Container packed with powder of hydrogen absorbing alloy
US5932513A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 2, 1998 |
| Grant date | Aug 3, 1999 |
| Priority date | — |
| Expiry date | Oct 2, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/13
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A container packed with a mixture of powders classified respectively into two or at least three particle-size distribution groups which are different in average particle size, the powders comprising a hydrogen absorbing alloy singly or the combination of such an alloy and a substance not absorbing hydrogen. The mixture is at least 0.03 to not greater than 0.50 in the ratio d.sub.2 /d.sub.1 wherein d.sub.1 is the average particle size of the powder having the particle-size distribution of the largest average particle size, and d.sub.2 is the average particle size of the powder having the particle-size distribution of the second largest average particle size. The weight ratio of the powder to the total weight of the powders is greater when that powder has a particle-size distribution of larger average particle size. The weight ratio of the powder having the particle-size distribution of the second largest average particle size to the powder having the particle-size distribution of the largest average particle size is at least 0.2 to not greater than 0.8.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.