Patents by Inventor Michael HAMPEL

Michael HAMPEL 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).

  • Cryogenic refrigeration system and cryogenic pump
    Patent number: 12584670
    Abstract: A cryogenic refrigeration system and method are disclosed. The cryogenic refrigeration system comprises: a refrigerator unit comprising an expansion unit and a variable speed compressor configured to compress refrigerant. The variable speed compressor is configured to receive refrigerant from the refrigerator unit via a lower pressure line and to supply compressed refrigerant to the refrigerator unit via a higher pressure line. There is also control circuitry configured to control the variable speed compressor to maintain a power consumption of the variable speed compressor below a predetermined threshold value, by during cooldown controlling the compressor to initially operate at a reduced frequency and later increasing a frequency of operation of the variable speed compressor such that the variable speed compressor operates at a higher frequency.
    Type: Grant
    Filed: December 22, 2021
    Date of Patent: March 24, 2026
    Assignee: Leybold Dresden GMBH
    Inventors: Michael Hampel, Sirko Kamusella
  • CRYOGENIC REFRIGERATION SYSTEM AND CRYOGENIC PUMP
    Publication number: 20240302088
    Abstract: A cryogenic refrigeration system and method are disclosed. The cryogenic refrigeration system comprises: a refrigerator unit comprising an expansion unit and a variable speed compressor configured to compress refrigerant. The variable speed compressor is configured to receive refrigerant from the refrigerator unit via a lower pressure line and to supply compressed refrigerant to the refrigerator unit via a higher pressure line. There is also control circuitry configured to control the variable speed compressor to maintain a power consumption of the variable speed compressor below a predetermined threshold value, by during cooldown controlling the compressor to initially operate at a reduced frequency and later increasing a frequency of operation of the variable speed compressor such that the variable speed compressor operates at a higher frequency.
    Type: Application
    Filed: December 22, 2021
    Publication date: September 12, 2024
    Inventors: Michael Hampel, Sirko Kamusella
  • Method for producing L-methionine
    Patent number: 11034985
    Abstract: The present invention relates to a method for producing L-methionine in which a microorganism is cultured in the presence of L-homoserine and methyl mercaptan, a salt of the same or dimethyl disulfide whereby the L-methionine is accumulated in the culture medium.
    Type: Grant
    Filed: November 1, 2016
    Date of Patent: June 15, 2021
    Assignee: EVONIK OPERATIONS GMBH
    Inventors: Ines Ochrombel, Daniel Fischer, Brigitte Bathe, Marleen Hasselmeyer, Michael Hampel, Joanne Pedall
  • METHOD FOR PRODUCING L-METHIONINE
    Publication number: 20180346946
    Abstract: The present invention relates to a method for producing L-methionine in which a microorganism is cultured in the presence of L-homoserine and methyl mercaptan, a salt of the same or dimethyl disulfide whereby the L-methionine is accumulated in the culture medium.
    Type: Application
    Filed: November 1, 2016
    Publication date: December 6, 2018
    Applicant: EVONIK DEGUSSA GMBH
    Inventors: Ines OCHROMBEL, Daniel FISCHER, Brigitte BATHE, Marleen HASSELMEYER, Michael HAMPEL, Joanne PEDALL