Patent · US Active

Diatomaceous earth composition with a low endotoxin content

US11911741B2 · kind B2 · utility

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1References

7Claims

0Family size

Assignee

Sartorius Stedim Biotech GmbH · DE

Inventors

Karl Pflanz · Oettingen, DE
Florian Hebenstreit · Beberstedt, DE
Andreas Pickl · Klein Schneen, DE

Key dates

Filing date	Oct 9, 2018
Grant date	Feb 27, 2024
Priority date	—
Expiry date	Jun 21, 2041

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61L2202/21
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

The present invention relates to a diatomaceous earth composition with a low endotoxin content, comprising an agglomerated mixture of calcined diatomaceous earth particles and water, wherein the mass ratio of calcined diatomaceous earth particles and water is in the range of 1:1.0 to 1:2.0, and wherein the endotoxin content of the diatomaceous earth composition is equal to or less than 0.5 EU/mL. In a further aspect, the present invention relates to a method for producing the diatomaceous earth composition with a low endotoxin content. In another aspect, the present invention relates to the use of the diatomaceous earth composition with a low endotoxin content as a precoat agent for the precoat filtration in biopharmaceutical applications.

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