Methods of manufacturing mirrors
US11780173B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 29, 2022 |
| Grant date | Oct 10, 2023 |
| Priority date | — |
| Expiry date | Apr 29, 2042 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2011/0058
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Methods of forming a mirror by bonding a faceplate to a core structure using adhesive formulations that include: (1) a binder comprising 40 to 60 weight % monoaluminum phosphate and 40 to 60 weight % water, the binder constituting 25 to 35 weight % of the adhesive formulation and, (2) a composition that includes a first set of particles having a coefficient of thermal expansion equal to or less than 0.05 ppm/° C. and diameters between 1 to 60 micrometers and a second set of particles having a coefficient of thermal expansion equal to or less than 0.05 ppm/° C. and diameters between 0.05 to 1 micrometers, the first set of particles constituting 80 to 85 weight % of the composition, the second set of particles constituting 15 to 20 weight % of the composition; the composition constituting 65 to 75 weigh % of the adhesive formulation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.