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, 2001
Filed:
May. 28, 1998
Applicant:
Inventors:
Hossein Sharifian, Austin, TX (US);
John W. Drew, Chatham, NJ (US);
Assignee:
Sachem, Inc., Austin, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 3/06 ; C01B 2/114 ;
U.S. Cl.
CPC ...
B01D 3/06 ; C01B 2/114 ;
Abstract
In one embodiment, the present invention relates to a method of treating a solution containing hydroxylamine, involving subjecting the solution containing hydroxylamine to fractional distillation using a packed column thereby providing a first distillate; and subjecting the first distillate to flashover distillation thereby providing a second distillate containing a hydroxylamine solution. In another embodiment, the present invention relates to an ultrapure solution simply containing hydroxylamine, at least one stabilizer, and water.