Porous hollow fiber
US4992332A · kind A · utility
14Cited by
3References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 27, 1989 |
| Grant date | Feb 12, 1991 |
| Priority date | — |
| Expiry date | Apr 27, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2978
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The improvement in a porous hollow fiber having a large number of micropores in its surrounding wall, in which walls of said pores are coated with an essentially water-insoluble alkylcellulose derivative such as ethylcellulose, carboxymethylethylcellulose, hydroxypropylmethylcellulose acetate succinate or hydroxypropylmethylcellulose phthalate, or poly(2-hydroxyethyl methacrylate).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.