The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 14, 1997
Filed:
Mar. 04, 1993
Scot R Weinberger, Reno, NV (US);
Robert W Egan, Reno, NV (US);
Thomas W Hoppe, deceased, late of Reno, NV (US);
Ernst Gassmann, Hofstetten, CH;
Martin M Schar, Spiegel, CH;
Klaus O Bornsen, Staufen, DE;
E Rocco Tarantino, Reno, NV (US);
Hewlett Packard Company, Palo Alto, CA (US);
Abstract
A laser desorption ionization instrument for measuring the molecular weight of large organic molecules includes a time of flight (TOF) mass spectrometer. The time of flight mass spectrometer includes a sample lock for holding, under vacuum, a plurality of samples to be analyzed. A sample may be inserted into and removed from the sample lock and into the mass spectrometer without breaking vacuum in the spectrometer. Signal processing electronics of the LDIM instrument include means for identifying quasi-molecular species of a molecule being measured. The instrument includes improvements in ion optics, microchannel plate detectors, laser irradiation of samples, and preparation of samples for measurement.