Patent · US Expired

Particulate membrane ultrafiltration device

US4060488A · kind A · utility

31Cited by

5References

8Claims

0Family size

Assignee

E.I. DU PONT DE NEMOURS AND COMPANY · US

Inventors

Fred Wayne Hoover · Wilmington, US
Ralph K. Iler · Fort Lauderdale, US

Key dates

Filing date	Nov 20, 1975
Grant date	Nov 29, 1977
Priority date	—
Expiry date	Nov 20, 1995

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01D2323/081
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

An ultrafiltration device which includes a porous support, one surface of which is coated with a membrane comprising at least two sizes of particles, one size being capable of passing through the pores and another size capable of passing into but not through the pores.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.