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. 04, 1990
Filed:
Sep. 05, 1989
Masahiro Haruta, Tokyo, JP;
Hirohide Munakata, Yokohama, JP;
Satoshi Yuasa, Yokohama, JP;
Yoko Yoshinaga, Machida, JP;
Yukuo Nishimura, Sagamihara, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A biocatalyst such as an enzyme or microbe is immobilized in a polymer gel having a phase transition temperature such that it is capable of reversibly swelling and shrinking by a change in temperature. By lowering the temperature, the polymer gel is caused to swell and a biocatalyst is absorbed therein and by raising the temperature, the polymer gel is caused to shrink and immobilize the biocatalyst. The biocatalyst may then be released by cooling the polymer to cause it to swell. Only a portion of the polymer gel may be subjected to temperature change to immobilize the biocatalyst only in a desired portion.