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:
Feb. 16, 1999
Filed:
May. 30, 1997
Applicant:
Inventor:
J Michael Flanagan, Sunnyvale, CA (US);
Assignee:
Hewlett-Packard Company, Palo Alto, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ; H01J / ;
U.S. Cl.
CPC ...
2502521 ; 250282 ;
Abstract
Calibrant compositions are provided for use in either electrospray or APCI mass spectrometry, and can be used in either positive-ionization or negative-ionization modes. The compositions contain a primary calibrant preferably comprised of a mixture of homogeneously substituted triazatriphosphorines, and a secondary calibrant enabling calibration at relatively low mass-to-charge (m/z) values. The compositions enable calibration across a broad mass spectral range. Novel triazatriphosphorine compounds are provided as well, as are methods for calibrating mass spectrometers using the novel calibrant compositions.