Patents by Inventor Boris V. Yudin

Boris V. Yudin 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).

  • High efficiency throttle cryogenic refrigerator based on one stage compressor
    Patent number: 5706663
    Abstract: Mixed refrigerants provide refrigeration at cryogenic temperatures with throttling cycles operating with a one-stage compressor. The refrigerants include noncondensable gases such as helium, neon, or hydrogen to increase the overall cooling capacity of a refrigeration system at the same refrigeration temperature which is attainable without such noncondensable gases. More refrigeration can be produced with existing systems at temperatures above the normal boiling point of nitrogen or argon by adding, for example, helium, than for refrigerant blends without helium. By increasing the return pressure value of the refrigeration cycle in relation to the molar percent of helium present in the refrigerant, a constant refrigeration temperature may be maintained which exhibits greater stability than prior systems operating at the same temperature without helium enrichment.
    Type: Grant
    Filed: November 20, 1995
    Date of Patent: January 13, 1998
    Assignee: APD Cryogenics, Inc.
    Inventors: Mikhail Boiarski, Boris V. Yudin, Ralph C. Longsworth, Ajay N. Khatri
  • Mixed gas R-12 refrigeration apparatus
    Patent number: 5622644
    Abstract: A mixed gas refrigerant for use as a replacement for CFC refrigerants, and specifically, for R-12, which includes at least three components including R-134a, R-124, and n-butane, with the n-butane being at least present in trace amounts and specifically between 1% and up to 4%.
    Type: Grant
    Filed: May 24, 1995
    Date of Patent: April 22, 1997
    Assignee: Intercool Energy
    Inventors: Richard Stevenson, Mikhail Boyarsky, Boris V. Yudin, Oleg N. Podcherniev
  • Substitute refrigerant for dichlorodifluoromethane refrigeration systems
    Patent number: 5425890
    Abstract: A mixed gas refrigerant for use as a replacement for CFC refrigerants, and specifically, for R-12, which includes at least three components including R-134a, R-124, and n-butane.
    Type: Grant
    Filed: January 11, 1994
    Date of Patent: June 20, 1995
    Assignee: APD Cryogenics, Inc.
    Inventors: Boris V. Yudin, Richard Stevenson, Mikhail Boyarsky, Oleg N. Podcherniev