Patents by Inventor Holger Wegener
Holger Wegener 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).
-
Publication number: 20140347664Abstract: An apparatus for identifying defects within the volume of a transparent sheet, such as a glass sheet, is provided. The apparatus includes an illumination device that directs incident light onto at least a portion of a surface of the sheet so as to illuminate the sheet, and an image detector onto which the light backscattered from the sheet is directed to image the sheet. The apparatus generates at least two interference images under different capturing conditions in order to perform identification of defects by evaluating the at least two interference images.Type: ApplicationFiled: August 7, 2014Publication date: November 27, 2014Inventors: Bruno Schrader, Frank Macherey, Holger Wegener, Michael Stelzl
-
Patent number: 8867191Abstract: A capacitor having a dielectric consisting of a glass layer with an alkali metal oxide content of at most 2 wt % and a thickness of at most 50 ?m is provided. The capacitor includes at least two metal layers which are separated by the glass layer. The glass layer is preferably produced by a down-draw method or by an overflow down-draw fusion method.Type: GrantFiled: August 9, 2011Date of Patent: October 21, 2014Assignee: Schott AGInventors: Martin Letz, Hans-Heinrich Gundelach, Holger Wegener
-
Publication number: 20140284577Abstract: Thin glasses having high refractive index (nd), a layer composite assembly made from these thin glasses, a method for the production of the thin glasses, and the uses of the thin glasses are provided. The thin glasses are processed in an in line manufacturing process and have the optical properties of a classical optical glass. The thin glasses are highly transparent, crystallization-resistant, chemically resistant and highly refractive. The viscosity/temperature behavior of the thin glasses is adjusted to the manufacturing process via in line flat glass methods.Type: ApplicationFiled: March 18, 2014Publication date: September 25, 2014Applicant: Schott AGInventors: Karl Mennemann, Uwe Kolberg, Holger Wegener, Monika Gierke, Ute Woelfel, Joerg Fechner
-
Publication number: 20140284236Abstract: A packaging unit for accommodating glass rolled onto a winding core is provided. The packaging unit includes at least two wall parts that can be separated from one another and together form a closed unit. A first retaining element is connected to a first wall part and a second retaining element is connected to a second wall part arranged opposite the first wall part. A damping element is connected to at least one retaining element and/or to at least one of the first and second wall parts.Type: ApplicationFiled: August 16, 2012Publication date: September 25, 2014Applicant: SCHOTT AGInventors: Gregor Kuebart, Thomas Wiegel, Juergen Vogt, Holger Wegener, Rainer Schwertfeger, Georg Sparschuh, Dirk Sprenger, Angelika Ullmann
-
Publication number: 20140220300Abstract: A glass roll includes at least one glass film and one intermediate material one on top of the other in at least two layers onto a winding core. The glass film layers are held in place by the intermediate material layers. The glass roll is produced with a method including provision of a glass film, a winding core and a compressible intermediate material. At least one inside layer of the intermediate material is wound onto the winding core. The glass film and the intermediate material are wound onto the winding core in such a manner that the glass film is wound onto the winding core in alternating layers with the intermediate material. The intermediate material and/or the glass film is wound at a tensile stress acting in a longitudinal direction which causes a compression of the intermediate material and holds the glass film end in place on the glass roll.Type: ApplicationFiled: April 7, 2014Publication date: August 7, 2014Applicant: Schott AGInventors: Angelika Ullmann, Georg Sparschuh, Gregor Kübart, Holger Wegener, Jürgen Vogt, Rainer Schwertfeger, Thomas Wiegel
-
Publication number: 20140216108Abstract: A method for separating a thin glass sheet, such as a glass film along a predefined cutting line provides the cutting line immediately has a temperature of greater than 250 K below the transformation point Tg of the glass of the thin sheet of glass, including the input of energy along the cutting line using a laser beam which acts such that a separation of the thin glass sheet occurs.Type: ApplicationFiled: April 7, 2014Publication date: August 7, 2014Applicant: SCHOTT AGInventors: Thomas Wiegel, Jürgen Vogt, Andreas Habeck, Georg Sparschuh, Holger Wegener, Gregor Kübart, Angelika Ullmann
-
Publication number: 20140220310Abstract: A glass film has a thickness of less than 1.2 mm, and a first and a second surface, both surfaces being defined by edges having an edge surface. The respective edge surfaces are provided with a microstructure surface, including micro-cracks and fissures which are laterally defined by flanks. At least two edges located opposite one another include a low viscosity adhesive having a viscosity of less than 600 mPas at 23° C., on their microstructure surfaces in such a way that the respective flanks of the micro-cracks and fissures are bonded together using an adhesive so that the probability of failure of the glass film having a length of 1000 m and a thickness in the range of 5 ?m to 350 ?m, and a diameter of a wound glass film roll in the range of 50 mm to 1000 mm is less than 1%.Type: ApplicationFiled: April 7, 2014Publication date: August 7, 2014Applicant: SCHOTT AGInventors: Jürgen Vogt, Thomas Wiegel, Holger Wegener, Ulrich Neuhäusler, Angelika Ullmann
-
Publication number: 20140220309Abstract: A glass film has a first and a second surface which are both defined by like edges, wherein the surface of at least two edges which are located opposite one another have an average surface roughness of an maximum of 2 nanometers.Type: ApplicationFiled: April 7, 2014Publication date: August 7, 2014Applicant: Schott AGInventors: Jürgen Vogt, Thomas Wiegel, Holger Wegener, Ulrich Neuhäusler, Angelika Ullmann
-
Publication number: 20130207058Abstract: Titanium oxide containing borosilicate glasses, which have been produced without the use of arsenic and antimony compounds, are provided. An environmentally friendly refining method for providing titanium oxide containing borosilicate glass is also provided. The method includes using oxygen containing selenium compounds as refining agents to provide glasses with good transmittance values in the infrared range and show no disturbing discolorations. The glasses of the present disclosure are particularly suitable for the production of IR light conductors, cover glasses for photo sensors, and UV filters.Type: ApplicationFiled: August 13, 2012Publication date: August 15, 2013Applicant: SCHOTT AGInventors: Holger WEGENER, Rainer SCHWERTFEGER, Lenka GRYGAROVA, Reinhard KASSNER
-
Publication number: 20110317329Abstract: A capacitor having a dielectric consisting of a glass layer with an alkali metal oxide content of at most 2 wt % and a thickness of at most 50 ?m is provided. The capacitor includes at least two metal layers which are separated by the glass layer. The glass layer is preferably produced by a down-draw method or by an overflow down-draw fusion method.Type: ApplicationFiled: August 9, 2011Publication date: December 29, 2011Inventors: Martin Letz, Hans-Heinrich Gundelach, Holger Wegener
-
Publication number: 20100209685Abstract: The invention relates to a low-radiation cover glass for radiation-sensitive sensors, with low intrinsic ?-radiation, in particular for use with semiconductor technology. The glass includes a glass composition, selected from the following: aluminosilicate glass, aluminoborosilicate glass, borosilicate glass, in particular borosilicate glass that is devoid of alkali, with a TiO2 content of >0.1-10% by weight, in particular 1-8% by weight.Type: ApplicationFiled: October 2, 2006Publication date: August 19, 2010Applicant: Schott AGInventors: Andreas Weber, Holger Wegener, Reinhard Kassner, Peter Brix
-
Patent number: 7735338Abstract: The method of making thin glass panes includes conveying a glass melt through a vertical inlet to a drawing tank with a slit nozzle; drawing a glass ribbon downward from the slit nozzle; setting a total throughput by setting length and cross section of the inlet and by heating and cooling the inlet to control glass melt viscosity so that pressure in the inlet decreases; and setting a throughput per unit of length in a lateral direction along the glass ribbon via nozzle system geometry and by heating and cooling of the drawing tank and slit nozzle to control melt viscosity, so that glass does not wet an underside of the slit nozzle near a breaking edge. The setting of the total throughput and the throughput per unit length are largely decoupled to simplify process control. An inventive apparatus for performing the method is also disclosed.Type: GrantFiled: October 4, 2007Date of Patent: June 15, 2010Assignee: Schott AGInventors: Rudolf Mueller, Horst Loch, Dirk Sprenger, Jose Zimmer, Holger Wegener
-
Publication number: 20090217706Abstract: The invention relates to a method for producing a low-radiation cover glass with low intrinsic ?-radiation for radiation-sensitive sensors, in particular for use with semiconductor technology, without the production of intermediate moulds, by the direct shaping of plate glass with appropriate dimensions. The invention also relates to a device for carrying out said method.Type: ApplicationFiled: October 2, 2006Publication date: September 3, 2009Applicant: Schott AGInventors: Andreas Weber, Holger Wegener, Reinhard Kassner, Peter Brix
-
Publication number: 20080184741Abstract: The method of making thin glass panes includes conveying a glass melt through a vertical inlet to a drawing tank with a slit nozzle; drawing a glass ribbon downward from the slit nozzle; setting a total throughput by setting length and cross section of the inlet and by heating and cooling the inlet to control glass melt viscosity so that pressure in the inlet decreases; and setting a throughput per unit of length in a lateral direction along the glass ribbon via nozzle system geometry and by heating and cooling of the drawing tank and slit nozzle to control melt viscosity, so that glass does not wet an underside of the slit nozzle near a breaking edge. The setting of the total throughput and the throughput per unit length are largely decoupled to simplify process control. An inventive apparatus for performing the method is also disclosed.Type: ApplicationFiled: October 4, 2007Publication date: August 7, 2008Inventors: Rudolf Mueller, Horst Loch, Dirk Sprenger, Jose Zimmer, Holger Wegener
-
Patent number: 6722250Abstract: To shorten the processing time in modern plants for cutting away pieces or sections from a continously moving endless material, e.g. a glass strip, one after the other by flying cutting the cutting bridge carrying the cutting device (6) is accelerated until at a speed within a predetermined tolerance range of the feed speed of the continuously running endless material. Then the cutting bridge speed is synchronized for each piece or section to be cutaway and the cutting away of each piece or section takes place after the synchronization. To attain a very high precision cutting the spacing of the front cut edge formed when the previous piece or section is cut away from the cutting device is measured by means of an image-taking device (7) prior to cutting away of the next piece or section. Then the measured spacing is compared with a set value for the spacing and the speed of the cutting bridge is synchronized or fine tuned according to the comparison prior to cutting away the next piece or section.Type: GrantFiled: January 4, 2001Date of Patent: April 20, 2004Assignee: Schott Spezialglas GmbHInventors: Johannes Wagner, Ruediger Hepp, Holger Wegener, Helmut Larm, Dirk Hauer, Heinz-Georg Geissler
-
Patent number: 6640682Abstract: To shorten the processing time in modern plants for cutting away pieces or sections from a continously moving endless material, e.g. a glass strip, one after the other by flying cutting the cutting bridge carrying the cutting device (6) is accelerated until at a speed within a predetermined tolerance range of the feed speed of the continuously running endless material. Then the cutting bridge speed is synchronized for each piece or section to be cutaway and the cutting away of each piece or section takes place after the synchronization. To attain a very high precision cutting the spacing of the front cut edge formed when the previous piece or section is cut away from the cutting device is measured by means of an image-taking device (7) prior to cutting away of the next piece or section. Then the measured spacing is compared with a set value for the spacing and the speed of the cutting bridge is synchronized or fine tuned according to the comparison prior to cutting away the next piece or section.Type: GrantFiled: June 24, 2002Date of Patent: November 4, 2003Assignee: Schott Spezialglas GmbHInventors: Johannes Wagner, Ruediger Hepp, Holger Wegener, Helmut Larm, Dirk Hauer, Heinz-Georg Geissler
-
Patent number: 6532770Abstract: Described are substrates for magnetic media which have excellent surface properties as prepared directly from a slot drawdown glass sheet forming process. The substrate blanks cut directly from the glass sheet, as drawn, require little or no surface treatment for use as substrates for magnetic media, particularly hard disk drives. Also described are methods for preparing such substrates and methods for preparing magnetic media therefrom. Further described are the substrates and magnetic media prepared by such processes.Type: GrantFiled: May 22, 2001Date of Patent: March 18, 2003Assignee: Schott Glass Technologies, Inc.Inventors: James M. Uhlik, Adam O'Ryan, Horst Loch, Holger Wegener
-
Publication number: 20020166427Abstract: To shorten the processing time in modern plants for cutting away pieces or sections from a continously moving endless material, e.g. a glass strip, one after the other by flying cutting the cutting bridge carrying the cutting device (6) is accelerated until at a speed within a predetermined tolerance range of the feed speed of the continuously running endless material. Then the cutting bridge speed is synchronized for each piece or section to be cutaway and the cutting away of each piece or section takes place after the synchronization. To attain a very high precision cutting the spacing of the front cut edge formed when the previous piece or section is cut away from the cutting device is measured by means of an image-taking device (7) prior to cutting away of the next piece or section. Then the measured spacing is compared with a set value for the spacing and the speed of the cutting bridge is synchronized or fine tuned according to the comparison prior to cutting away the next piece or section.Type: ApplicationFiled: June 24, 2002Publication date: November 14, 2002Inventors: Johannes Wagner, Ruediger Hepp, Holger Wegener, Helmut Larm, Dirk Hauer, Heinz-Georg Geissler
-
Patent number: 6374640Abstract: A simple and economical method is described for compacting or shrinking flat glass panes. The method ensures high temperature homogeneity in the glass. First, the glass panes are cleaned and then a stack of glass panes to be treated is assembled without applying a release agent to any of the glass panes. Then the stack of glass panes is placed between ceramic panels made of silicon-infiltrated silicon carbide and this stack together with the ceramic panels is subjected to a heat treatment in a radiation furnace at temperatures ranging from 300° C. to 900° C. The ceramic panels have a thermal conductivity, which, in the region of the heat treatment temperature, is at least 5 times as large as that of the glass panes. The ratio of the total thickness of the ceramic panels to the height of the glass stack should be at least 1/&lgr;/40W/(mK), wherein &lgr; is the thermal conductivity of the ceramic panel at the temperatures of the heat treatment.Type: GrantFiled: August 2, 2000Date of Patent: April 23, 2002Assignee: Schott GlasInventors: Ulrich Fotheringham, Dirk Sprenger, Heinrich Ostendarp, Holger Wegener, Wolfgang Buergel, Eva Hoelzel
-
Publication number: 20020001738Abstract: Described are substrates for magnetic media which have excellent surface properties as prepared directly from a slot drawdown glass sheet forming process. The substrate blanks cut directly from the glass sheet, as drawn, require little or no surface treatment for use as substrates for magnetic media, particularly hard disk drives. Also described are methods for preparing such substrates and methods for preparing magnetic media therefrom. Further described are the substrates and magnetic media prepared by such processes.Type: ApplicationFiled: June 12, 2001Publication date: January 3, 2002Inventors: James M. Uhlik, Adam O'Ryan, Horst Loch, Holger Wegener