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:
Nov. 09, 1999
Filed:
Jan. 06, 1998
Charles Sumner, Livingston, NJ (US);
Vitus Tuan Wei, Houston, TX (US);
John J Crawford, Coraopolis, PA (US);
Stephen J Stanley, Matawan, NJ (US);
Richard John McNab, Randolph, NJ (US);
ABB Lummus Global Inc., Bloomfield, NJ (US);
Abstract
A refrigeration system for an ethylene plant uses a low pressure demethanizer and a binary refrigerant comprising a mixture of methane and ethylene or methane and ethane. The refrigeration composition may be constant throughout the system or separators may be used to divide the refrigerant into a methane-rich binary refrigerant and an ethylene- or ethane-rich binary refrigerant.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile