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:
Jun. 24, 2003
Filed:
Feb. 01, 2001
Karl Seff, Honolulu, HI (US);
Hyun Sook P. Cordes, Lincoln University, PA (US);
Martin Bülow, Basking Ridge, NJ (US);
Frank R. Fitch, Bedminster, NJ (US);
Adeola F. Ojo, Scotch Plains, NJ (US);
Sudhakar R. Jale, Scotch Plains, NJ (US);
Dongmin Shen, Berkeley Heights, NJ (US);
The BOC Group, Inc., Murray Hill, NJ (US);
Abstract
Zeolites exchanged with lithium, rubidium, cesium cations and trivalent cations are prepared by first partially, fully or excessively ion-exchanging a sodium-containing zeolite, a potassium-containing zeolite or a sodium- and potassium-containing zeolite with trivalent cations, then calcining the partially, fully or excessively trivalent cation-exchanged zeolite, and then ion exchanging the calcined zeolite with lithium rubidium, cesium cations, thereby replacing hydrogen and any sodium and/or potassium cations remaining in the zeolite with lithium, rubidium, cesium cations, whereby trivalent cations present in the zeolite will not be substantially replaced by the lithium ions.