Patents by Inventor Stephen Rahn

Stephen Rahn 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).

  • Patent number: 8288636
    Abstract: The invention is for a solid body type guitar having a pickup selector switch located closely adjacent to the volume controls. The invention is a specially developed pickup selector switch tip knob having an extension arm which is contoured to conveniently fit the human finger for easy manipulation of the pickup selector switch. The contoured extension arm can have one or both sides contoured to accommodate easy pickup selection from either direction with the guitar player's hand. The invention can be mounted on the pickup selector switch post such that the extension arm is facing either toward the guitar strings or away from the guitar strings.
    Type: Grant
    Filed: June 27, 2011
    Date of Patent: October 16, 2012
    Inventor: Stephen Rahn
  • Patent number: 7063921
    Abstract: The invention relates to a method for the production of masks, in particular for the production of alternating phase shift masks (1), or of chromeless phase shift masks or phase shift masks structured by quartz etching, respectively, as well as to a mask (1), in particular photomask, for the production of semiconductor devices, comprising at least one product field area (6a) and a compensation structure (5) positioned outside the product field area (6a), wherein the compensation structure (5) comprises at least one electroconductive region (8b) that is electrically connected with the product field area (6a).
    Type: Grant
    Filed: September 22, 2003
    Date of Patent: June 20, 2006
    Assignee: Infineon Technologies AG
    Inventors: Wolfgang Dettman, Josef Mathuni, Oliver Fagerer, Bettina Schiessl, Stephen Rahn
  • Publication number: 20040115442
    Abstract: The invention relates to a method for the production of masks, in particular for the production of alternating phase shift masks (1), or of chromeless phase shift masks or phase shift masks structured by quartz etching, respectively, as well as to a mask (1), in particular photomask, for the production of semiconductor devices, comprising at least one product field area (6a) and a compensation structure (5) positioned outside the product field area (6a), wherein the compensation structure (5) comprises at least one electroconductive region (8b) that is electrically connected with the product field area (6a).
    Type: Application
    Filed: September 22, 2003
    Publication date: June 17, 2004
    Inventors: Wolfgang Dettman, Josef Mathuni, Oliver Fagerer, Bettina Schiessl, Stephen Rahn
  • Patent number: 6613642
    Abstract: A method for increasing the surface area of an original surface in a semiconductor device is disclosed. In an exemplary embodiment of the invention, the method includes forming a layered mask upon the original surface, the layered mask including a masking layer thereatop having a varying thickness. An isotropic etch is then applied to the layered mask, which isotropic etch further removes exposed portions of the original surface as the layered mask is removed. Thereby, the isotropic etch enhances the non-uniformity of the masking layer and creates a non-uniformity in planarity of the original surface.
    Type: Grant
    Filed: December 13, 2001
    Date of Patent: September 2, 2003
    Assignee: International Business Machines Corporation
    Inventors: Stephen Rahn, Irene McStay, Helmut Horst Tews, Uwe Schroeder, Stephan Kudelka, Rajarao Jammy
  • Publication number: 20030114005
    Abstract: A method for increasing the surface area of an original surface in a semiconductor device is disclosed. In an exemplary embodiment of the invention, the method includes forming a layered mask upon the original surface, the layered mask including a masking layer thereatop having a varying thickness. An isotropic etch is then applied to the layered mask, which isotropic etch further removes exposed portions of the original surface as the layered mask is removed. Thereby, the isotropic etch enhances the non-uniformity of the masking layer and creates a non-uniformity in planarity of the original surface.
    Type: Application
    Filed: December 13, 2001
    Publication date: June 19, 2003
    Applicant: International Business Machines Corporation
    Inventors: Stephen Rahn, Irene McStay, Helmut Horst Tews, Uwe Schroeder, Stephan Kudelka, Rajarao Jammy
  • Patent number: 6559002
    Abstract: In a process for making a DT DRAM structure, the improvement of providing a surface area enhanced DT below the collar region and node capacitance that does not shrink with decreasing groundrule/cell size, comprising: a) providing a semiconductor substrate having a collar region and an adjacent region below the collar region, the collar region having SiO deposited thereon; b) depositing a SiN liner on said collar region and on the region below the collar; c) depositing a layer of a-Si on the SiN liner to form a micromask; d) subjecting the structure from step c) to an anneal/oxidation step under a wet environment at a sufficient temperature to form a plurality of oxide dot hardmasks; e) subjecting the SiN liner to an etch selective to SiO; f) subjecting the structure from step e) to a Si transfer etch using a chemical dry etch (CDE) selective to SiO to create rough Si surface; g) stripping SiO and the SiN; and forming a node and collar deposition.
    Type: Grant
    Filed: December 31, 2001
    Date of Patent: May 6, 2003
    Assignee: Infineon Technologies North America Corp.
    Inventors: Stephan Kudelka, Helmut Horst Tews, Stephen Rahn, Irene McStay, Uwe Schroeder
  • Patent number: 6437401
    Abstract: A trench capacitor structure for improved charge retention and method of manufacturing thereof are provided. A trench is formed in a p-type conductivity semiconductor substrate. An isolation collar is located in an upper portion of the trench. The substrate adjacent the upper portion of the trench contains a first n+ type conductivity region and a second n+ type conductivity region. These regions each abut a wall of the trench and are separated vertically by a portion of the p-type conductivity semiconductor substrate. A void which encircles the perimeter of the trench is formed into the wall of the trench and is located in the substrate between the first and second n+ type conductivity regions.
    Type: Grant
    Filed: April 3, 2001
    Date of Patent: August 20, 2002
    Assignees: Infineon Technologies AG, International Business Machines Corporation
    Inventors: Jack A. Mandelman, Stephan Kudelka, Andreas Knorr, Stephen Rahn, Helmut Tews, Michael Wise