Patents by Inventor Reiner Willeke
Reiner Willeke 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: 9773744Abstract: Generally, the subject matter disclosed herein relates to methods for forming modern sophisticated semiconductor devices, and more specifically, methods wherein substantially lead-free solder bumps may be formed above a contact layer of a semiconductor chip. One illustrative method disclosed herein includes forming a solder bump above a metallization layer of a semiconductor device, removing an oxide film from a surface of the solder bump, and, after removing the oxide film, performing a solder bump reflow process in a reducing ambient to reflow the solder bump.Type: GrantFiled: July 12, 2011Date of Patent: September 26, 2017Assignee: GLOBALFOUNDRIES Inc.Inventors: Reiner Willeke, Sören Zenner
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Patent number: 9737921Abstract: The invention relates to a device for strip guidance in a hot medium, comprising a deflection roller (3, 38) which has two roller pins (23, 39) and is mounted to supporting arms (1, 2, 34, 37, 54, 57) by means of ceramic journal bearings (20, 31), wherein the journal bearings (20, 31) are in each case arranged in a bearing receptacle (45, 55) of the associated supporting arm (1, 2, 34, 37, 54, 57). The invention is characterized in that at least one of the journal bearings (20, 31) in its associated supporting arm (1, 2, 34, 37, 54, 57) is fixed in the bearing receptacle (45, 55) by means of a force-fit that engages on the outer edge of the journal bearing (20, 31) and balances the different heat expansion coefficients of the journal bearings (20, 31) and the bearing receptacle (45, 55).Type: GrantFiled: April 11, 2013Date of Patent: August 22, 2017Assignee: Thyssenkrupp Steel Europe AGInventors: Marc Blumenau, Frank Eisner, Christopher Gusek, Fred Jindra, Rudolf Schoenenberg, Bert-Reiner Willeke, Tobias Denner, Christian Klatt, Jens Wemhoener
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Patent number: 9562278Abstract: The invention relates to a device for strip guidance in a hot medium, comprising a deflection roller (3, 38) mounted on supporting arms (1, 2, 34, 37, 54, 57) and a carrier device holding the supporting arms (1, 2, 34, 37, 54, 57). The device is characterized in that one of the supporting arms (1, 2, 34, 37, 54, 57) is mounted on the carrier device by means of a floating bearing (5), wherein the floating bearing (5) allows the mounted supporting arm on the carrier device to move parallel to the longitudinal direction of the deflection roller (3, 38), and in that an elastic counter element (12), which acts parallel to the longitudinal direction of the deflection roller (3, 38) upon the supporting arm (1, 2, 34, 37, 54, 57) mounted on the floating bearing (5), is present and counteracts an increasing distance between the supporting arms (1, 2, 34, 37, 54, 57).Type: GrantFiled: April 11, 2013Date of Patent: February 7, 2017Assignee: Thyssenkrupp Steel Europe AGInventors: Marc Blumenau, Frank Eisner, Christopher Gusek, Fred Jindra, Rudolf Schoenenberg, Bert-Reiner Willeke, Tobias Denner, Christian Klatt, Jens Wemhoener
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Publication number: 20160043046Abstract: Methods for wet etching a UBM layer and the resulting devices are disclosed. Embodiments may include patterning metal bumps on a wafer that has at least two metal layers thereon; exposing the wafer to a first acid solution to remove a portion of a first of the two metal layers exposed by the patterning of the metal bumps; and exposing the wafer to a second acid solution to remove a portion a second of the two metal layers exposed by the patterning of the metal bumps and the exposure of the wafer to the first acid solution, wherein an undercut below the metal bumps, formed by removal of the portions of the first and second metal layers, is less than 1.5 microns.Type: ApplicationFiled: October 16, 2015Publication date: February 11, 2016Inventors: Tanya Andreeva ATANASOVA, Reiner WILLEKE, Anh Ngoc DUONG
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Patent number: 9214436Abstract: Methods for wet etching a UBM layer and the resulting devices are disclosed. Embodiments may include patterning metal bumps on a wafer that has at least two metal layers thereon; exposing the wafer to a first acid solution to remove a portion of a first of the two metal layers exposed by the patterning of the metal bumps; and exposing the wafer to a second acid solution to remove a portion a second of the two metal layers exposed by the patterning of the metal bumps and the exposure of the wafer to the first acid solution, wherein an undercut below the metal bumps, formed by removal of the portions of the first and second metal layers, is less than 1.5 microns.Type: GrantFiled: February 4, 2014Date of Patent: December 15, 2015Assignee: GLOBALFOUNDRIES INC.Inventors: Tanya Andreeva Atanasova, Reiner Willeke, Anh Ngoc Duong
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Patent number: 9159683Abstract: Methods for etching copper in the fabrication of integrated circuits are disclosed. In one exemplary embodiment, a method for fabricating an integrated circuit includes providing an integrated circuit structure including a copper bump structure and a copper seed layer underlying and adjacent to the copper bump structure and etching the seed layer selective to the copper bump structure using a wet etching chemistry consisting of H3PO4 in a volume percentage of about 0.07 to about 0.36, H2O2 in a volume percentage of about 0.1 to about 0.7, and a remainder of H2O, and optionally NH4OH.Type: GrantFiled: February 10, 2014Date of Patent: October 13, 2015Assignees: GLOBALFOUNDRIES, INC., INTERMOLECULAR, INC.Inventors: Reiner Willeke, Tanya Atanasova, Anh Duong, Greg Nowling
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Publication number: 20150228595Abstract: Methods for etching copper in the fabrication of integrated circuits are disclosed. In one exemplary embodiment, a method for fabricating an integrated circuit includes providing an integrated circuit structure including a copper bump structure and a copper seed layer underlying and adjacent to the copper bump structure and etching the seed layer selective to the copper bump structure using a wet etching chemistry consisting of H3PO4 in a volume percentage of about 0.07 to about 0.36, H2O2 in a volume percentage of about 0.1 to about 0.7, and a remainder of H2O, and optionally NH4OH.Type: ApplicationFiled: February 10, 2014Publication date: August 13, 2015Applicants: Intermolecular Inc., GLOBALFOUNDRIES Inc.Inventors: Reiner Willeke, Tanya Atanasova, Anh Duong, Greg Nowling
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Publication number: 20150221605Abstract: Methods for wet etching a UBM layer and the resulting devices are disclosed. Embodiments may include patterning metal bumps on a wafer that has at least two metal layers thereon; exposing the wafer to a first acid solution to remove a portion of a first of the two metal layers exposed by the patterning of the metal bumps; and exposing the wafer to a second acid solution to remove a portion a second of the two metal layers exposed by the patterning of the metal bumps and the exposure of the wafer to the first acid solution, wherein an undercut below the metal bumps, formed by removal of the portions of the first and second metal layers, is less than 1.5 microns.Type: ApplicationFiled: February 4, 2014Publication date: August 6, 2015Applicant: GLOBALFOUNDRIES Inc.Inventors: Tanya Andreeva ATANASOVA, Reiner WILLEKE, Anh Ngoc DUONG
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Publication number: 20150068454Abstract: The invention relates to a device for strip guidance in a hot medium, comprising a deflection roller (3, 38) mounted on supporting arms (1, 2, 34, 37, 54, 57) and a carrier device holding the supporting arms (1, 2, 34, 37, 54, 57). The device is characterized in that one of the supporting arms (1, 2, 34, 37, 54, 57) is mounted on the carrier device by means of a floating bearing (5), wherein the floating bearing (5) allows the mounted supporting arm on the carrier device to move parallel to the longitudinal direction of the deflection roller (3, 38), and in that an elastic counter element (12), which acts parallel to the longitudinal direction of the deflection roller (3, 38) upon the supporting arm (1, 2, 34, 37, 54, 57) mounted on the floating bearing (5), is present and counteracts an increasing distance between the supporting arms (1, 2, 34, 37, 54, 57).Type: ApplicationFiled: April 11, 2013Publication date: March 12, 2015Inventors: Marc Blumenau, Frank Eisner, Christopher Gusek, Fred Jindra, Rudolf Schoenenberg, Bert-Reiner Willeke, Tobias Denner, Christian Klatt, Jens Wemhoener
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Publication number: 20150045195Abstract: The invention relates to a device for strip guidance in a hot medium, comprising a deflection roller (3, 38) which has two roller pins (23, 39) and is mounted to supporting arms (1, 2, 34, 37, 54, 57) by means of ceramic journal bearings (20, 31), wherein the journal bearings (20, 31) are in each case arranged in a bearing receptacle (45, 55) of the associated supporting arm (1, 2, 34, 37, 54, 57). The invention is characterized in that at least one of the journal bearings (20, 31) in its associated supporting arm (1, 2, 34, 37, 54, 57) is fixed in the bearing receptacle (45, 55) by means of a force-fit that engages on the outer edge of the journal bearing (20, 31) and balances the different heat expansion coefficients of the journal bearings (20, 31) and the bearing receptacle (45, 55).Type: ApplicationFiled: April 11, 2013Publication date: February 12, 2015Inventors: Marc Blumenau, Frank Eisner, Christopher Gusek, Fred Jindra, Rudolf Schoenenberg, Bert-Reiner Willeke, Tobias Denner, Christian Klatt, Jens Wemhoener
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Publication number: 20130017681Abstract: Generally, the subject matter disclosed herein relates to methods for forming modern sophisticated semiconductor devices, and more specifically, methods wherein substantially lead-free solder bumps may be formed above a contact layer of a semiconductor chip. One illustrative method disclosed herein includes forming a solder bump above a metallization layer of a semiconductor device, removing an oxide film from a surface of the solder bump, and, after removing the oxide film, performing a solder bump reflow process in a reducing ambient to reflow the solder bump.Type: ApplicationFiled: July 12, 2011Publication date: January 17, 2013Applicant: GLOBALFOUNDRIES INC.Inventors: Reiner Willeke, Sören Zenner