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:
Aug. 17, 1993
Filed:
Feb. 12, 1992
Applicant:
Inventors:
Kirk T O'Reilly, El Sobrante, CA (US);
John P Suzuki, Pinole, CA (US);
Assignee:
Other;
Primary Examiner:
Int. Cl.
CPC ...
B01D / ; C02F / ;
U.S. Cl.
CPC ...
210656 ; 210662 ; 210674 ; 210692 ; 436161 ; 436178 ;
Abstract
Specific toxicants are selectively removed from aqueous waste streams associated with the production of petroleum and petroleum products by contacting such aqueous waste streams with a non-ionic macroreticular polymeric resin having a low to intermediate surface polarity. The toxicants are a group of structurally-related organic molecules containing at least one carboxylic acid group and having a molecular weight in the range of about 200 to about 400. These molecules are toxic to certain indicator species of fish at concentrations of less than 10 parts per billion.