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:
May. 01, 2001
Filed:
May. 07, 1999
Lars Hauer Larsen, DK-8382 Hinnerup, DK;
Niels Peter Revsbech, DK-8200 Århus N, DK;
Thomas Kjær, DK-8000 Århus C, DK;
Other;
Abstract
The invention relates to a microsensor for the measurement of the presence and the concentration of a primary medium, for example nitrate, in an environment where the microsensor is placed. The microsensor has a casing which surrounds a transducer and a reservoir containing nutrients. The transducer has a tip placed at a distance from the opening of the casing. Between the transducer tip and the opening is a reaction chamber with bacteria. The bacteria metabolises the primary medium (nitrate) into a secondary medium (nitrous oxide) which is detected by the transducer. The casing has a passage that stretches to the reservoir behind the transducer tip. Through the passage nutrients are fed to the bacteria whereby their activity can be maintained.