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. 09, 2019
Filed:
Dec. 21, 2016
Topcon Corporation, Tokyo, JP;
Kaoru Kumagai, Tokyo, JP;
Shugo Akiyama, Tokyo, JP;
Issei Hanya, Tokyo, JP;
Peng Zhao, Tokyo, JP;
Masashi Funahashi, Tokyo, JP;
Yoshimitsu Nakajima, Tokyo, JP;
Yuji Shirane, Tokyo, JP;
TOPCON CORPORATION, Tokyo, JP;
Abstract
A method of measuring a state of concrete includes emitting an irradiation light to the concrete, the irradiation light including a wavelength range of near infrared light related to concrete measurement; and receiving a reflection light of the irradiation light P reflected on the concrete. At least five wavelengths λto λto λ, different from each other by PLS regression analysis within a wavelength range of 900 nm to 2500 nm of absorption spectrum, are determined, and a degree of neutralization of the concrete caused by calcium hydroxide and a concentration of chloride ion is estimated.