Vacuum heat-insulator
US5866228A · kind A · utility
55Cited by
5References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 12, 1997 |
| Grant date | Feb 2, 1999 |
| Priority date | — |
| Expiry date | Jun 12, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/239
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A vacuum heat-insulator (6) formed by tightly packaging a shaped product comprising acicular crystals of calcium silicate entangled in a three dimensional manner in a reduced pressure state in a container (2), (3), (4) composed of a composite film formed by laminating a metal foil, or vapor-depositing a metal or metal oxide to a plastic film, and having a thermal conductivity at 20.degree. C. of not more than 0.015 Kcal/m.hr..degree.C. This vacuum heat-insulator (6) brings about no environmental problems upon discarding caused by dusting, and is capable of displaying an excellent heat-insulating performance without using Freon.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.