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:
Nov. 10, 2020
Filed:
Jun. 19, 2017
Ventana Medical Systems, Inc., Tucson, AZ (US);
Heidi Barnett, Tucson, AZ (US);
Edward E. Durrant, Oro Valley, AZ (US);
Eric L. Klein, Tucson, AZ (US);
Michael Lynch, Tucson, AZ (US);
Kevin H. Pritchard, Tucson, AZ (US);
Ventana Medical Systems, Inc., Oro Valley, AZ (US);
Abstract
This disclosure relates to hematoxylin staining formulations and particularly to formulations for use in autostainers. The disclosed compositions were discovered to possess atypical stability under storage while having high stain quality and sufficiently fast staining performance. The disclosed hematoxylin staining compositions include a solvent system, hematoxylin, a chemical oxidant, and a mordant. Illustrative embodiments also have a Cl/SOmolar ratio of between about 2.5/1 and about 1/4.