Patents Examined by Cybille Delacroix-Muirheid
  • Patent number: 5259938
    Abstract: A liquid phase process for preparing .omega.-haloperfluoroacid chlorides by the photo oxidation of polyfluoroalkyl mono- and di-chloromethanes in the presence of chlorine using light wavelengths greater than 280 nm.
    Type: Grant
    Filed: September 15, 1992
    Date of Patent: November 9, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Hsu-Nan Huang
  • Patent number: 5256265
    Abstract: This process for oxide reactions by radiofrequency--char catalysis utilizes the unique chemical reactivity of an RF-energized char surface to enhance desirable chemical reactions involving oxides. Decomposition of selected oxide constituents from a gas stream is a typical application.
    Type: Grant
    Filed: November 12, 1992
    Date of Patent: October 26, 1993
    Inventor: Chang Y. Cha
  • Patent number: 5246554
    Abstract: This process to remove gas oxides from flue gas utilizes adsorption on a char bed subsequently followed by radiofrequency catalysis enhancing such removal through selected reactions. Common gas oxides include SO.sub.2 and NO.sub.x.
    Type: Grant
    Filed: March 18, 1991
    Date of Patent: September 21, 1993
    Inventor: Chang Y. Cha
  • Patent number: 5228960
    Abstract: Disclosed herein are methodologies for the Capillary Electrophoretic Immunosubtraction ("CEI") of samples. In a preferred embodiment, CEI of a sample comprising constituent parts to be separated comprises the steps of: (1) separating a first aliquot of the sample into constituent parts by capillary electrophoretic techniques, and detecting said parts; (2) admixing a second aliquot of said sample with at least one specific binding partner to a constituent of said sample, said specific binding partner capable of being substantially removed from said aliquot; (3) separating said second aliquot into constituent parts by capillary electrophoretic techniques and detecting said parts; and (4) comparing the separated constituent parts of step (3) with the separated constituent parts of step (1).
    Type: Grant
    Filed: July 17, 1992
    Date of Patent: July 20, 1993
    Assignee: Beckman Instruments, Inc.
    Inventors: Cheng-Ming Liu, Hann-Ping Wang, Fu-Tai A. Chen, James C. Sternberg, Gerald L. Klein