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:
Oct. 26, 1999
Filed:
Jan. 19, 1999
Applicant:
Inventors:
Karl C Kharas, Tulsa, OK (US);
Roy T Mitsche, Peoria, AZ (US);
Heinz J Robota, Tulsa, OK (US);
Michael G Gatter, Elk Grove Village, IL (US);
Assignee:
ASEC Manufacturing, a General Partnership, Catoosa, OK (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C04B / ;
U.S. Cl.
CPC ...
501127 ; 501128 ; 501153 ; 423601 ; 423617 ; 423618 ; 423625 ; 4233291 ; 423275 ; 423305 ; 423628 ; 502208 ; 502263 ; 502349 ; 502355 ; 502102 ;
Abstract
Methods of making substantially phase-pure and thermally stable crystalline alumina compositions stabilized with an oxide of silicon, germanium, phosphorus, arsenic or a mixture thereof. Also provided are crystalline alumina compositions and catalyst supports made using these methods.