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. 21, 1992
Filed:
Aug. 24, 1990
Applicant:
Inventors:
Riad A Al-Samadi, Burlington, CA;
Cheung K Li Kwok Cheong, Cornwall, CA;
Assignee:
Chemetics International Company, Ltd., Ontario, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01B / ; C01B / ; C01B / ;
U.S. Cl.
CPC ...
423531 ; 423403 ; 423404 ; 423533 ; 423535 ; 423540 ; 4235 / ;
Abstract
A process for the recovery of sulphuric acid from a waste acid stream containing ammonium sulphate comprising vaporizing the waste acid and subsequently converting the ammonia and sulphur dioxide generated to nitrogen and sulphur trioxide, respectively. The process provides an economic method for the regeneration of the waste sulphuric acid from a methyl methacrylate production process.
Quick Actions:
Al-Samadi, Riad. (1992). Waste acid recovery process (U.S. Patent No. 5082645). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5082645
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile