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. 23, 2019
Filed:
Nov. 20, 2017
Agc Inc., Chiyoda-ku, JP;
Makoto Shiratori, Haibara-gun, JP;
AGC Inc., Chiyoda-ku, JP;
Abstract
It is an object of the present invention to provide near infrared cutoff filter glass having a high transmittance in a visible light range and a low transmittance in a near infrared light range and being excellent in the devitrification resistance, even though the concentration of Cu components in the glass is high for forming a thin plate. A near infrared cutoff filter glass, which comprises, as represented by cation percentage: P30 to 50%, Al5 to 20%, R20 to 40% (wherein Ris the total amount of Li+Na+K), R'5 to 30% (wherein R′is the total amount of Mg+Ca+Sr+Ba+Zn), Cu3 to 15% and comprises, as represented by anion percentage: O30 to 90% and F10 to 70%, wherein (Li+Na+K)/(P+Al) is from 0.45 to 1.0, and (Sr+Ba+Cu)/(Al+Mg+Ca) is from 0.5 to 1.0.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile