Patents by Inventor Ruediger Kellmann

Ruediger Kellmann 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: 20150179859
    Abstract: Manufacture for an improved stacked-layered thin film solar cell. Solar cell has reduced absorber thickness and an improved back contact for Copper Indium Gallium Selenide solar cells. The back contact provides improved reflectance particularly for infrared wavelengths while still maintaining ohmic contact to the semiconductor absorber. This reflectance is achieved by producing a back contact having a highly reflecting metal separated from an absorbing layer with a dielectric layer.
    Type: Application
    Filed: March 4, 2015
    Publication date: June 25, 2015
    Applicant: International Business Machines Corporation
    Inventors: Hans-Juergen Eickelmann, Michael Haag, Ruediger Kellmann, Markus Schmidt, Johannes Windeln
  • Publication number: 20150178651
    Abstract: Disclosed is an apparatus that includes an identifying module, a survey module, an analytics module, and a ranking module. The identifying module identifies selected users, wherein the selected users are those users that have an awareness of factors that potentially affect a supply chain. The survey module administers a supply chain screening survey, which includes groups of intercorrelated questions, to the selected users and receives survey answers from the selected users. The analytics module performs a modified Cronbach-alpha analysis on the survey answers from the selected users in order to generate a response consistency rating for each of the selected users. The modified Cronbach-alpha analysis includes determining, for each one of the selected users, consistency between selected users of the survey answers within each group of intercorrelated questions. The ranking module assigns a reliability rank to each of the selected users based on their response consistency rating.
    Type: Application
    Filed: December 19, 2013
    Publication date: June 25, 2015
    Applicant: International Business Machines Corporation
    Inventors: Hans-Juergen Eickelmann, Glenn C. Godoy, Chester Dennis Karwatowski, Ruediger Kellmann, Wai Mon Ma, Karen Nan Toger
  • Publication number: 20150162463
    Abstract: A photovoltaic cell with reduced shading and series resistance for increased efficiency. A contact grid containing a set of optical structures is embedded into a substrate. An array of electrical contacts is aligned and in electrical communication with the optical structures and provides electrical communication between the active layer and the substrate.
    Type: Application
    Filed: February 13, 2015
    Publication date: June 11, 2015
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Michael Haag, Ruediger Kellmann, Markus Schmidt
  • Publication number: 20150096176
    Abstract: An absorber device comprises a substrate; one or more thin film radiation absorbers arranged on the substrate; an integrated optical system, comprising at least one first optical element; a cover medium arranged above the substrate and the one or more radiation absorbers. The at least one first optical element and at least one corresponding one of the one or more radiation absorbers are aligned with respect to their optical axis, such that an incoming radiation is directed onto the one or more radiation absorbers by the optical system. A method of manufacturing an absorber device is also provided.
    Type: Application
    Filed: October 20, 2014
    Publication date: April 9, 2015
    Inventors: Hans-Juergen Eickelmann, Harold J. Hovel, Ruediger Kellmann, Hartmut Kuehl, Markus Schmidt, Steven E. Steen
  • Publication number: 20150030283
    Abstract: An absorber device comprises a substrate; one or more thin film radiation absorbers arranged on the substrate; an integrated optical system, comprising at least one first optical element; a cover medium arranged above the substrate and the one or more radiation absorbers. The at least one first optical element and at least one corresponding one of the one or more radiation absorbers are aligned with respect to their optical axis, such that an incoming radiation is directed onto the one or more radiation absorbers by the optical system. A method of manufacturing an absorber device is also provided.
    Type: Application
    Filed: July 1, 2014
    Publication date: January 29, 2015
    Inventors: Hans-Juergen Eickelmann, Harold J. Hovel, Ruediger Kellmann, Hartmut Kuehl, Markus Schmidt, Steven E. Steen
  • Publication number: 20150024542
    Abstract: Use of chemical mechanical polishing (CMP) and/or pure mechanical polishing to separate sub-cells in a thin film solar cell. In one embodiment the CMP is only used to separate the active, thin film layer into sub-cells, with scribing still being used to achieve sub-cell separation in conductive layers above and below the active, thin film layer. Also, the active layer may be placed over a series of protrusions so that the CMP removes the active layer that is over the protrusion, while leaving intact the flat, planar portions of the active layer. In this way, the removed active layer, from over the protrusions then becomes the division between sub-cells in the active layer.
    Type: Application
    Filed: January 28, 2014
    Publication date: January 22, 2015
    Applicant: International Business Machines Corporation
    Inventors: Hans-Juergen Eickelmann, Ruediger Kellmann, Markus Schmidt
  • Publication number: 20150020863
    Abstract: Use of chemical mechanical polishing (CMP) and/or pure mechanical polishing to separate sub-cells in a thin film solar cell. In one embodiment the CMP is only used to separate the active, thin film layer into sub-cells, with scribing still being used to achieve sub-cell separation in conductive layers above and below the active, thin film layer. Also, the active layer may be placed over a series of protrusions so that the CMP removes the active layer that is over the protrusion, while leaving intact the flat, planar portions of the active layer. In this way, the removed active layer, from over the protrusions then becomes the division between sub-cells in the active layer.
    Type: Application
    Filed: July 22, 2013
    Publication date: January 22, 2015
    Applicant: International Business Machines Corporation
    Inventors: Hans-Juergen Eickelmann, Ruediger Kellmann, Markus Schmidt
  • Publication number: 20140102509
    Abstract: Manufacture for an improved stacked-layered thin film solar cell. Solar cell has reduced absorber thickness and an improved back contact for Copper Indium Gallium Selenide solar cells. The back contact provides improved reflectance particularly for infrared wavelengths while still maintaining ohmic contact to the semiconductor absorber. This reflectance is achieved by producing a back contact having a highly reflecting metal separated from an absorbing layer with a dielectric layer.
    Type: Application
    Filed: October 12, 2012
    Publication date: April 17, 2014
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Hans-Juergen Eickelmann, Michael Haag, Ruediger Kellmann, Markus Schmidt, Johannes Windeln
  • Publication number: 20140053899
    Abstract: Thickening a contact grid of a solar cell for increased efficiency. A mold containing soldering material is heated. The mold is aligned with the contact grid such that the soldering material is in physical contact with the contact grid. The mold is re-heated, transferring the solder material from the mold to the contact grid to create a thickened contact grid.
    Type: Application
    Filed: August 22, 2012
    Publication date: February 27, 2014
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Michael Haag, Ruediger Kellmann, Markus Schmidt
  • Publication number: 20140041719
    Abstract: A photovoltaic cell with reduced shading and series resistance for increased efficiency. A contact grid containing a set of optical structures is embedded into a substrate. An array of electrical contacts is aligned and in electrical communication with the optical structures and provides electrical communication between the active layer and the substrate.
    Type: Application
    Filed: August 13, 2012
    Publication date: February 13, 2014
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Michael Haag, Ruediger Kellmann, Markus Schmidt
  • Publication number: 20130061401
    Abstract: A solvent wash employing a polar washing solvent is employed to effectively remove the sizing agent on a woven glass cloth, while retaining the tensile strength of the woven glass cloth. Loss of tensile strength of the woven glass cloth due to removal of a sizing agent from the woven glass cloth is compensated by simultaneous or subsequent deposition of a coupling agent on surfaces from which the sizing agent is removed. The concurrent removal of the sizing agent and deposition of the coupling agent provides an effective removal of the sizing agent while maintaining sufficient tensile strength to structurally support the woven glass cloth. Further, integration of the removal of the sizing agent and the simultaneous deposition of the coupling agent in the washing solvent in a same processing step can provide a cost-effective manufacturing method for forming a finished woven glass cloth.
    Type: Application
    Filed: September 13, 2011
    Publication date: March 14, 2013
    Applicants: PARK ELECTROCHEMICAL CORP., INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Dylan J. Boday, Michael Haag, Ruediger Kellmann, Joseph Kuczynski, Markus Schmidt, Johannes Windeln, Silvio Bertling