Lee H Altmayer

US Patent:

7488935, Feb 10, 2009

Filed:

Jun 24, 2005

Appl. No.:

11/165871

Inventors:

Lee H. Altmayer - Wilmington DE, US

Assignee:

Agilent Technologies, Inc. - Santa Clara CA

International Classification:

B01D 59/44

US Classification:

250281, 250282

Abstract:

A mass spectrometry system is described. The mass spectrometry system includes an ion source to ionize a sample stream, a detector positioned downstream with respect to the ion source to acquire mass spectrometry data of the sample stream, and a data analyzer connected to the detector. The data analyzer includes a chromatogram generator to process the mass spectrometry data to derive a chromatogram, a data point selector to apply a selection criterion to the chromatogram to select data points from the chromatogram, and a peak discriminator to apply a discriminating criterion to the data points to detect a peak in the chromatogram, wherein the peak is indicative of a presence of an analyte in the sample stream. A computer-readable medium for a mass spectrometry system and a method of processing mass spectrometry data are also described.

US Patent:

51556936, Oct 13, 1992

Filed:

Sep 5, 1990

Appl. No.:

7/577966

Inventors:

Lee H. Altmayer - Hockessin DE
Christopher M. Wurm - Landenberg PA

Assignee:

Hewlett-Packard Company - Palo Alto CA

International Classification:

G06F 1521
G06F 1134

US Classification:

364550

Abstract:

A method of creating a self-documenting logfile which records the status and operation of a substantially computer-controlled device. The method comprises the steps of accepting input commands from a user for controlling the device status and operation; monitoring the device characteristics; detecting deviations in the device status, user inputs, and procedural steps in the device's operation; writing these detected events to the logfile with the date and time of which the detected event occurred; and retrieving the logfile upon user demands for review of the logfile. In order to comply with good laboratory practices (GLP), the method additionally comprises steps for verifying the user input commands by determining the acceptability of the input commands, detecting inadvertent alteration to the logfile and testing the validity of the logfile for invalid data. Steps for providing an enciphering key within the event lines which comprise the logfile in order to detect tampering are also disclosed.

US Patent:

62104659, Apr 3, 2001

Filed:

Mar 17, 1999

Appl. No.:

9/270854

Inventors:

Lee H. Altmayer - Wilmington DE

Assignee:

Agilent Technologies, Inc. - Santa Clara CA

International Classification:

B01D 1508

US Classification:

95 82

Abstract:

A method for identifying components within a known type of sample through pattern recognition between an array of recognition coefficients generated from the attributes and stable relationships of a plurality of peaks within a chromatogram of a sample to be analyzed and a similar array of recognition coefficients generated from the attributes and stable relationships of a plurality of peaks from a set of one or more historical chromatograms of the known type of sample. The group of attributes include, but are not limited to: retention time, peak shape including symmetry, width and duration, peak size including area and height, and algorithmic measures of peak type.

US Patent:

52552055, Oct 19, 1993

Filed:

Mar 2, 1990

Appl. No.:

7/487658

Inventors:

Christopher M. Wurm - Landenberg PA
Lenore R. Frank - Landenberg PA
Lee H. Altmayer - Hockessin DE

Assignee:

Hewlett-Packard Company - Palo Alto CA

International Classification:

G06F 1520

US Classification:

364510

Abstract:

Method and apparatus for regulating the passage of fluid through a chamber or other type of conduit. Fluid passage is terminated when the volume of fluid which has swept through a chamber equals a selected multiple of the chamber's internal volume, which multiple is known as swept chamber volumes.