Patents by Inventor Stefan SCHMULT

Stefan SCHMULT 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: 12094964
    Abstract: An electronic circuit having a semiconductor device is provided that includes a heterostructure, the heterostructure including a first layer of a compound semiconductor to which a second layer of a compound semiconductor adjoins in order to form a channel for a 2-dimensional electron gas (2DEG), wherein the 2-dimensional electron gas is not present. In aspects, an electronic circuit having a semiconductor device is provided that includes a III-V heterostructure, the III-V heterostructure including a first layer including GaN to which a second layer adjoins in order to form a channel for a 2-dimensional electron gas (2DEG), and having a purity such that the 2-dimensional electron gas is not present. It is therefore advantageous for the present electronic circuit to be enclosed such that, in operation, no light of wavelengths of less than 400 nm may reach the III-V heterostructure and free charge carriers may be generated by these wavelengths.
    Type: Grant
    Filed: June 9, 2023
    Date of Patent: September 17, 2024
    Assignees: NAMLAB GGMBH, TECHNISCHE UNIVERSITÄT DRESDEN
    Inventors: Stefan Schmult, Andre Wachowiak, Alexander Ruf
  • Publication number: 20230327012
    Abstract: An electronic circuit having a semiconductor device is provided that includes a heterostructure, the heterostructure including a first layer of a compound semiconductor to which a second layer of a compound semiconductor adjoins in order to form a channel for a 2-dimensional electron gas (2DEG), wherein the 2-dimensional electron gas is not present. In aspects, an electronic circuit having a semiconductor device is provided that includes a III-V heterostructure, the III-V heterostructure including a first layer including GaN to which a second layer adjoins in order to form a channel for a 2-dimensional electron gas (2DEG), and having a purity such that the 2-dimensional electron gas is not present. It is therefore advantageous for the present electronic circuit to be enclosed such that, in operation, no light of wavelengths of less than 400 nm may reach the III-V heterostructure and free charge carriers may be generated by these wavelengths.
    Type: Application
    Filed: June 9, 2023
    Publication date: October 12, 2023
    Inventors: Stefan SCHMULT, Andre WACHOWIAK, Alexander RUF
  • Patent number: 11699749
    Abstract: An electronic circuit having a semiconductor device is provided that includes a heterostructure, the heterostructure including a first layer of a compound semiconductor to which a second layer of a compound semiconductor adjoins in order to form a channel for a 2-dimensional electron gas (2DEG), wherein the 2-dimensional electron gas is not present. In aspects, an electronic circuit having a semiconductor device is provided that includes a III-V heterostructure, the III-V heterostructure including a first layer including GaN to which a second layer adjoins in order to form a channel for a 2-dimensional electron gas (2DEG), and having a purity such that the 2-dimensional electron gas is not present. It is therefore advantageous for the present electronic circuit to be enclosed such that, in operation, no light of wavelengths of less than 400 nm may reach the III-V heterostructure and free charge carriers may be generated by these wavelengths.
    Type: Grant
    Filed: July 11, 2019
    Date of Patent: July 11, 2023
    Assignees: NAMLAB GGMBH, TECHNISCHE UNIVERSITÄT DRESDEN
    Inventors: Stefan Schmult, Andre Wachowiak, Alexander Ruf
  • Publication number: 20200020790
    Abstract: An electronic circuit having a semiconductor device is provided that includes a heterostructure, the heterostructure including a first layer of a compound semiconductor to which a second layer of a compound semiconductor adjoins in order to form a channel for a 2-dimensional electron gas (2DEG), wherein the 2-dimensional electron gas is not present. In aspects, an electronic circuit having a semiconductor device is provided that includes a III-V heterostructure, the III-V heterostructure including a first layer including GaN to which a second layer adjoins in order to form a channel for a 2-dimensional electron gas (2DEG), and having a purity such that the 2-dimensional electron gas is not present. It is therefore advantageous for the present electronic circuit to be enclosed such that, in operation, no light of wavelengths of less than 400 nm may reach the III-V heterostructure and free charge carriers may be generated by these wavelengths.
    Type: Application
    Filed: July 11, 2019
    Publication date: January 16, 2020
    Inventors: Stefan SCHMULT, Andre WACHOWIAK, Alexander RUF