Patents by Inventor Richard C. Carlson
Richard C. Carlson 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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Publication number: 20110174628Abstract: A cathodic member for electrochemical cells used in hypochlorite production comprises a zirconium plate coated with a zirconium oxide layer, which is particularly suitable for minimising the decomposition of the hypochlorite product while ensuring a prolonged lifetime. The coated zirconium plate can be used as the cathodic plate in a monopolar cell, or can be welded to a titanium plate for use in a bipolar configuration.Type: ApplicationFiled: March 28, 2011Publication date: July 21, 2011Applicant: Industrie De Nora S.p.A.Inventors: Carl W. Brown, JR., Richard C. Carlson, Kenneth L. Hardee
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Publication number: 20100044219Abstract: The present invention relates to an electrocatalytic coating and an electrode having the coating thereon, wherein the coating is a mixed metal oxide coating, preferably ruthenium, titanium and tin or antimony oxides. The coating uses water as a solvent that provides for a smoother surface than alcohol based solvents. The electrocatalytic coating can be used especially as an anode component of an electrolysis cell and in particular a cell for the electrolysis of aqueous chlor-alkali solutions.Type: ApplicationFiled: October 29, 2009Publication date: February 25, 2010Applicant: Eltech Systems CorporationInventors: Richard C. Carlson, Kenneth L. Hardee, Dino F. DiFranco, Michael S. Moats
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Patent number: 7632535Abstract: The present invention relates to an electrocatalytic coating and an electrode having the coating thereon, wherein the coating is a mixed metal oxide coating, preferably ruthenium, titanium and tin or antimony oxides. The coating uses water as a solvent that provides for a smoother surface than alcohol based solvents. The electrocatalytic coating can be used especially as an anode component of an electrolysis cell and in particular a cell for the electrolysis of aqueous chlor-alkali solutions.Type: GrantFiled: May 7, 2004Date of Patent: December 15, 2009Assignee: De Nora Tech, Inc.Inventors: Richard C. Carlson, Kenneth L. Hardee, Dino F. DiFranco, Michael S. Moats
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Patent number: 6309523Abstract: An electrode is disclosed having a coating on part of the electrode, e.g., a front face, comprising the oxides of tin, antimony, at least one platinum group metal and at least one valve metal. Another part of the electrode, such as a back face, has a coating comprising the oxides of at least one valve metal and at least one platinum group metal. The electrode can be generally plate-shaped and most desirably has at least one chamfered corner. The electrode is particularly useful in a cell wherein brine electrolyte is electrolyzed to prepare a disinfectant solution containing hypochlorite. The disinfectant solution can be especially serviceable, such as in maritime application, for treating water, e.g., freshwater as represented by desalinated water.Type: GrantFiled: October 28, 1999Date of Patent: October 30, 2001Assignee: Eltech Systems CorporationInventors: Albert R. Prasnikar, Richard C. Carlson, Richard J. Coin, Lynne M. Ernes, Catherine M. Lezan
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Patent number: 6071570Abstract: A method of preparing electrodes is now described, which electrodes have enhanced adhesion of subsequently applied coatings combined with excellent coating service life. In the method, a substrate metal, such as a valve metal as represented by titanium, is provided with a highly desirable rough surface characteristic for subsequent coating application. This can be achieved by various operations including etching to ensure a roughened surface morphology. In subsequent operations, a barrier layer is provided on the surface of enhanced morphology. This may be achieved by operations including heating, as well as including thermal decomposition of a layer precursor. Subsequent coatings provide enhanced lifetime even in the most rugged commercial environments.Type: GrantFiled: August 27, 1997Date of Patent: June 6, 2000Assignee: Eltech Systems CorporationInventors: Kenneth L. Hardee, Lynne M. Ernes, Richard C. Carlson
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Patent number: 5989396Abstract: An electrode is disclosed having a coating on part of the electrode, e.g., a front face, comprising the oxides of tin, antimony, at least one platinum group metal and at least one valve metal. Another part of the electrode, such as a back face, has a coating comprising the oxides of at least one valve metal and at least one platinum group metal. The electrode can be generally plate-shaped and most desirably has at least one chamfered corner. The electrode is particularly useful in a cell wherein brine electrolyte is electrolyzed to prepare a disinfectant solution containing hypochlorite. The disinfectant solution can be especially serviceable, such as in maritime application, for treating water, e.g., freshwater as represented by desalinated water.Type: GrantFiled: April 1, 1998Date of Patent: November 23, 1999Assignee: ELTECH Systems CorporationInventors: Albert R. Prasnikar, Richard C. Carlson, Richard J. Coin, Lynne M. Ernes, Thomas A. Mitchell, Catherine M. Lezan
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Patent number: 5923032Abstract: An improved optical encoder with a simplified construction for reliable component alignment and enhanced resolution is disclosed. The encoder includes a housing with locating points, such as studs and shelves, integrally formed on inner surfaces of the housing. The locating points reliably fix the X, Y and Z axis orientation between a light detector and light source assembly. The light source assembly preferably comprises two light detectors on a single board to increase resolution. Additional features of the invention include a sealed housing and a code wheel having two concentric tracks of transmissive slots that are circumferentially offset from each other and an external cable strain relief assembly.Type: GrantFiled: May 2, 1997Date of Patent: July 13, 1999Assignee: Oak Industries Inc.Inventors: Richard C. Carlson, Edward J. Talbert
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Patent number: 5672394Abstract: A method of preparing electrodes is now described, which electrodes have enhanced adhesion of subsequently applied coatings combined with excellent coating service life. In the method, a substrate metal, such as a valve metal as represented by titanium, is provided with a highly desirable rough surface characteristic for subsequent coating application. This can be achieved by various operations including etching to ensure a roughened surface morphology. In subsequent operations, a barrier layer is provided on the surface of enhanced morphology. This may be achieved by operations including heating, as well as including thermal decomposition of a layer precursor. Subsequent coatings provide enhanced lifetime even in the most rugged commercial environments.Type: GrantFiled: August 2, 1996Date of Patent: September 30, 1997Assignee: Eltech Systems CorporationInventors: Kenneth L. Hardee, Lynne M. Ernes, Richard C. Carlson
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Patent number: 5578176Abstract: A method of preparing electrodes is now described, which electrodes have enhanced adhesion of subsequently applied coatings combined with excellent coating service life. In the method a substrate metal, such as a valve metal as represented by titanium, is provided with a highly desirable rough surface characteristic for subsequent coating application. This can be achieved by various operations including etching and melt spray application of metal or ceramic oxide to ensure a roughened surface morphology. In subsequent operations: a barrier layer is provided on the surface of enhanced morphology. This may be achieved by operations including heating, as well as including thermal decomposition of a layer precursor. Subsequent coatings provide enhanced lifetime even in the most rugged commercial environments.Type: GrantFiled: May 15, 1995Date of Patent: November 26, 1996Assignee: Eltech Systems CorporationInventors: Kenneth L. Hardee, Lynne M. Ernes, Richard C. Carlson
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Patent number: 5545262Abstract: A metal surface is now described having enhanced adhesion of subsequently applied coatings. The substrate metal of the article, such as a valve metal as represented by titanium, is provided with a highly desirable surface characteristic for subsequent coating application. This can be initiated by selection of a metal of desirable metallurgy and heat history, including prior heat treatment to provide surface grain boundaries which may be most readily etched. In subsequent etching operation, the surface is made to exhibit well defined, three dimensional grains with deep grain boundaries. Subsequently applied coatings, by penetrating into the etched intergranular valleys, are desirably locked onto the metal substrate surface and provide enhanced lifetime even in rugged commercial environments.Type: GrantFiled: November 16, 1994Date of Patent: August 13, 1996Assignee: ELTECH Systems CorporationInventors: Kenneth L. Hardee, Lynne M. Ernes, Richard C. Carlson, David E. Thomas
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Patent number: 5435896Abstract: A metal surface, useful as an electrode in an electrolytic cell, is now described having enhanced adhesion of subsequently applied coatings combined with excellent coating service life. The substrate metal of the electrode, such as a valve metal as represented by titanium, is provided with a highly desirable rough surface characteristic for subsequent coating application. This can be achieved by various operations including etching and melt spray application of metal or ceramic oxide to ensure a roughened surface morphology. Usually in subsequent operations, a barrier layer is provided on the surface of enhanced morphology. This may be achieved by operations including heating, as well as including thermal decomposition of a layer precursor. Subsequent coatings provide enhanced lifetime even in the most rugged commercial environments.Type: GrantFiled: March 25, 1994Date of Patent: July 25, 1995Assignee: ELTECH Systems CorporationInventors: Kenneth L. Hardee, Lynne M. Ernes, Richard C. Carlson
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Patent number: 5366598Abstract: A metal surface is now described having enhanced adhesion of subsequently applied coatings. The substrate metal of the article, such as a valve metal as represented by titanium, is provided with a highly desirable surface characteristic for subsequent coating application. This can be initiated by selection of a metal of desirable metallurgy and heat history, including prior heat treatment to provide surface grain boundaries which may be most readily etched. In subsequent etching operation, the surface is made to exhibit well defined, three dimensional grains with deep grain boundaries. Subsequently applied coatings, by penetrating into the etched intergranular valleys, are desirably locked onto the metal substrate surface and provide enhanced lifetime even in rugged commercial environments.Type: GrantFiled: October 7, 1993Date of Patent: November 22, 1994Assignee: Eltech Systems CorporationInventors: Kenneth L. Hardee, Lynne M. Ernes, Richard C. Carlson, David E. Thomas
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Patent number: 5324407Abstract: A metal surface is now described having enhanced adhesion of subsequently applied coatings. The substrate metal of the article, such as a valve metal as represented by titanium, is provided with a highly desirable surface characteristic for subsequent coating application. This can be achieved by a plasma sprayed coating of well defined surface morphology, the plasma spraying being with one or more metals usually valve metals. The metal of the coating may be the same or different from the metal of the substrate. Subsequently applied coatings, by penetrating into the coating of well defined surface morphology, and desirably locked onto the resulting metal article an provide enhanced lifetime even in rugged commercial environments.Type: GrantFiled: February 26, 1993Date of Patent: June 28, 1994Assignee: ELTECH Systems CorporationInventors: Lynne M. Ernes, Richard C. Carlson, Kenneth L. Hardee
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Patent number: 5314601Abstract: A metal surface is now described having enhanced adhesion of subsequently applied coatings combined with excellent coating service life. The substrate metal of the article, such as a valve metal as represented by titanium, is provided with a highly desirable rough surface characteristic for subsequent coating application. This can be achieved by various operations including etching and melt spray application of metal or ceramic oxide to ensure a roughened surface morphology. Usually in subsequent operations, a barrier layer is provided on the surface of enhanced morphology. This may be achieved by operations including heating, as well as including thermal decomposition of a layer precursor. Subsequent coatings provide enhanced lifetime even in the most rugged commercial environments.Type: GrantFiled: June 25, 1992Date of Patent: May 24, 1994Assignee: Eltech Systems CorporationInventors: Kenneth L. Hardee, Lynne M. Ernes, Richard C. Carlson
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Patent number: 5262040Abstract: A metal surface is now described having enhanced adhesion of subsequently applied coatings. The substrate metal of the article, such as a valve metal as represented by titanium, is provided with a highly desirable surface characteristic for subsequent coating application. This can be initiated by selection of a metal of desirable metallurgy and heat history, including prior heat treatment to provide surface grain boundaries which may be most readily etched. In subsequent etching operation, the surface is made to exhibit well defined, three dimensional grains with deep grain boundaries. Subsequently applied coatings, by penetrating into the etched intergranular valleys, are desirably locked onto the metal substrate surface and provide enhanced lifetime even in rugged commercial environments.Type: GrantFiled: April 18, 1991Date of Patent: November 16, 1993Assignee: ELTECH Systems CorporationInventors: Kenneth L. Hardee, Lynne M. Ernes, Richard C. Carlson
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Patent number: 5230780Abstract: A coating is now disclosed which is especially serviceable as an improved electrocatalytic coating for an electrode. The coating is a crystalline coating of mixed oxides. The oxides are of iridium, ruthenium and titanium, in very specially defined proportions. When the coating is present on an electrically conductive metal substrate that can serve as an electrode, such electrode has, in combination, the characteristics of reduced oxygen evolution in a membrane cell, low chlorine electrode potentials, plus reduced coating weight loss in a caustic environment.Type: GrantFiled: February 21, 1992Date of Patent: July 27, 1993Assignee: Eltech Systems CorporationInventors: Richard C. Carlson, Kenneth L. Hardee
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Patent number: 5167788Abstract: A metal surface is now described having enhanced adhesion of subsequently applied coatings. The substrate metal of the article, such as a valve metal as represented by titanium, is provided with a highly desirable surface characteristic for subsequent coating application. This can be initiated by selection of a metal of desirable metallurgy and heat history, including prior heat treatment to provide surface grain boundaries which may be most readily etched. In subsequent etching operation, the surface is made to exhibit well defined, three dimensional grains with deep grain boundaries. Subsequently applied coatings, by penetrating into the etched intergranular valleys, are desirably locked onto the metal substrate surface and provide enhanced lifetime even in rugged commercial environments.Type: GrantFiled: April 18, 1991Date of Patent: December 1, 1992Assignee: Eltech Systems CorporationInventors: Kenneth L. Hardee, Lynne M. Ernes, Richard C. Carlson, David E. Thomas
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Patent number: 5141563Abstract: A method is now utilized for stripping costly electrocatalytic coatings from valve metal substrates while maintaining excellent integrity of the substrate metal. The removed metal may also be conveniently recovered. A molten salt bath of alkali metal hydroxide and alkali metal salt of an oxidizing agent is employed. Careful electrode to bath contact times and bath temperatures are observed. Additionally, a dilute mineral acid rinse and water rinse, with scrubbing in one of the rinses follows such molten salt bath contact for the electrode. Solids recovered from the rinses are combined.Type: GrantFiled: December 19, 1989Date of Patent: August 25, 1992Assignee: ELTECH Systems CorporationInventors: Zoilo J. Colon, Kenneth L. Hardee, Richard C. Carlson
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Patent number: 4586562Abstract: A plate heat exchanger assembly is provided having an anodic protection system comprising a plate heat exchanger frame, a plurality of heat exchanger plates mounted to the frame and means for selectively applying a voltage across the plates whereby during operation of the plate heat exchanger assembly biofouling and scaling is inhibited. The plurality of heat exchanger plates are mounted to the frame to define a plurality of heat exchange chambers for heat communication between a first and second process fluid being transmitted through the assembly. An insulating contact coating at points of electrically conductive contact between adjacent plates of the heat exchange chambers is provided such that the chambers comprise electrolytic chambers means are provided for selectively applying a voltage across said adjacent plates. A method of applying the insulating contact coating to a heat exchanger plate is also disclosed.Type: GrantFiled: August 10, 1983Date of Patent: May 6, 1986Assignee: Eltech Systems CorporationInventors: Richard C. Carlson, Donald L. DeRespiris, Anthony R. Sacco, Donald J. Groszek, Bonnie M. Ivancic
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Patent number: D385202Type: GrantFiled: July 12, 1996Date of Patent: October 21, 1997Assignee: Oak GrigsbyInventor: Richard C. Carlson