中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

48 records (took 0.024 seconds)

    13.
    发明专利
    未知

    公开(公告)号：DE69814035T2

    公开(公告)日：2003-10-23

    申请号：DE69814035

    申请日：1998-10-02

    Applicant: SYMYX TECHNOLOGIES INC

    Inventor： MATSIEV LEONID ,  BENNETT JAMES ,  MCFARLAND ERIC

    IPC: G01H13/00 ,  G01N5/04 ,  G01N9/00 ,  G01N29/02 ,  G01N29/036 ,  G01N29/34 ,  G01N29/42 ,  G01N29/44 ,  H03H9/19

    Abstract: A method and apparatus for measuring properties of a liquid composition includes a mechanical resonator, such as a thickness shear mode resonator or a tuning fork resonator, connected to a measurement circuit. The measurement circuit provides a variable frequency input signal to the tuning fork, causing the mechanical resonator to oscillate. To test the properties of a liquid composition, the mechanical resonator is placed inside a sample well containing a small amount of the liquid. The input signal is then sent to the mechanical resonator and swept over a selected frequency range, preferably less than 1 MHz to prevent the liquid being tested from exhibiting gel-like characteristics and causing false readings. The mechanical resonator's response over the frequency range depends on various characteristics of the liquid being tested, such as the temperature, viscosity, and other physical properties. Particular mechanical resonators, such as tuning fork resonators, can also be used to measure a liquid composition's electrical properties, such as the dielectric constant and conductivity, because the tuning fork's structure allows a high degree of electrical coupling between the tuning fork and the surrounding liquid. The mechanical resonator can be covered with a coating to impart additional special detection properties to the resonator, and multiple resonators can be attached together as a single sensor to obtain multiple frequency responses. The invention is particularly suitable for combinatorial chemistry applications, which require rapid analysis of chemical properties for screening.

    PARALLEL REACTOR WITH INTERNAL SENSING AND METHOD OF USING SAME
    16.
    发明专利
    PARALLEL REACTOR WITH INTERNAL SENSING AND METHOD OF USING SAME 未知

    公开(公告)号：CA2381014A1

    公开(公告)日：2000-02-24

    申请号：CA2381014

    申请日：1999-08-12

    Applicant: SYMYX TECHNOLOGIES INC

    Inventor： VAN BEEK JOHANNES A M ,  VAN ERDEN LYNN ,  HAJDUK DAMIAN A ,  MANSKY PAUL ,  TURNER HOWARD ,  MATSIEV LEONID ,  DALES G CAMERON ,  MCFARLAND ERIC ,  NIELSEN RALPH B ,  WANG PEI

    IPC: B01J19/00 ,  B01J19/18 ,  G01N31/00 ,  G01N33/00 ,  G05B19/042 ,  G05D23/19

    Abstract: Devices and methods for controlling and monitoring the progress and properties of multiple reactions are disclosed. The method and apparatus are especially useful for synthesizing, screening, and characterizing combinatorial libraries, but also offer significant advantages over conventional experimental reactors as well. The apparatus generally includes multiple vessels for containing reaction mixtures, and systems for controlling the stirring rate and temperature of individual reaction mixtures or groups of reaction mixtures. In addition, the apparatus may include provisions for independently controlling pressure in each vessel, and a system for injecting liquids into the vessels at a pressure different than ambient pressure. In situ monitoring of individual reaction mixtures provides feedback for process controllers, and also provides data for determining reaction rates, product yields, and various properties of the reaction products, including viscosity and molecular weight. Computer-based methods are disclosed for process monitoring and control, and for data display and analysis.

    PARALLEL REACTOR WITH INTERNAL SENSING AND METHOD OF USING SAME
    20.
    发明专利
    PARALLEL REACTOR WITH INTERNAL SENSING AND METHOD OF USING SAME 未知

    公开(公告)号：CA2381014C

    公开(公告)日：2003-07-08

    申请号：CA2381014

    申请日：1999-08-12

    Applicant: SYMYX TECHNOLOGIES INC

    Inventor： MATSIEV LEONID ,  TURNER HOWARD ,  DALES G CAMERON ,  WANG PEI ,  VAN ERDEN LYNN ,  MANSKY PAUL ,  MCFARLAND ERIC ,  NIELSEN RALPH B ,  HAJDUK DAMIAN A ,  VAN BEEK JOHANNES A M

    IPC: B01J19/00 ,  B01J19/18 ,  G01N31/00 ,  G01N33/00 ,  G05B19/042 ,  G05D23/19

    Abstract: Devices and methods for controlling and monitoring the progress and properties of multiple reactions are disclosed. The method and apparatus are especially useful for synthesizing, screening, and characterizing combinatorial libraries, but also offer significant advantages over conventional experimental reactors as well. The apparatus generally includes multiple vessels for containing reaction mixtures, and systems for controlling the stirring rate and temperature of individual reaction mixtures or groups of reaction mixtures. In addition, the apparatus may include provisions for independently controlling pressure in each vessel, and a system for injecting liquids into the vessels at a pressure different than ambient pressure. In situ monitoring of individual reaction mixtures provides feedback for process controllers, and also provides data for determining reaction rates, product yields, and various properties of the reaction products, including viscosity and molecular weight. Computer-based methods are disclosed for process monitoring and control, and for data display and analysis.

Patent Agency Ranking