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. 12, 1980
Filed:
Oct. 31, 1977
William O Fitzgibbons, Hudson, OH (US);
Standard Oil Company, Cleveland, OH (US);
Abstract
Urea is destroyed in aqueous waste streams containing various anions and cations plus urea by contacting the stream with a cation exchange resin, then reacting the resulting stream with nitric oxide, nitrous acid or a nitrite salt to convert the urea to nitrogen, carbon dioxide and water and treating the resulting stream with an anion exchange resin. A pure aqueous stream is obtained which does not adversely affect the environment and which may be recycled to a plant as fresh water resulting in large monetary savings in fresh water cost.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile