Dry-cleaning of garments using liquid carbon dioxide under agitation as cleaning medium
US5467492A · kind A · utility
105Cited by
11References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 29, 1994 |
| Grant date | Nov 21, 1995 |
| Priority date | — |
| Expiry date | Apr 29, 2014 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06B19/00
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Liquid carbon dioxide, in combination with agitation and, optionally, with process enhancers, such as surfactants, and solvents, such as water, is used to remove contaminants from garments or fabrics. Both apparatus and process are disclosed. Carbon dioxide-cleaned garments are rendered free of odor, require no drying, and the cost per unit solvent (by weight) is a fraction of that of conventional solvents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.