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. 21, 1989
Filed:
Feb. 19, 1987
Edelbert Bischoff, Kirchheim-Bolanden, DE;
Wolfgang Schirmacher, Mainz, DE;
Werner & Mertz GmbH, Mainz, DE;
Abstract
The invention relates to a procedure to establish the presence of allergen-containing housedust, as results when or after housedust mites occur, in which samples of dust present in buildings are thoroughly suspended in a aqueous-alcoholic alkali metal hydroxide solution and, with the resulting extract, a color reaction using an aromatic diazo compound is carried out, the color reaction being evaluated with respect to its occurrence as an indication of the pollution of the dust with housedust mite residues. According to a particular embodiment, a paper treated with the aromatic diazo compound (and where appropriate with starch) is used for carrying out the color reaction. A further aspect of the invention involves quantitatively determining the allergological activity resulting from housedust mites in housedust samples.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile