave which is supplied to the evaporation container.Type: GrantFiled: August 16, 1995Date of Patent: February 4, 1997Assignee: Nikken CorporationInventor: Mitsuhiro Kishi
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Patent number: 5575082Abstract: A disposal apparatus according to a first aspect comprises an evaporation pipe communicating with a container for discharging vapor evaporated from raw sewage therein. A catalyst box accommodates a catalyst and communicates with the evaporation pipe. An ejector connects to the catalyst box for drawing air therefrom. A hot-air blower connects upstream to the catalyst box for heating flowing air, and an air supply unit supplies air to the ejector and the hot-air blower. A bypass pipe communicates between the ejector and the container. The disposal apparatus according to a second aspect comprises a heat-resistant airtight container for raw sewage, and an induction heating device disposed under the container. The heating device has a coil for generating a high-frequency electromagnetic wave to heat the container by induction. A rotatable stirrer and heat-holding balls are contained in the container. A stool communicates with the container through a valve mechanism.Type: GrantFiled: April 20, 1994Date of Patent: November 19, 1996Assignee: Nikken CorporationInventor: Mitsuhiro Kishi
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Patent number: 5575083Abstract: This invention relates to a compact vacuum dryer for quickly and economically drying objects such as grain, industrial raw materials and thrash. The vacuum dryer includes a combined upper and lower chamber for accommodating the drying objects. A vacuum pump is connected to the upper chamber for drawing in air for creating the vacuum within the system. A direct heating apparatus is provided at one side of the combination of the upper and lower chambers to directly heat the drying objects. A dielectric heating apparatus indirectly heats the drying objects in combination with direct heating apparatus. A moisture removing apparatus is provided along a discharge passage between the upper chamber and the vacuum pump for preventing the vacuum pump from drawing in moisture from the chamber which may damage or disable the pump.Type: GrantFiled: July 5, 1994Date of Patent: November 19, 1996Assignee: Goldstar Co., Ltd.Inventors: In S. Lee, Hyeong K. Lee
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Patent number: 5517768Abstract: Apparatus for finishing of workpieces comprising: a beam generator for providing a line of sight; voltage activating beam impinging along the line of sight on a workpiece surface to be finished, thereby causing the workpiece surface to be charged with electrical charges having a first polarity; an electrostatic spray gun operative to direct onto the workpiece surface which is charged with electrical charges having the first polarity, a particle spray which is charged with electrical charges of a second polarity; and a high energy source which dries said workpiece sprayed by said particle spray by directing a substantially defined beam of energy onto a surface of said workpiece.Type: GrantFiled: May 31, 1994Date of Patent: May 21, 1996Inventor: Zvi Aviv
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Patent number: 5406058Abstract: The present invention features a process and apparatus for drying ceramic structures in an electromagnetic energy field. The apparatus comprises a cradle or setter for supporting the ceramic structure which is made of a light-weight, tough, temperature-resistant material which does not absorb energy in the radio frequency range, for example, fiberglass reinforced polyester. The setter is also characterized by many apertures to allow passage of air or moisture, and is designed to avoid trapped air volumes.Type: GrantFiled: November 30, 1993Date of Patent: April 11, 1995Assignee: Corning IncorporatedInventor: G. Daniel Lipp
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Patent number: 5388345Abstract: A method of drying plastically deformable metal structures using high frequency energy in a frequency range greater than 10 MHz. The highly efficient drying of the invention is accomplished by shielding the structure from the electrodes using a material whose dielectric constant is greater than that of air.Type: GrantFiled: November 4, 1993Date of Patent: February 14, 1995Assignee: Corning IncorporatedInventors: Kevin R. Brundage, Tudor C. Gheorghiu, Victor F. Janas, Vincent Kwapong, Christopher J. Malarkey