Neutral, high visible, durable low-E glass coating system, insulating glass units made therefrom, and methods of making same
US6059909A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 25, 1998 |
| Grant date | May 9, 2000 |
| Priority date | — |
| Expiry date | Feb 25, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12896
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A sputter-coated layer system on a glass substrate particularly useful in insulating glass (IG) units, enables normal emissivity values (E.sub.n) of 0.06 or less, good durability and neutral color. The layer system includes an undercoat of a transparent dielectric having an index of refraction between 2.5-2.6 at a wavelength of 550 nanometers, two layers of Si.sub.3 N.sub.4, and two layers of nichrome sandwiching a layer of silver to achieve its unique low-E, neutral color, non-mirrorlike solar management properties. An optional overcoat of a transparent dielectric material having an index of refraction of 2 at a wavelength of 550 nanometers may be provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.