Patents by Inventor Roger F. Bernards
Roger F. Bernards 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: 8110252Abstract: The invention is directed to a solution and process for improving the solderability of a metal surface. In one embodiment, the invention is a silver deposit solution comprising an acid, a source of silver ions, and an additive selected from among pyrroles, triazoles, and tetrazoles, as well as derivatives and mixtures of those components. In another embodiment, the silver deposit solution also includes a 6-membered heterocyclic ring compound, wherein three members of the 6-membered heterocyclic ring are nitrogen atoms. Still another embodiment is a process for improving the solderability of a metal surface which involves applying a silver deposit solution as previously described to a metal surface.Type: GrantFiled: August 3, 2010Date of Patent: February 7, 2012Assignee: OMG Electronic Chemicals, LLCInventor: Roger F. Bernards
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Publication number: 20110039019Abstract: The invention is directed to a solution and process for improving the solderability of a metal surface. In one embodiment, the invention is a silver deposit solution comprising an acid, a source of silver ions, and an additive selected from among pyrroles, triazoles, and tetrazoles, as well as derivatives and mixtures of those components. In another embodiment, the silver deposit solution also includes a 6-membered heterocyclic ring compound, wherein three members of the 6-membered heterocyclic ring are nitrogen atoms. Still another embodiment is a process for improving the solderability of a metal surface which involves applying a silver deposit solution as previously described to a metal surface.Type: ApplicationFiled: August 3, 2010Publication date: February 17, 2011Inventor: Roger F. Bernards
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Patent number: 7767009Abstract: The invention is directed to a solution and process for improving the solderability of a metal surface. In one embodiment, the invention is a silver deposit solution comprising an acid, a source of silver ions, and an additive selected from among pyrroles, triazoles, and tetrazoles, as well as derivatives and mixtures of those components. In another embodiment, the silver deposit solution also includes a 6-membered heterocyclic ring compound, wherein three members of the 6-membered heterocyclic ring are nitrogen atoms. Still another embodiment is a process for improving the solderability of a metal surface which involves applying a silver deposit solution as previously described to a metal surface.Type: GrantFiled: September 14, 2005Date of Patent: August 3, 2010Assignee: OMG Electronic Chemicals, Inc.Inventor: Roger F. Bernards
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Publication number: 20100006799Abstract: A method of stripping nickel from a printed wiring board comprises providing a printed wiring board with a nickel deposit on a surface and contacting the nickel deposit with phosphate ions and an oxidizer. An aqueous solution comprises ammonium ions, phosphate ions and an oxidizing agent present in amounts effective to strip nickel. An aqueous solution comprises about 1% to about 10% by weight hydrogen peroxide and about 5% to about 30% by weight of an ammonium phosphate. A method of pre-treating a copper substrate comprises providing a printed wiring board having a copper substrate and contacting the copper substrate with phosphate ions, and an oxidizer. A method of neutralizing permanganate on a printed wiring board comprises providing a printed wiring board with a permanganate residue on the printed wiring board and contacting the permanganate residue with phosphate ions, and an oxidizer.Type: ApplicationFiled: September 22, 2009Publication date: January 14, 2010Applicant: OMG ELECTRONIC CHEMICALS, INC.Inventors: Roger F. Bernards, Joseph S. Bowers
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Patent number: 7591956Abstract: A method of stripping nickel from a printed wiring board comprises providing a printed wiring board with a nickel deposit on a surface and contacting the nickel deposit with phosphate ions and an oxidizer. An aqueous solution comprises ammonium ions, phosphate ions and an oxidizing agent present in amounts effective to strip nickel. An aqueous solution comprises about 1% to about 10% by weight hydrogen peroxide and about 5% to about 30% by weight of an ammonium phosphate. A method of pre-treating a copper substrate comprises providing a printed wiring board having a copper substrate and contacting the copper substrate with phosphate ions, and an oxidizer. A method of neutralizing permanganate on a printed wiring board comprises providing a printed wiring board with a permanganate residue on the printed wiring board and contacting the permanganate residue with phosphate ions, and an oxidizer.Type: GrantFiled: May 3, 2006Date of Patent: September 22, 2009Assignee: OMG Electronic Chemicals, Inc.Inventors: Roger F. Bernards, Joseph S. Bowers
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Publication number: 20090198006Abstract: The current method and composition relate to depositing silver onto a metal surface using an acid selected from the group consisting of salicylic acid and salicylic acid derivatives; a source of silver ions; and an additive selected from the group consisting of polyethylene glycol, a block copolymer of polyethylene glycol and polypropylene glycol, polypropylene glycol, block copolymers based on ethylenediamine as a core derivatives of any of the foregoing and mixtures of any of the foregoing.Type: ApplicationFiled: February 1, 2008Publication date: August 6, 2009Inventor: Roger F. Bernards
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Patent number: 7563315Abstract: The invention is directed to a method and composition for providing chemically-resistant roughened copper surfaces suitable for subsequent multilayer lamination. In one embodiment, a smooth copper surface is contacted with an adhesion promoting composition under conditions effective to provide a roughened copper surface, the adhesion promoting composition comprising an oxidizer, a pH adjuster, a topography modifier, and a sulfur-containing coating stabilizer. In another embodiment, a smooth copper surface is contacted with an adhesion promoting composition under conditions effective to provide a roughened copper surface, the adhesion promoting composition comprising an oxidizer, a pH adjuster, and a topography modifier. Then, in a subsequent step, the roughened copper surface is contacted with an acid resistance promoting composition.Type: GrantFiled: June 8, 2006Date of Patent: July 21, 2009Assignee: OMG Electronic Chemicals, Inc.Inventors: Roger F. Bernards, Joseph Stanton Bowers, Jr., Benjamin T. Carroll, Alvin A. Kucera
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Patent number: 7108795Abstract: The invention is directed to a method and composition for providing chemically-resistant roughened copper surfaces suitable for subsequent multilayer lamination. In one embodiment, a smooth copper surface is contacted with an adhesion promoting composition under conditions effective to provide a roughened copper surface, the adhesion promoting composition comprising an oxidizer, a pH adjuster, a topography modifier, and a sulfur-containing coating stabilizer. In another embodiment, a smooth copper surface is contacted with an adhesion promoting composition under conditions effective to provide a roughened copper surface, the adhesion promoting composition comprising an oxidizer, a pH adjuster, and a topography modifier. Then, in a subsequent step, the roughened copper surface is contacted with an acid resistance promoting composition.Type: GrantFiled: June 23, 2005Date of Patent: September 19, 2006Assignee: Electrochemicals, Inc.Inventors: Roger F. Bernards, Joseph Stanton Bowers, Jr., Benjamin T. Carroll, Alvin A. Kucera
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Patent number: 6946027Abstract: The invention is directed to a method and composition for providing chemically-resistant roughened copper surfaces suitable for subsequent multilayer lamination. In one embodiment, a smooth copper surface is contacted with an adhesion promoting composition under conditions effective to provide a roughened copper surface, the adhesion promoting composition comprising an oxidizer, a pH adjuster, a topography modifier, and a sulfur-containing coating stabilizer. In another embodiment, a smooth copper surface is contacted with an adhesion promoting composition under conditions effective to provide a roughened copper surface, the adhesion promoting composition comprising an oxidizer, a pH adjuster, and a topography modifier. Then, in a subsequent step, the roughened copper surface is contacted with an acid resistance promoting composition.Type: GrantFiled: February 17, 2004Date of Patent: September 20, 2005Assignee: Electrochemicals, Inc.Inventors: Roger F. Bernards, Joseph Stanton Bowers, Jr., Benjamin T. Carroll, Alvin A. Kucera
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Publication number: 20040159264Abstract: The invention is directed to a method and composition for providing chemically-resistant roughened copper surfaces suitable for subsequent multilayer lamination. In one embodiment, a smooth copper surface is contacted with an adhesion promoting composition under conditions effective to provide a roughened copper surface, the adhesion promoting composition comprising an oxidizer, a pH adjuster, a topography modifier, and a sulfur-containing coating stabilizer. In another embodiment, a smooth copper surface is contacted with an adhesion promoting composition under conditions effective to provide a roughened copper surface, the adhesion promoting composition comprising an oxidizer, a pH adjuster, and a topography modifier. Then, in a subsequent step, the roughened copper surface is contacted with an acid resistance promoting composition.Type: ApplicationFiled: February 17, 2004Publication date: August 19, 2004Inventors: Roger F. Bernards, Joseph Stanton Bowers, Benjamin T. Carroll, Alvin A. Kucera
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Publication number: 20040077733Abstract: A method for preventing a carbon dispersion from increasing in viscosity during use is described. The dispersion comprises graphite particles or carbon black particles or a combination of both dispersed in a fluid. The method involves lowering the susceptibility of the carbon dispersion to an increase in viscosity or ionic strength by lowering its pH or reducing its exposure to reactive components in the ambient atmospheric gas. The pH can be lowered by at least partially removing ammonia from the dispersion, or by adding a material that reduces the pH of the dispersion. The stability of the dispersion can also be improved by isolating the dispersion from reactive atmospheric gas. The stabilized aqueous carbon dispersion can have a viscosity of less than about 20 cps and a conductivity of less than about 3 mS.Type: ApplicationFiled: August 5, 2003Publication date: April 22, 2004Inventors: Joseph S. Bowers, Roger F. Bernards
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Patent number: 6716281Abstract: The invention is directed to a method and composition for providing chemically-resistant roughened copper surfaces suitable for subsequent multilayer lamination. In one embodiment, a smooth copper surface is contacted with an adhesion promoting composition under conditions effective to provide a roughened copper surface, the adhesion promoting composition comprising an oxidizer, a pH adjuster, a topography modifier, and a sulfur-containing coating stabilizer. In another embodiment, a smooth copper surface is contacted with an adhesion promoting composition under conditions effective to provide a roughened copper surface, the adhesion promoting composition comprising an oxidizer, a pH adjuster, and a topography modifier. Then, in a subsequent step, the roughened copper surface is contacted with an acid resistance promoting composition.Type: GrantFiled: May 10, 2002Date of Patent: April 6, 2004Assignee: Electrochemicals, Inc.Inventors: Roger F. Bernards, Joseph Stanton Bowers, Jr., Benjamin T. Carroll, Alvin A. Kucera
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Publication number: 20030213553Abstract: The invention is directed to a method and composition for providing chemically-resistant roughened copper surfaces suitable for subsequent multilayer lamination. In one embodiment, a smooth copper surface is contacted with an adhesion promoting composition under conditions effective to provide a roughened copper surface, the adhesion promoting composition comprising an oxidizer, a pH adjuster, a topography modifier, and a sulfur-containing coating stabilizer. In another embodiment, a smooth copper surface is contacted with an adhesion promoting composition under conditions effective to provide a roughened copper surface, the adhesion promoting composition comprising an oxidizer, a pH adjuster, and a topography modifier. Then, in a subsequent step, the roughened copper surface is contacted with an acid resistance promoting composition.Type: ApplicationFiled: May 10, 2002Publication date: November 20, 2003Inventors: Roger F. Bernards, Joseph Stanton Bowers, Benjamin T. Carroll, Alvin A. Kucera
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Patent number: 6623787Abstract: A method for preventing a carbon dispersion from increasing in viscosity during use is described. The dispersion comprises graphite particles or carbon black particles or a combination of both dispersed in a fluid. The method involves lowering the susceptibility of the carbon dispersion to an increase in viscosity or ionic strength by lowering its pH or reducing its exposure to reactive components in the ambient atmospheric gas. The pH can be lowered by at least partially removing ammonia from the dispersion, or by adding a material that reduces the pH of the dispersion. The stability of the dispersion can also be improved by isolating the dispersion from reactive atmospheric gas. The stabilized aqueous carbon dispersion can have a viscosity of less than about 20 cps and a conductivity of less than about 3 mS.Type: GrantFiled: July 26, 2001Date of Patent: September 23, 2003Assignee: Electrochemicals Inc.Inventors: Joseph S. Bowers, Jr., Roger F. Bernards
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Publication number: 20030175441Abstract: An apparatus and method for applying a fluid to the through holes, vias, or other recesses of a printed wiring board is disclosed. The apparatus is a roller assembly. The roller comprises a cover and an interior portion and is supported by a mounting. A fluid supply provides treatment fluid to the interior portion. A feed transports a board into contact with the roller. The method is carried out by transporting fluid to the interior portion of the roller. The fluid then passes from the interior portion to the cover. A board is transported into contact with the roller assembly. Upon contact with a board, the roller cover deforms so that it distributes fluid across the board and pushes the fluid into the board's recesses. The roller assembly quickly receives and coats printed wiring boards while penetrating and coating recesses with high aspect ratios using minimal amounts of treatment fluid.Type: ApplicationFiled: March 12, 2002Publication date: September 18, 2003Inventor: Roger F. Bernards
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Publication number: 20030022945Abstract: A method for preventing a carbon dispersion from increasing in viscosity during use is described. The dispersion comprises graphite particles or carbon black particles or a combination of both dispersed in a fluid. The method involves lowering the susceptibility of the carbon dispersion to an increase in viscosity or ionic strength by lowering its pH or reducing its exposure to reactive components in the ambient atmospheric gas. The pH can be lowered by at least partially removing ammonia from the dispersion, or by adding a material that reduces the pH of the dispersion. The stability of the dispersion can also be improved by isolating the dispersion from reactive atmospheric gas. The stabilized aqueous carbon dispersion can have a viscosity of less than about 20 cps and a conductivity of less than about 3 mS.Type: ApplicationFiled: July 26, 2001Publication date: January 30, 2003Inventors: Joseph S. Bowers, Roger F. Bernards
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Patent number: 5395652Abstract: A process and catalyst for electroless plating of metal over a substrate. The process involves providing a catalyst that is the product of reaction of a noble metal with bromide ions where the ratio of bromide ions to noble metal ions is at least 100 to 1 and the noble metal is present in a concentration sufficient to catalyze an electroless plating reaction, contacting a substrate to be plated with the catalyst, and reducing the catalyst prior to or during plating of the substrate.Type: GrantFiled: January 5, 1994Date of Patent: March 7, 1995Assignee: Shipley Company Inc.Inventors: Roger F. Bernards, Gordon L. Fisher, Wade W. Sonnenberg
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Patent number: 5252196Abstract: Compositions and processes for electrolytic plating. The compositions are characterized by critical amounts of one or more brightening and leveling agents. The compositions are particularly useful for plating through hole walls of printed circuit boards, including through holes having an aspect ratio equal or greater than about ten to one.Type: GrantFiled: December 5, 1991Date of Patent: October 12, 1993Assignee: Shipley Company Inc.Inventors: Wade Sonnenberg, Gordon Fisher, Roger F. Bernards, Patrick Houle
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Patent number: 5068013Abstract: A composition for electroplating copper onto a conductive surface comprising a solution soluble copper salt and an acid electrolyte, said copper salt being present in a concentration of from about 1 to 10 grams per liter of solution and said acid being present in a concentration whereby the acid to copper ratio preferably varies between about 30 to 1 and 50 to 1. The composition is especially useful for the plating of walls of cylindrical openings having a ratio of height to diameter of at least 10 to 1 and a length of at least 0.100 inches.Type: GrantFiled: January 29, 1990Date of Patent: November 26, 1991Assignee: Shipley Company Inc.Inventors: Roger F. Bernards, Gordon Fischer, Wade Sonnenberg
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Patent number: 5051154Abstract: The invention discloses the use of an additive for acid copper plating bath which is chosen based on criteria of creating a shift in the charge transfer overpotential of the bath; or alternatively, creating a differential overpotential between the surface of a high aspect ratio circuit board and the recesses of such boards. The additive may be a single or multi-component additive.Type: GrantFiled: January 29, 1990Date of Patent: September 24, 1991Assignee: Shipley Company Inc.Inventors: Roger F. Bernards, Gordon Fisher, Wade Sonnenberg, Edward J. Cerwonka, Stewart Fisher