Patents by Inventor Ronald O. Petersen
Ronald O. Petersen 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).
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Patent number: 8363384Abstract: Metal getter systems for use in electronic devices are provided. The getter systems taught herein include compartmentalized, metal getter systems for use in electrolytic environments present within electrolytic devices, such as electrolytic capacitors, without the problem of getter passivation. Such systems (50) can include a composite getter system (10) inserted into a central portion of an electrolytic capacitor (50) having a container (51), electrodes (52), and electrical contacts (54,54?).Type: GrantFiled: March 13, 2009Date of Patent: January 29, 2013Assignee: Saes Getters S.p.A.Inventors: Ronald O. Petersen, Richard C. Kullberg, Luca Toia, Sergio Rondena, Johnny Mio Bertolo
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Patent number: 7560820Abstract: A technique for controlling an atmosphere within an enclosure involves providing a getter within the atmosphere of the enclosure. An LED manufactured according to the technique may include a getter within an enclosed volume of the LED device.Type: GrantFiled: April 12, 2005Date of Patent: July 14, 2009Assignee: SAES Getters S.p.A.Inventors: Marco Amiotti, Ronald O. Petersen
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Patent number: 6149484Abstract: A field emission display (400) includes a cathode plate (410), an anode plate (430), and a mechanical support/getter assembly (300) being disposed between the cathode plate (410) and the anode plate (430). The mechanical support/getter assembly (300) includes a unitary spacer/frame assembly (310) made from a photosensitive glass. A method for fabricating the mechanical support/getter assembly (300) includes the steps of: selectively exposing inter-spacer regions (110) and a getter frame region (120) of a layer (100) of the photosensitive glass to UV radiation, heating the layer (100) to crystallize the UV-exposed regions, and removing the crystallized inter-spacer regions (110) and partially removing the crystallized getter frame regions by contacting the layer (100) with an acid, thereby forming spacer ribs (314) and a getter land (322). The method further includes providing a getter frame (320) on the spacer land (322).Type: GrantFiled: June 5, 1998Date of Patent: November 21, 2000Assignee: Motorola, Inc.Inventors: Craig Amrine, Clifford L. Anderson, Ronald O. Petersen
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Patent number: 5945780Abstract: A field emission display (200) includes a cathode plate (202); a substrate (102) opposing the cathode plate (202); a conductive matrix (104) disposed on the substrate (102) and having via walls (103) defining a plurality of phosphor vias (105); a phosphor (106, 108, 110) disposed within each of the phosphor vias (105); and a gas-adsorption material distributed within the conductive matrix (104). A method for fabricating the field emission display (200) includes the steps of silk-screening onto the substrate (102) a screenable suspension, which is made from a glass, a metal, a gas-adsorption material, and a photo-sensitive material, to form a film; photo-patterning the film to form a phosphor via (105); depositing a phosphor material into the phosphor via (105) to form an anode plate (100); and affixing the cathode plate (202) to the anode plate (100).Type: GrantFiled: June 30, 1997Date of Patent: August 31, 1999Assignee: Motorola, Inc.Inventors: Arthur J. Ingle, Charles Rowell, Babu Chalamala, Ronald O. Petersen, Craig Amrine, Matthew Stainer
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Patent number: 5894193Abstract: A field emission display (400) includes a cathode plate (410), an anode plate (430), and a mechanical support/getter assembly (300) being disposed between the cathode plate (410) and the anode plate (430). The mechanical support/getter assembly (300) includes a unitary spacer-frame assembly (310) made from a photosensitive glass. A method for fabricating the mechanical support/getter assembly (300) includes the steps of: selectively exposing inter-spacer regions (110) and a getter frame region (120) of a layer (100) of the photosensitive glass to UV radiation, heating the layer (100) to crystallize the UV-exposed regions, and removing the crystallized inter-spacer regions (110) and partially removing the crystallized getter frame regions by contacting the layer (100) with an acid, thereby forming spacer ribs (314) and a getter land (322). The method further includes providing a getter frame (320) on the spacer land (322).Type: GrantFiled: March 5, 1997Date of Patent: April 13, 1999Assignee: Motorola Inc.Inventors: Craig Amrine, Clifford L. Anderson, Ronald O. Petersen
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Patent number: 5844361Abstract: A field emission display (100, FIG. 1) having a stabilized phosphor (110, FIG. 1) includes a cathode plate (130, FIG. 1) having a plurality of field emitters (160, FIG. 1), an anode plate (120, FIG. 1) opposing the cathode plate (130, FIG. 1), and a stabilized sulfide phosphor disposed on the anode plate (120, FIG. 1) to receive electrons from the plurality of field emitters (160, FIG. 1). The stabilized sulfide phosphor includes a sulfide phosphor core containing vacuum-unstable sulfur and a stabilized surface made from a more thermodynamically stable material, which is more thermodynamically stable against outgassing than the vacuum-unstable sulfur of the sulfide phosphor core. The stabilized phosphor (110, FIG.Type: GrantFiled: December 13, 1996Date of Patent: December 1, 1998Assignee: Motorola, Inc.Inventors: Ronald O. Petersen, Troy A. Trottier
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Patent number: 5789848Abstract: A field emission display (100, 200, 300) and a method of making the same are disclosed. The field emission display (100, 200, 300) includes an anode (110, 210, 310) having a plurality of cathodoluminescent deposits (120, 220, 320), a back plate (185, 285, 385) including a cathode (130, 230, 330) having a plurality of field emitters (140, 240, 340) and being affixed to a cathode reinforcement member (170, 270, 370), and a plurality of side members (150, 250, 350) disposed between the anode (110, 210, 310) and the cathode (130, 230,330) and hermetically affixed thereto. The thicknesses of the anode (110, 210, 310) and the back plate (185, 285, 385) are sufficient to provide the structural support necessary to maintain the mechanical integrity of the field emission display (100, 200, 300).Type: GrantFiled: August 2, 1996Date of Patent: August 4, 1998Assignee: Motorola, Inc.Inventors: Lawrence N. Dworsky, Dean Barker, James E. Jaskie, Ronald O. Petersen, Robert T. Smith
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Patent number: 5747100Abstract: A phosphor (200) for low voltage applications including a plurality of light-emitting particles (10) being made from a UV-excitable light-emitting phosphor, a diffusion barrier (25) being formed as a film on the light-emitting particles (10), and a coating (30) of an electron-excitable UV-emitting material being formed on the diffusion barrier (25). A method for making a low voltage phosphor including the steps of (i) providing a UV-excitable light-emitting phosphor (ii) forming a diffusion barrier on the UV-excitable light-emitting phosphor via sol-gel techniques (iii) forming, via sol-gel techniques, a film of an electron-excitable UV-emitting material on the diffusion barrier.Type: GrantFiled: January 13, 1997Date of Patent: May 5, 1998Assignee: Motorola, Inc.Inventor: Ronald O. Petersen
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Patent number: 5731660Abstract: A display spacer structure includes a frame with side members joined together to define a central opening. The side members have recessed portions positioned outside of, and in communication with, the central opening with getter material therein. Spaced apart grooves are formed in each of an opposed pair of the side members, and the ends of a plurality of spacers are fixed in the grooves. The spacers extend across the central opening to define a plurality of separate compartments which are in communication with the recessed portions so as to provide a continuous fluid phase throughout all the separate compartments.Type: GrantFiled: December 18, 1995Date of Patent: March 24, 1998Assignee: Motorola, Inc.Inventors: James E. Jaskie, Jeffery A. Whalin, Ronald O. Petersen
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Patent number: 5688708Abstract: A ultra-high vacuum field emission display (100, 200) is disclosed including an anode (102, 202), a cathode (106, 206), side members (112, 212), a first non-evaporable getter material (120, 220) which is activated during the sealing and evacuation of the package, and a second getter material (122, 222) which is activated during the normal operation of the ultra-high vacuum field emission display (100, 200). The second getter material (122, 222) is activated by subsequent heating provided by radio-frequency radiation, resistive heating, or a laser.Type: GrantFiled: June 24, 1996Date of Patent: November 18, 1997Assignee: MotorolaInventors: Yumiko Kato, Ronald O. Petersen
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Patent number: 5667724Abstract: A phosphor for low voltage applications including a plurality of light-emitting particles being made from a UV-excitable light-emitting phosphor, a diffusion barrier being formed as a film on the light-emitting particles, and a coating of an electron-excitable UV-emitting material being formed on the diffusion barrier. A method for making a low voltage phosphor including the steps of (i) providing a UV-excitable light-emitting phosphor (ii) forming a diffusion barrier on the UV-excitable light-emitting phosphor via sol-gel techniques (iii) forming, via sol-gel techniques, a film of an electron-excitable UV-emitting material on the diffusion barrier.Type: GrantFiled: May 13, 1996Date of Patent: September 16, 1997Assignee: MotorolaInventor: Ronald O. Petersen
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Patent number: 4949010Abstract: X-ray attenuating polycrystalline ceramic materials having at least 20 wt. percent cerium oxide are disclosed. In addition, the materials can include one or more X-ray attenuating substances selected from the group including compounds of strontium, zirconium, yttrium, niobium, molybdenum, neodymium and tungsten. The materials can be formed in strong, non-porous bodies such as cathode ray tube funnels.Type: GrantFiled: January 11, 1988Date of Patent: August 14, 1990Assignee: Tektronix, Inc.Inventors: Ronald O. Petersen, James L. McAlpin
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Patent number: 4804885Abstract: X-ray attenuating ceramic materials having at least one substance selected from the group including compounds of strontium, zirconium, yttrium, niobium, molybdenum, neodymium and tungsten are disclosed. A zinc compound can be used for fluxing and X-ray attenuation in certain ceramic materials. The materials can be formed into strong, non-porous bodies such as cathode ray tube funnels. Such materials include forsteritic porcelains manufactured from batches containing strontium zirconate. Other X-ray attenuating ceramics contain a mixture of X-ray attenuating substances, including a compound of barium.Type: GrantFiled: August 20, 1984Date of Patent: February 14, 1989Assignee: Tektronix, Inc.Inventors: Ronald O. Petersen, James L. McAlpin
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Patent number: 4751427Abstract: A highly efficient, AC-excited, blue light-emitting phosphor for solid-state thin-film electro-luminescent (TFEL) devices is comprised of strontium sulphide (SrS) host material doped with cerium fluoride (CeF.sub.3) acting as an emitter providing a source of photons. The blue SrS:CeF.sub.3 phosphor is about one hundred times brighter than the brightest zinc sulphide/thulium fluoride (ZnS:TmF.sub.3) blue phosphor heretofore known. To increase brightness level, at some loss of energy efficiency, electron-injection layers of zinc sulfide (ZnS) are placed on either side of the SrS:CeF.sub.3 layer in the TFEL device.Type: GrantFiled: July 16, 1986Date of Patent: June 14, 1988Assignee: Planar Systems, Inc.Inventors: William A. Barrow, Christopher N. King, Richard E. Coovert, Ronald O. Petersen