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.:
Date of Patent:
Apr. 21, 2026
Filed:
Jan. 14, 2020
Merck Patent Gmbh, Darmstadt, DE;
Merck Patent GmbH, Darmstadt, DE;
Abstract
A vacuum filtration head () having a receptacle for a support () for a membrane filter () for microbiological testing of a liquid substance to be drawn from an upstream side of the membrane filter () to a downstream side of the membrane filter () through the membrane filter (), or the support () for such membrane filter (), a drain chamber () located downstream of the support () and communicating with a downstream side of the membrane filter () receiving the liquid substance passed through the membrane filter (), and a drain channel () communicating with the drain chamber () at an opening () and communicating with a vacuum. A protective shield () is arranged in the filtration head () interfering with a fictive direct line connection while retaining a fluid path () to the drain channel () past the protective shield ().