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:
Dec. 17, 1996
Filed:
Feb. 08, 1994
Masaru Saitoh, Asahikawa, JP;
Katsuo Umehara, Asahikawa, JP;
Nobuya Minemura, Asahikawa, JP;
Fumito Nakamura, Asahikawa, JP;
Yukihiro Kato, Asahikawa, JP;
Hiromu Endoh, Asahikawa, JP;
Hokkaido, Sapporo, JP;
Abstract
A process for preparing an oil sorbent excellent in oil sorptivity and water repellency and a device preparing the same are disclosed. The process for preparing an oil sorbent comprises mechanically fibrillating, or shredding and grinding lignocellulose material while substantially maintaining cell structure; and heating the resultant at a temperature of 250 to 450.degree. C. or 350 to 400.degree. C. for a predetermined period of time; followed by predetermined cooling to form an oil sorbent. The device for continuously preparing an oil sorbent having such a basic structure that three pipes with a 'ellipse-shaped' cross-section each of which includes therein a screw type transferring means are arranged on top of one another, and the heating and the cooling are effected externally.