INP

Leibniz Institute for Plasma Science and Technology
Felix-Hausdorff-Str. 2
17489 Greifswald
GERMANY

https://www.inp-greifswald.de/en/
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The Leibniz Institute for Plasma Science and Technology (INP) is the largest non-university institute in the field of low temperature plasmas, their basics and technical applications in Europe. The institute carries out research and development from idea to prototype. The topics focus on the needs of the market. At present, plasmas for materials and energy as well as for environment and health are the focus of interest.

Dörte Valenthin
Patent Officer

Tel.: +49(0) 3834 554 3909
Fax: +49(0) 3834 554 301

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Method and device for plasma-treating hollow bodies

The present invention relates to a device for plasma-treating hollow bodies, such as bottles, vials, syringes, shut-off caps, etc., in particular with a view to sterilising said hollow bodies, and is equally suitable for various discharge types such as dielectric barrier discharge and discharges with high frequency and microwave excitation. The device allows a pressure gradient to be set between the interior and the exterior of the object to be treated, which can be advantageously used for process control and plasma formation and forms the basis for an optimised in-line method of plasma-treatment of hollow bodies. An essential feature of the invention is the original combination of a plasma process and a sealing system. According to the main claim, this is achieved with external tubes (4, 6), which are connected to each other so as to be impermeable to gas, but galvanically insulated, and of which at least one is electrically conductive, such that the external tubes form an antechamber between the two external tubes (4, 6) and a treatment chamber between the external tube (6) and the internal tube (1). Thus materialises a double-chamber system.

Figure 2 of the Patent Specification

Patent Info
FieldValue
Patent Family
Patent OfficePatent NumberFiledDate of PatentLegal Status
DEDE102013203648A104.03.2013----------------expired
WOWO2014/135531A104.03.2014----------------expired
EPEP2964274B104.03.201405.05.2021granted (active in Germany, France, Switzerland, Austria, Belgium, Great Britain, Ireland)
USUS9,855,355B203.09.201502.01.2018expired
Applicant(s)
Inventors
Device Info
FieldValue
Plasma Source Application
Plasma Source Specification