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:
Oct. 15, 1991
Filed:
Jan. 03, 1990
Applicant:
Inventors:
Mikio Kaihara, Tokyo, JP;
Hiroaki Mametsuka, Tokyo, JP;
Naoki Gunji, Kanagawa, JP;
Hideo Iwata, Kanagawa, JP;
Yohichi Gohshi, Kanagawa, JP;
Assignee:
NKK Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
250339 ; 250353 ;
Abstract
A dilution material for measuring infrared spectra comprising two or more kinds of the inorganic materials capable of transmitting infrared rays, of which the surface reflection loss is less than one third, and at least one of which the refractive index is different from another one by more than 0.1, and other means capable of improving infrared spectra of highly scattering samples such as coal powder and pitch powder.