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.:

US 7067105 B1

PDF
Full Text
Expired
Date of Patent:
Jun. 27, 2006

Filed:

Jun. 26, 2002
Applicants:

Hisao Kogoi, Toyama, JP;

Jun Tanaka, Toyama, JP;

Hayato Yamaya, Gose, JP;

Inventors:

Hisao Kogoi, Toyama, JP;

Jun Tanaka, Toyama, JP;

Hayato Yamaya, Gose, JP;

Assignee:

Showa Denko K.K., Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01F 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A process for producing alumina particles, comprising vaporizing aluminum chloride to form an aluminum chloride vaporized gas, which optionally contains an inert gas, and oxidizing the vaporized aluminum chloride with an oxidizing gas to produce alumina particles, wherein the aluminum chloride vaporized gas and the oxidizing gas are introduced into a reactor each at an ejecting flow velocity of about 10 m/sec or more, the ratio of the flow velocity of oxidizing gas to the flow velocity of the aluminum chloride vaporized gas is approximately from 0.2 to less than 10, and the amount of oxidizing gas is about 1 or more times the amount of oxidizing gas necessary for stoichiometrically oxidizing aluminum chloride.


Find Patent Forward Citations

Kogoi, Hisao. (2006). Alumina particles, production process thereof, composition comprising the particles and alumina slurry for polishing (U.S. Patent No. 7067105). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7067105

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