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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 11826720 B1

PDFFull Text
Date of Patent:
Nov. 28, 2023

Filed:

Nov. 06, 2020

Diatomaceous earth composition containing salt water

Applicant:

Sartorius Stedim Biotech Gmbh, Göttingen, DE;

Inventors:

Karl Pflanz, Göttingen, DE;

Andreas Pickl, Rosdorf, DE;

Florian Hebenstreit, Beberstedt, DE;

Assignee:

Sartorius Stedim Biotech GmbH, Gottingen, DE;

Attorney:

McDonnell Boehnen Hulbert & Berghoff, LLC

Primary Examiner:

Bin Shen

Int. Cl.
CPC ...
B01J 20/02 (2006.01); B01J 20/14 (2006.01); B01D 37/02 (2006.01); B01J 20/04 (2006.01); B01J 20/28 (2006.01); B01J 20/30 (2006.01); C12M 1/00 (2006.01); C12N 1/02 (2006.01); C12N 5/00 (2006.01);
U.S. Cl.
CPC ...
B01J 20/14 (2013.01); B01D 37/02 (2013.01); B01J 20/046 (2013.01); B01J 20/28004 (2013.01); B01J 20/28016 (2013.01); B01J 20/3078 (2013.01); B01J 20/3092 (2013.01); C12M 47/10 (2013.01); C12N 1/02 (2013.01); C12N 5/0081 (2013.01);
Abstract

The present invention relates to an improved diatomaceous earth composition containing salt water. The diatomaceous earth composition according to the present invention comprises an agglomerated mixture of calcined diatomaceous earth particles, water and at least one inorganic salt, wherein the mass ratio of the calcined diatomaceous earth particles and water is in the range of 1:1.0 to 1:2.0, and wherein the content of the at least one inorganic salt is equal to or more than 0.25 parts by mass based on 100 parts by mass of water. In a further aspect, the present invention relates to a method for producing the diatomaceous earth composition according to the present invention. In another aspect, the present invention relates to the use of the diatomaceous earth composition according to the present invention as an agent for precoat filtration or dynamic body feed filtration in biopharmaceutical applications.

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