Patents by Inventor James P. Lavelle

James P. Lavelle 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).

  • Method for enhancing mineral oil miscibility and oil return
    Patent number: 8402778
    Abstract: The present invention relates to a method for increasing the solubility of oils in refrigerant compositions within a system using a refrigerant compressed with a mechanical device by adding polyolester directly to the refrigerant followed by charging a mixture of the polyolester and refrigerant into the system (air conditioner, refrigerator, etc.). The present invention also relates to a method of optimizing mineral oil return in a system using a refrigerant compressed with a mechanical device and a method of cleansing heat exchange tubes of a system using a refrigerant compressed with a mechanical device by adding polyolesters directly to a refrigerant composition followed by charging a mixture of the polyolester and refrigerant into the system.
    Type: Grant
    Filed: March 31, 2008
    Date of Patent: March 26, 2013
    Assignee: National Refrigerants, Inc.
    Inventors: Robert W. Yost, James P. Lavelle, Umar M. Khokhar
  • Method for Enhancing Mineral Oil Miscibility and Oil Return
    Publication number: 20090241565
    Abstract: The present invention relates to a method for increasing the solubility of oils in refrigerant compositions within a system using a refrigerant compressed with a mechanical device by adding polyolester directly to the refrigerant followed by charging a mixture of the polyolester and refrigerant into the system (air conditioner, refrigerator, etc.). The present invention also relates to a method of optimizing mineral oil return in a system using a refrigerant compressed with a mechanical device and a method of cleansing heat exchange tubes of a system using a refrigerant compressed with a mechanical device by adding polyolesters directly to a refrigerant composition followed by charging a mixture of the polyolester and refrigerant into the system.
    Type: Application
    Filed: March 31, 2008
    Publication date: October 1, 2009
    Applicant: NATIONAL REFRIGERANTS, INC.
    Inventors: Robert W. YOST, James P. LAVELLE, Umar M. KHOKHAR
  • Inhibited 141b
    Patent number: 5169995
    Abstract: Storage-stable compositions of 141b which are inhibited against decomposition with additives such as alpha-methylstyrene.
    Type: Grant
    Filed: October 9, 1991
    Date of Patent: December 8, 1992
    Assignee: Elf Atochem North America, Inc.
    Inventors: Richard M. Crooker, James P. Lavelle, Maher Y. Elsheikh