Wine Or Alcoholic Beverages Patents (Class 436/24)
  • Patent number: 4935346
    Abstract: A method for determining the presence of an analyte in a fluid is described along with various components of an apparatus specifically designed to carry out the method. The method involves taking a reflectance reading from one surface of an inert porous matrix impregnated with a reagent that will interact with the analyte to produce a light-absorbing reaction product when the fluid being analyzed is applied to another surface and migrates through the matrix to the surface being read. Reflectance measurements are made at two separate wavelengths in order to eliminate interferences, and a timing circuit is triggered by an initial decrease in reflectance by the wetting of the surface whose reflectance is being measured by the fluid which passes through the inert matrix. The method and apparatus are particularly suitable for the measurement of glucose levels in blood without requiring separation of red blood cells from serum or plasma.
    Type: Grant
    Filed: August 13, 1986
    Date of Patent: June 19, 1990
    Assignee: Lifescan, Inc.
    Inventors: Roger Phillips, Geoffery McGarraugh, Frank Jurik, Ray Underwood
  • Patent number: 4751185
    Abstract: An analysis method for hop bittering components which comprises a step of separating and analysing hop bittering components by liquid chromatography, characterized by trapping hop bittering components contained in a sample to be measured in a precolumn consisting of an ester type stationary phase for reversed phase chromatography by passing the sample through the precolumn by means of an acidic aqueous solution containing a polar organic solvent, introducing an eluent for reversed phase chromatography capable of eluting the bittering components into the precolumn, and subjecting the eluate to reversed phase liquid chromatography; and an analysis equipment which is suitable for conducting the above method.
    Type: Grant
    Filed: September 15, 1986
    Date of Patent: June 14, 1988
    Assignees: Shimadzu Corporation, Suntory Limited
    Inventors: Miyoko Ono, Youichi Kakudo, Yasuo Ishida, Suehiro Ueda
  • Patent number: 4550082
    Abstract: A process is provided for the detection and qualitative and quantitive differentiation of naturally deuterated molecules.This process consists in (a) preparing a standard by mixing a commercially available hydrocarbonic product with its artifically deuterated analogue, (b) introducing this standard into the measuring cell of the RMN analysis apparatus; (c) adding the product to be analyzed to the cell and (d) introducing the cell into the RMN (D) apparatus and recording the spectrum of the deuterium which is compared with the RMN (D) spectra of products of known geographical origin and from known chemical and/or biochemical sources, made beforehand with the same standard.
    Type: Grant
    Filed: December 1, 1982
    Date of Patent: October 29, 1985
    Assignee: Centre National de la Recherche Scientifique
    Inventors: Gerard J. Martin, Maryvonne L. Martin