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:
May. 22, 2012
Filed:
Oct. 30, 2008
Kengo Kayano, Toyota, JP;
Naoki Sato, Toyota, JP;
Shinichiro Hirayama, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Aichi, JP;
Abstract
With respect to a lead detection method that uses rhodizonic acid, it is made possible to clearly identify pink or red coloration caused by a reaction between lead and rhodizonic acid even in cases where Sn is present in a specimen. To this end, an acidic aqueous solution or a buffer solution thereof (e.g., tartaric acid) in which hydrogen peroxide coexists is used as a reagent. Hydrogen peroxide oxidizes Sninto Sn. Since Sndoes not react with rhodizonic acid, the presence of Sn does not interfere with the visual identification of any pink or red coloration caused by the reaction between lead and rhodizonic acid.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile