Patents by Inventor Dennis S. Postupack
Dennis S. Postupack 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: 6044666Abstract: An insulating flow block having a plurality of bores extending therethrough to permit the flow of molten fiberizable material through the block, a bushing assembly having a bushing block with one or more bores extending through a peripheral region thereof to divert a portion of a supply of molten fiberizable material from a central region of the bushing block to the peripheral region of the bushing block, and a bushing positioned in general registry with the bore of the peripheral region of the bushing block to facilitate the flow of molten fiberizable material to a peripheral region of the bushing is disclosed.Type: GrantFiled: May 12, 1998Date of Patent: April 4, 2000Assignee: PPG Industries Ohio, Inc.Inventors: Gerard J. Burger, Dennis S. Postupack, Robert A. Roach, James W. Koewing
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Patent number: 5352258Abstract: The process and apparatus of the present invention enable the production of glass fiber product from scrap glass fibers. The process includes: feeding the scrap glass fibers having an average length up to around 12 inches to a glass melting tank having a pool of molten fiberizable glass, melting the scrap glass fibers without the presence of non-vitrified glass forming materials in an oxidizing environment, conditioning the melt to a formable viscosity, and forming the glass fiber from the conditioned melt where for a given glass fiber product there is a near constant pull of the melted glass from the melter. The rate of feeding of the scrap glass to the melter is sufficient to maintain the pool of melted glass with a level within the range of .+-.0.35 inch (9 mm.) over a period of eight hours. The scrap glass fibers have a similar fiberizable inorganic composition to that of the desired glass fiber product and generally include fibers with organic-containing sizes and/or coatings.Type: GrantFiled: March 31, 1993Date of Patent: October 4, 1994Assignee: PPG Industries, Inc.Inventors: Stanley C. DeGreve, Joe B. Lovelace, E. Charles Watkins, Timothy G. Mathis, Harry Makitka, Thomas C. Bour, John W. Cotton, Curtis L. Hanvey, Jr., Dennis S. Postupack, James V. Shivers, Timothy Smith
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Patent number: 4845310Abstract: A method for electroforming a metal grid capable of conforming to a curved substrate is disclosed, as well as use of such a grid in an aircraft transparency.Type: GrantFiled: April 28, 1987Date of Patent: July 4, 1989Assignee: PPG Industries, Inc.Inventor: Dennis S. Postupack
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Patent number: 4762595Abstract: A method for producing an electroforming mandrel is disclosed wherein a continuous conductive film is deposited onto a substrate, and a photoresist is deposited over the conductive film, exposed and developed to form a pattern on the conductive film whereupon a metal element is electroformed.Type: GrantFiled: September 18, 1987Date of Patent: August 9, 1988Assignee: PPG Industries, Inc.Inventors: Dennis S. Postupack, Jean P. Pressau
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Patent number: 4421836Abstract: A method for repairing defects in the form of discontinuities in a photomask pattern in or on a glass substrate by means of electroless deposition of a nickel-containing coating on the surface of a glass substrate is disclosed.Type: GrantFiled: November 3, 1982Date of Patent: December 20, 1983Assignee: PPG Industries, Inc.Inventor: Dennis S. Postupack
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Patent number: 4383016Abstract: A method for repairing defects in the form of discontinuities in a photomask pattern in or on a glass substrate by means of electroless deposition of a nickel-containing coating on the surface of a glass substrate is disclosed.Type: GrantFiled: September 25, 1981Date of Patent: May 10, 1983Assignee: PPG Industries, Inc.Inventor: Dennis S. Postupack
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Patent number: 4302263Abstract: This invention relates to making continuous ribbons of clear, flexible interlayer material into a maximum number of interlayers having a coating of graded intensity along a longitudinal edge portion thereof for use in curved laminated safety glass windshields. The method avoids rubbing or differentially stretching the flexible interlayer material during processing, which includes cutting a continuous ribbon of clear, flexible interlayer material into successive interfitting flexible sheets of trapezoidal shape, applying a shade band, preferably by electrostatic spraying, to a predetermined portion of each sheet and laminating the sheet so treated to one or more rigid transparent sheets of glass or a recognized plastic substitute for glass.Type: GrantFiled: August 20, 1979Date of Patent: November 24, 1981Assignee: PPG Industries, Inc.Inventor: Dennis S. Postupack
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Patent number: 4276325Abstract: This invention relates to a method of and apparatus for forming a colored shade band on an elongated area of a flexible sheet of interlayer material comprising applying a dye composition by electrostatic spraying against an elongated area of a surface of a flexible sheet of non-conductive interlayer material such as polyurethane or plasticized polyvinyl butyral. A flexible sheet to be coated is mounted on a support carriage at a loading and unloading chamber in a substantially horizontal support plane, is transferred to a coating chamber, is tilted into an oblique plane at said coating chamber where it is aligned with a platen mask, electrostatic spray means disposed to one side of said platen mask supplies an electrostatic spray of a dye composition through said platen mask to the elongated area of said flexible sheet.Type: GrantFiled: April 21, 1978Date of Patent: June 30, 1981Assignee: PPG Industries, Inc.Inventors: Dennis S. Postupack, David A. Allerton
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Patent number: 4259371Abstract: A method is disclosed for improving the uniformity and durability of a pyrolytically deposited metal oxide film on glass by cooling the coating solution and/or the atomizing air prior to the application of the coating composition to the hot glass surface.Type: GrantFiled: July 25, 1979Date of Patent: March 31, 1981Assignee: PPG Industries, Inc.Inventors: Dennis S. Postupack, John F. Sopko
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Patent number: 4254734Abstract: Forming a colored shade band on an elongated area of a flexible sheet of interlayer material comprising applying a dye composition by electrostatic spraying against a portion of a surface of a flexible sheet of non-conductive interlayer material such as polyurethane or plasticized polyvinyl butyral. A novel grounded shielding structure of electroconductive material comprises a primary shield located in close proximity to the upper surface of a workpiece to be partially coated. A preferred embodiment comprises primary and secondary shields with an optional manifold between the shields to ensure superior control of a pattern of graded intensity along the transverse dimension of an elongated area to be coated. One or both shields may be heated to avoid the deposit of spray particles that cause optical defects. The workpiece so coated is useful as an interlayer in shaded, bent laminated safety glass windshields.Type: GrantFiled: August 20, 1979Date of Patent: March 10, 1981Assignee: PPG Industries, Inc.Inventors: Dennis S. Postupack, David A. Allerton, Richard L. Emmert
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Patent number: 4254735Abstract: This invention relates to a method of and apparatus for forming a colored shade band on an elongated area of a flexible sheet of interlayer material comprising applying a dye composition by electrostatic spraying against an elongated area of a surface of a flexible sheet of non-conductive interlayer material such as polyurethane or plasticized polyvinyl butyral. A flexible sheet to be coated is mounted on a support carriage at a loading and unloading chamber in a substantially horizontal support plane, is transferred to a coating chamber, is tilted into an oblique plane at said coating chamber where it is aligned with a platen mask, electrostatic spray means disposed to one side of said platen mask supplies an electrostatic spray of a dye composition through said platen mask to the elongated area of said flexible sheet.Type: GrantFiled: August 20, 1979Date of Patent: March 10, 1981Assignee: PPG Industries, Inc.Inventors: Dennis S. Postupack, David A. Allerton
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Patent number: 4244997Abstract: This invention relates to making continuous ribbons of clear, flexible interlayer material into a maximum number of interlayers having a coating of graded intensity along a longitudinal edge portion thereof for use in curved laminated safety glass windshields. The method avoids rubbing or differentially stretching the flexible interlayer material during processing, which includes cutting a continuous ribbon of clear, flexible interlayer material into successive interfitting flexible sheets of trapezoidal shape, applying a shade band, preferably by electrostatic spraying, to a predetermined portion of each sheet and laminating the sheet so treated to one or more rigid transparent sheets of glass or a recognized plastic substitute for glass.Type: GrantFiled: March 16, 1978Date of Patent: January 13, 1981Assignee: PPG Industries, Inc.Inventor: Dennis S. Postupack
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Patent number: 4208446Abstract: Forming a colored shade band on an elongated area of a flexible sheet of interlayer material comprising applying a dye composition by electrostatic spraying against a portion of a surface of a flexible sheet of non-conductive interlayer material such as polyurethane or plasticized polyvinyl butyral. A novel grounded shielding structure of electroconductive material comprises a primary shield located in close proximity to the upper surface of a workpiece to be partially coated. A preferred embodiment comprises primary and secondary shields with an optional manifold between the shields to ensure superior control of a pattern of graded intensity along the transverse dimension of an elongated area to be coated. One or both shields may be heated to avoid the deposit of spray particles that cause optical defects. The workpiece so coated is useful as an interlayer in shaded, bent laminated safety glass windshields.Type: GrantFiled: April 21, 1978Date of Patent: June 17, 1980Assignee: PPG Industries, Inc.Inventors: Dennis S. Postupack, David A. Allerton, Richard L. Emmert
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Patent number: 4139652Abstract: An electrostatic spray process for the formation of a shade band on a polymeric innerlayer for laminated safety glass is disclosed. The improvement comprises using a solvent system of N-lower alkyl-pyrrolidone and tetrahydrofuran. This solvent system combines high dye solubility for process efficiency with proper volatility for optimum aesthetic quality in the finished product.Type: GrantFiled: November 30, 1977Date of Patent: February 13, 1979Assignee: PPG Industries, Inc.Inventors: Dennis S. Postupack, David A. Allerton
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Patent number: 4138284Abstract: A method of forming a colored shade band having a relatively wide portion of essentially uniform intensity and a relatively narrow boundary portion of graded intensity by spraying a dye composition along a longitudinally extending edge portion of a non-electroconductive substrate such as a glass sheet or a sheet of plastic. In one embodiment of this invention, the substrate is sprayed to form the graded band and then laminated to a layer of plastic interlayer material to produce a laminated window having a shade band having a desired transverse pattern of graded intensity along a longitudinally extending edge portion thereof.Type: GrantFiled: January 9, 1978Date of Patent: February 6, 1979Assignee: PPG Industries, Inc.Inventor: Dennis S. Postupack