Patent · US Expired

Method and apparatus for the metered conveying of pulverulent solids

US4211506A · kind A · utility

9Cited by

6References

1Claims

0Family size

Assignee

Chemische Werke Huels Aktiengesellschaft · US

Inventors

Ferdinand List · Marl, DE
Julius Klos · Recklinghausen, DE
Helmut Alfs · Marl, DE

Key dates

Filing date	Apr 4, 1978
Grant date	Jul 8, 1980
Priority date	—
Expiry date	Apr 4, 1998

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C63/26
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

Method and apparatus for the metered conveying of pulverulent solids with the aid of an eccentric screw pump. The pulverulent solids such as terephthalic acid (TPA) are mechanically or pneumatically loosened in the receiving chamber of the pump.

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