Patents by Inventor Volkmar Sommer

Volkmar Sommer 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: 11037862
    Abstract: The invention relates to a method for electrically contacting a component (10) (for example a power component and/or a (semiconductor) component having at least one transistor, preferably an IGBT (insulated-gate bipolar transistor)) having at least one contact (40, 50), at least one open-pored contact piece (60, 70) is galvanically (electrochemically or free of external current) connected to at least one contact (40, 50). In this way, a component module is achieved. The contact (40, 50) is preferably a flat part or has a contact surface, the largest planar extent thereof being greater than an extension of the contact (40, 50) perpendicular to said contact surface. The temperature of the galvanic connection is at most 100° C., preferably at most 60° C., advantageously at most 20° C. and ideally at most 5° C. and/or deviates from the operating temperature of the component by at most 50° C., preferably by at most 20° C., in particular by at most 10° C. and ideally by at most 5° C., preferably by at most 2° C.
    Type: Grant
    Filed: May 23, 2016
    Date of Patent: June 15, 2021
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Hubert Baueregger, Volkmar Sommer, Stefan Stegmeier
  • Publication number: 20180158757
    Abstract: The invention relates to a method for electrically contacting a component (10) (for example a power component and/or a (semiconductor) component having at least one transistor, preferably an IGBT (insulated-gate bipolar transistor)) having at least one contact (40, 50), at least one open-pored contact piece (60, 70) is galvanically (electrochemically or free of external current) connected to at least one contact (40, 50). In this way, a component module is achieved. The contact (40, 50) is preferably a flat part or has a contact surface, the largest planar extent thereof being greater than an extension of the contact (40, 50) perpendicular to said contact surface. The temperature of the galvanic connection is at most 100° C., preferably at most 60° C., advantageously at most 20° C. and ideally at most 5° C. and/or deviates from the operating temperature of the component by at most 50° C., preferably by at most 20° C., in particular by at most 10° C. and ideally by at most 5° C., preferably by at most 2° C.
    Type: Application
    Filed: May 23, 2016
    Publication date: June 7, 2018
    Inventors: Hubert Baueregger, Volkmar Sommer, Stefan Stegmeier
  • Publication number: 20050077186
    Abstract: The invention relates to an electrolysis bath for electrodepositing silver-tin alloys that, in addition to water serving as a solvent with a pH value of less than 1.5, contains a water-soluble silver compound, a water-soluble tin compound and an organic complexing agent. In order to obtain a stable electrolysis bath that enables the homogenous deposition of a compact tin-silver alloy with any type of composition, an aliphatic complexing agent having a sulfide group and an amino group is used as a complexing agent, whereby the functional groups are bound to different carbon atoms.
    Type: Application
    Filed: November 6, 2002
    Publication date: April 14, 2005
    Inventors: Christian Hansen, Volkmar Sommer, Marc De Vogelaere