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| Number | Title | Issue Date |
| 5286177 | Fluid pump having floating reciprocating shaft A reciprocating fluid pump having a shaft which dynamically self-corrects angular misalignment between the shaft and its drive mechanism during reciprocative motions. A thrust bearing is utilized to take up axial loading of the shaft to allow the shaft to... | 02/15/1994 |
| 5206988 | Hybrid ultra-centrifuge rotor with balancing ring and method of manufacture A centrifuge rotor having a balancing ring integrally formed with and raised from the upper surface thereof is manufactured by removing material from the ring to balance the rotor in the upper plane. The balancing ring is on the same radius as the rotor t... | 05/04/1993 |
| 5208466 | Apparatus and method for aligning capillary column and detection optics An apparatus xxx method of aligning a capillary with respect to a radiation source. More particularly, the capillary is aligned with a laser beam for laser induced fluorescence detection. The light reflection/scatter pattern of the laser beam originating ... | 05/04/1993 |
| 5206568 | Coordinated control of stepper motors An automated multi-purpose analytical chemistry processing center and laboratory work station having a movable table for supporting microtiter plates and other fluid receptacles, a movable arm, and a modular mobile pod affixed for reciprocal movement alon... | 04/27/1993 |
| 5198091 | Capillary cartridge for electrophoresis A cartridge for holding a capillary for electrophoresis. The cartridge has a body defining a passage along which the capillary is threaded. Exits are provided on the body for extending the ends of the capillary to access external fluid sources. The same c... | 03/30/1993 |
| 5171206 | Optimal centrifugal separation Method and apparatus for controlling the angular velocity of a centrifuge tube containing a solute and a solvent to obtain desirable sedimentation behavior and/or diffusion behavior of the solute within the tube during centrifuge operations. In one embodi... | 12/15/1992 |
| 5152188 | Floating reciprocating shaft A reciprocating shaft which dynamically self-corrects angular misalignment between the shaft and its drive mechanism during reciprocative motions. A thrust bearing is utilized to take up axial loading of the shaft to allow the shaft to freely rotate on it... | 10/06/1992 |
| 5143850 | Detection of radioisotope labeled components in a capillary A detection and quantification technique for radioisotope labeled components separated in a capillary separation channel. The section of the separation channel containing the separated components is significantly cooled to substantially eliminate diffusio... | 09/01/1992 |
| 5139744 | Automated laboratory work station having module identification means An automated multi-purpose analytical chemistry processing center and laboratory work station having a movable table for supporting microtiter plates and other fluid receptacles, a movable arm, and a modular mobile pod affixed for reciprocal movement alon... | 08/18/1992 |
| 5125748 | Optical detection module for use in an automated laboratory work station An automated multi-purpose analytical chemistry processing center and laboratory work station having a movable table for supporting microtiter plates and other fluid receptacles, a movable arm, and a modular mobile pod affixed for reciprocal movement alon... | 06/30/1992 |
| 5098536 | Method of improving signal-to-noise in electropherogram A method and apparatus for improving signal to noise in an electropherogram acquired by electrophoresis. The migration time is remapped by binning the data with respect to migration time to improve signal to noise and peak resolution. The data points of t... | 03/24/1992 |
| 5080769 | Electrophoresis with electrode baffles A electrophoretic system in which nonconductive members are strategically positioned in the electrolyte tank to selectively affect the electric field of electrodes so as to obtain a desired electric field for efficient separation. The size, shape and loca... | 01/14/1992 |
| 5019348 | Automated chemical conversion unit in a peptide/protein sequenator An automated chemical conversion unit for use in a peptide/protein sequencing process. The improved conversion methodology decreases the time necessary for the conversion reaction chemistry of the specific derivative of the sequenced amino acid to a more ... | 05/28/1991 |
| 4997536 | Control of electrokinetic potential by treatment with redox agents Solid phases such as capillary tubes or solid supports used in chromatography, and in particular electrophoresis, are treated with oxidizing or reducing agents as needed to maintain or restore surface electrical charges or the lack thereof, which become m... | 03/05/1991 |
| 4974628 | Check valve cartridges with controlled pressure sealing A check valve cartridge insertable into a valve housing which is adapted to couple to a pump fluid head. The check valve cartridge has a fluid pathway therethrough with a desired direction for fluid flow. The cartridge utilizes a ball-seat assembly to con... | 12/04/1990 |
| 4959176 | High resolution non corrosive amino acid analysis buffer solutions Aqueous buffer solutions for use in an ion exchange amino acid analysis system compounded so that it is non-corrosive to the stainless steel components of such a system while achieving high resolution and short analysis times in separation of the various ... | 09/25/1990 |
| 4941868 | Optimum centrifugal separation of particles by transient analysis and feedback A process and apparatus for predicting the time and position dependent concentration of macromolecules of differing species in a gradient forming solution during centrifugation is disclosed. A mathematical model of the time dependent behavior of gradient ... | 07/17/1990 |
| 4926702 | Sample presence detector for automatic sample injector A detector for detecting the presence of an electrically conductive sample solution in a sample injection metering valve by electrical sensing the leading edge of the sample solution, wherein the amount of sample solution in excess of the metered amount r... | 05/22/1990 |
| 4917179 | Thermoelectric cooling design A thermoelectric cooling design of the type having a nonconducting substrate mounting thermoelectric coolers is improved. Provisions for a flexible can and improved heat dissipation from the thermoelectric coolers are provided. For improved thermal respon... | 04/17/1990 |
