Tanning of leather
US4622156A · kind A · utility
1Cited by
11References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 4, 1985 |
| Grant date | Nov 11, 1986 |
| Priority date | — |
| Expiry date | Apr 4, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC14C3/06
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Leather is made by tanning hides and skins in a solution containing chromium to which is added reactive alumina hydrate. A high take-up of chromium and leather having improved properties are obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.