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. 30, 1999
Filed:
Jun. 23, 1997
Thomas Hsiao-Ling Hsiung, Emmaus, PA (US);
John Bruce Wallace, Jr, Red Hill, PA (US);
Air Products and Chemicals, Inc., Allentown, PA (US);
Abstract
A process for removing parts-per-million quantities of unwanted species such as oxygen, carbon monoxide, hydrogen, carbon dioxide and water from a cryogenically produced nitrogen gas stream using an oxygen removal step prior to a nickel-based catalytic adsorption step in order to eliminate the need for hydrogen regeneration in either step. Ultrapure nitrogen heated to less than 500.degree. C. is used to purge and hold the beds used for unwanted species removal, eliminating the need for hydrogen regeneration thus reducing the regeneration cycle time and cost.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile