Method of maintaining sterile environment of working chamber, and sterile environment maintaining apparatus
US11478562B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 12, 2020 |
| Grant date | Oct 25, 2022 |
| Priority date | — |
| Expiry date | May 31, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01L1/04
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A technique is provided whereby hydrogen peroxide introduced into a working chamber containing a resin component is reduced to a low concentration in a shorter time than before. The present invention resides in a method of maintaining a sterile environment of a working chamber that contains a resin component, and includes a step (a) of introducing hydrogen peroxide into the working chamber, a step (b) of introducing air into the working chamber through a filter after completion of the step (a), a step (c) of generating ozone by irradiating the air with ultraviolet having a peak wavelength of from 160 nm to less than 200 nm upstream of the filter or inside the working chamber and introducing the ozone into the working chamber, and a step (d) of decomposing the ozone introduced into the working chamber into oxygen radicals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.