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:
Jan. 17, 1995
Filed:
Jul. 02, 1993
Shinji Inagaki, Aichi, JP;
Yoshiaki Fukushima, Aichi, JP;
Akane Okada, Aichi, JP;
Kazuhiro Fukumoto, Aichi, JP;
Kazuyuki Kuroda, Tokyo, JP;
Kabushiki Kaisha Toyota Chuo Kenkyusho, Tokyo, JP;
Abstract
A heat resistant layered porous silica having a honeycomb porous structure comprises a plurality of waved or bent sheet layers of crystalline layered silicate superposed one after another, and the neighboring sheets are partially bonded by siloxane bonding. The spacing between the neighboring sheet layers is narrowed toward the bonded portions and expanded at other portions to thereby form fine pores. The layered porous silica contains alkali metal ions in an amount of 0.2% by weight or less and has a specific surface area of 1,000 m.sup.2 /g or more. The layered porous silica has a large specific surface area, and exhibits an excellent heat resistance and adsorption of organic substances such as fuel.