Patent · US Active

Method for grading a particulate water-absorbing resin

US8104621B2 · kind B2 · utility

4Cited by

8References

19Claims

0Family size

Assignee

BASF SE

Inventors

Matthias Weismantel · Bad Orb, DE
Rüdiger Funk · Niedernhausen, DE
Thomas Daniel · Waldsee, DE
Uwe Stueven · Bad Soden, DE

Key dates

Filing date	Dec 31, 2005
Grant date	Jan 31, 2012
Priority date	—
Expiry date	May 12, 2028

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB07B1/46
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

Process for classifying a particulate water-absorbing resin using a sieving apparatus at a reduced pressure compared with the ambient pressure and a sieving apparatus for classifying a particulate water-absorbing resin at a reduced pressure compared with the ambient pressure.

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