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:
Feb. 23, 1999
Filed:
Apr. 24, 1997
Junichi Yoshimura, Miyagi, JP;
Mitsuyuki Takahashi, Miyagi, JP;
Osamu Hatakeyama, Miyagi, JP;
Satoshi Sugawara, Miyagi, JP;
Fumio Kutsukake, Tokyo, JP;
Masatoshi Yokoyama, Miyagi, JP;
Takuya Kinoshita, Tokyo, JP;
Sadaji Kawazoe, Kanagawa, JP;
Hiroshi Obara, Kanagawa, JP;
Yasuo Saito, Kanagawa, JP;
Yoriyuki Tsunakawa, Tokyo, JP;
Japan Tobacco Inc., Minato-Ku, JP;
Tohoku Electric Power Co., Inc., Miyagi, JP;
Kett Electric Laboratory, Tokyo, JP;
Abstract
In a method and apparatus for discriminating a coal species, discriminating values of coal species/properties are prepared corresponding to coal ranks, a coal to be discriminated is irradiated with near-infrared rays having different wavelengths, and light of near-infrared rays reflected from the coal is received; Aborbances of the coal are acquired, and the coal species/property discriminating value of the coal is discriminated on the basis of the absorbances and a prescribed calibration curve.