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:
Jul. 09, 2002
Filed:
Aug. 25, 2000
Showa Denko K. K., Tokyo, JP;
Abstract
Ultrafine particulates of highly white zinc oxide having a reduced average particle diameter of about 15 nm to about 55 nm as measured by the BET-one point method and that has an L value of about 90 or more as measured by a Hunter-type color-difference meter. Also, a process for producing ultrafine particulates of highly white zinc oxide, comprising oxidizing zinc vapor with an oxidizing gas in a reactor, wherein a zinc vapor-containing gas has a temperature of about 950° C. or more at a nozzle of the reactor for discharging the zinc vapor-containing gas and the oxidizing gas has a temperature of about 900° C. or more at a nozzle of the reactor for discharging the oxidizing gas is disclosed.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile