1
Martin P T Bradley, Leslie A Miller, Thomas J McCall, Duane L Middlebusher: Autosampler mechanism. Spectra Physics, Donald C Feix, October 23, 1984: US04478095 (145 worldwide citation)

A sampler for taking samples from multiple sources has a fixed, non-moving needle at a sampling station. A sample vial is lifted from a tray at the sampling station. The needle pierces the septum of the vial and enters the sample as the vial is lifted toward the needle. The sample vial is also rotat ...


2
Williams G Patterson, Allen B Rochkind, Leslie A Miller, Martin P T Bradley: Dual piston pump. Spectra Physics, Donald C Feix, October 5, 1982: US04352636 (52 worldwide citation)

A pump for producing a substantially smooth and continuous outflow of liquid at relatively high pressure has two piston assemblies flow connected in series. The first piston assembly includes a pressure piston having a long suction stroke and a relatively short and abrupt expulsion stroke. A valve a ...


3
Ronald E Honganen, Robert L Howe, Leslie A Miller: Process for controlling a pump to account for compressibility of liquids in obtaining steady flow. Ron Fish, January 10, 1989: US04797834 (50 worldwide citation)

An apparatus and method controls a dual piston pump for a liquid chromatography system so as to pump a flow of solvent through the liquid chromatography column at a constant flow rate and with a solvent composition which is substantially equal to the desired solvent composition despite changing cond ...


4
Martin P T Bradley, Leslie A Miller, Thomas J McCall, Duane L Middlebusher, John H Henselman: Autosampler mechanism. Spectra Physics, Donald C Feix, November 11, 1986: US04622457 (48 worldwide citation)

A sampler for taking samples from multiple sources has a fixed, non-moving needle at a sampling station. A sample vial is lifted from a tray at the sampling station. The needle pierces the septum of the vial and enters the sample as the vial is lifted toward the needle.


5
Leslie A Miller, Thomas J McCall Jr, Samuel A Marquiss, Douglas H Smith, Richard F Johnson: Transport apparatus. Thermo Separation Products, Killworth Gottman Hagan & Schaeff, January 16, 1996: US05483843 (41 worldwide citation)

A vial transport apparatus which is capable of storing and retrieving samples and then transporting them from one location in a sampling system to another without the complexity and expense of robotic arms or gripper elements is provided. A passive hook arrangement is utilized to engage the vials fo ...


6
Ronald A Gatten, Leslie A Miller, Thomas J McCall Jr, Vance J Nau: Apparatus for degassing a liquid. Spectra Physics, Killworth Gottman Hagan & Schaeff, February 2, 1993: US05183486 (38 worldwide citation)

Methods and apparatus for effective vacuum degassing of a liquid are provided for liquid chromatography. The bottles with the liquid are mounted above the vacuum degassing unit to provide a head pressure to the LC pump and physical stability to the bottles. The liquid is heated in the vacuum chamber ...


7
Leslie A Miller, Thomas J McCall: Multiple piston pump control. Spectra Physics, Donald C Feix, November 12, 1985: US04552513 (23 worldwide citation)

A multiple piston assembly pump of the kind which provides an overlap between the flow output of the piston assemblies during a portion of the strokes of the piston assemblies incorporates a method and apparatus for reducing pulsations in the flow during the time when the pump is changing over from ...


8
Ronald A Gatten, Leslie A Miller, Thomas J McCall Jr, Vance J Nau: Methods and apparatus for degassing a liquid. Thermo Separation Products, Killworth Gottman Hagan & Schaeff, March 1, 1994: US05290340 (21 worldwide citation)

A degassing system is provided and includes a module for conditioning a liquid to be analyzed. The module includes a container holding a liquid, a degassing chamber, and a holder for the liquid container mounted on top of the degassing chamber. The holder provides stability to the module and contain ...


9
Ronald E Honganen, Robert L Howe, Leslie A Miller: Apparatus for controlling a pump to account for compressibility of liquids in obtaining steady flow. Spectra Physics, Ciotti & Murashige Irell & Manella, January 10, 1989: US04797207 (20 worldwide citation)

There is disclosed herein an apparatus and method for controlling a dual piston pump for a liquid chromatography system so as to pump a flow of solvent through the liquid chromatography column at a constant flow rate and with a solvent composition which is substantially equal to the desired solvent ...


10
Ronald A Gatten, Leslie A Miller, Thomas J McCall Jr, Vance J Nau: Methods and apparatus for degassing a liquid. Thermo Separation Products, Killworth Gottman Hagan & Schaeff, January 18, 1994: US05279647 (10 worldwide citation)

An apparatus for effective vacuum degassing of a liquid is provided for liquid chromatography applications. The liquid to be degassed is heated in the vacuum chamber by a radiator of electromagnetic energy, in one embodiment, or is heated before it enters the vacuum chamber. The liquid may also be a ...



Click the thumbnails below to visualize the patent trend.