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:
Jan. 29, 1991
Filed:
May. 30, 1990
Applicant:
Inventors:
John G Reynolds, El Cerrito, CA (US);
David C Kramer, San Anselmo, CA (US);
Assignee:
Chevron Research Company, San Francisco, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C10G / ;
U.S. Cl.
CPC ...
2082 / ; 208252 ; 208282 ; 208309 ; 423D / ; 585866 ;
Abstract
Monobasic carboxylic acids or salts thereof are used to remove metals, particularly calcium and iron, from hydrocarbonaceous feedstocks. An aqueous solution of the acid is used to extract the metals from the feedstock prior to processing. Acetic acid is the preferred carboxylic acid.
Quick Actions:
Reynolds, John. (1991). Demetalation of hydrocarbonaceous feedstocks using monobasic carboxylic (U.S. Patent No. 4988433). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4988433
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