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:
Mar. 28, 2006
Filed:
Oct. 24, 2002
Anurag P. Mairal, Fremont, CA (US);
Alvin NG, Palo Alto, CA (US);
Johannes G. Wijmans, Menlo Park, CA (US);
Ingo Pinnau, Palo Alto, CA (US);
Jennifer H. Ly, San Jose, CA (US);
Anurag P. Mairal, Fremont, CA (US);
Alvin Ng, Palo Alto, CA (US);
Johannes G. Wijmans, Menlo Park, CA (US);
Ingo Pinnau, Palo Alto, CA (US);
Jennifer H. Ly, San Jose, CA (US);
Membrane Technology and Research, Inc., Menlo Park, CA (US);
Abstract
A process and apparatus for treating oily wastewater, such as bilge water or ballast water, generated on a ship. The process uses a combination of a centrifugal separation step and a membrane separation step, such as an ultrafiltration step. The membrane separation step uses a dense, non-porous filtration membrane. The process is able to remove both emulsified oil and dissolved oil from the wastewater to low levels.