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:
Jun. 08, 2004
Filed:
Dec. 04, 2002
Applicant:
Inventors:
Arun K. Mehta, Los Altos, CA (US);
Robert H. Hurt, Barrington, RI (US);
Yuming Gao, Providence, RI (US);
Xu Chen, Providence, RI (US);
Eric M. Suuberg, Barrington, RI (US);
Assignee:
Brown University Research Foundation, Providence, RI (US);
Primary Examiner:
Int. Cl.
CPC ...
C01C 1/02 ; C04B 1/806 ;
U.S. Cl.
CPC ...
C01C 1/02 ; C04B 1/806 ;
Abstract
A method for removing ammonia from fly ash employs water mist (a water fog) or a flowing warm humid air stream to rid the fly ash of ammonia. Ozone alone or with other co-oxidants such as hydrogen peroxide are also used to rid fly ash of ammonia.