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:
May. 21, 2002
Filed:
Nov. 12, 1999
Tatsuaki Sato, Tokyo, JP;
Shinya Miyamoto, Hitachinaka, JP;
Masumitsu Toyohara, Yokohama, JP;
Masaru Okamoto, Kawasaki, JP;
Yoshinari Takamatsu, Kawasaki, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
Raw material of algae cultivating medium molded body is manufactured by mixing a mixture containing inorganic material, curing material and algae cultivating nutriment, molding the mixture to molded bodies and curing the molded bodies. The molded bodies are manufactured such that the molded bodies are water floatable having a closed cavity inside the body, or containing density decreasing material for example. The manufacturing method enables to produce algae cultivating medium that can float on water in a large quantity. Industrial waste such as coal ashes and incineration ashes, sands and crushed shells can be used as the inorganic raw material of the medium. As the curing material which solidify the molded body, other than cement, algae cultivating nutriment such as phosphorus compounds can be used. Extrusion molding can favorably be applied for molding molded body. A cylindrically molded body can be sealed the both edges thereof to form a cavity portion inside thereof. A disintegration molding after preparatory molding, or agitation molding can also be used as molding step of this manufacturing method. Further, waste heat of a thermal power plant or an incinerator that produce inorganic material as wastes can be used for curing the molded body.