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:
Nov. 02, 2021
Filed:
Dec. 05, 2018
Lg Hausys, Ltd., Seoul, KR;
Hyun-Woo You, Seoul, KR;
Youn-Ki Jun, Seoul, KR;
Dae-Hoon Kwon, Seoul, KR;
Sung-Jin Park, Seoul, KR;
Eul-Doo Park, Seoul, KR;
LG HAUSYS, LTD., Seoul, KR;
Abstract
Provided is a functional building material for windows and doors, the material comprising a transparent substrate and a low-emissivity coating formed on one side of the transparent substrate, wherein: the low-emissivity coating comprises a first dielectric layer, a second dielectric layer, a lower barrier layer, a third dielectric layer, a first low-emissivity protection layer, a low-emissivity layer, a second low-emissivity protection layer, a fourth dielectric layer, a fifth dielectric layer, an upper barrier layer, and a sixth dielectric layer which are laminated in that order on the transparent substrate; the refractive index of the first dielectric layer and the refractive index of the third dielectric layer are each smaller than the refractive index of the second dielectric layer; and the refractive index of the fourth dielectric layer and the refractive index of the sixth dielectric layer are each smaller than the refractive index of the fifth dielectric layer.