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:
Jul. 02, 2013
Filed:
Jul. 14, 2008
Masahiro Nakamura, Chuo-ku, JP;
Saburo Goto, Chuo-ku, JP;
Takeyoshi Nozawa, Chuo-ku, JP;
Kozo Ishida, Chuo-ku, JP;
Masahiro Nakamura, Chuo-ku, JP;
Saburo Goto, Chuo-ku, JP;
Takeyoshi Nozawa, Chuo-ku, JP;
Kozo Ishida, Chuo-ku, JP;
Japan Drilling Co., Ltd., Tokyo, JP;
Japan Oil, Gas and Metals National Corporation, Kawasaki-Shi, JP;
Abstract
Warm water is pumped up by a pump from an underground aquifer present 1000 to 1500 m below the seabed, geothermal energy is caused to flow through a permeable layer below a methane hydrate layer, a dissociation boundary surface of an un-dissociated area of the methane hydrate layer is dissociated to generate methane gas, the methane gas is led into a production well from peripheral areas and through a gas inlet screen and caused to rise so that the methane gas is collected on the sea.