Antimicrobial solid material, process for producing the same, and method of utilizing the same
US5961843A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 3, 1997 |
| Grant date | Oct 5, 1999 |
| Priority date | — |
| Expiry date | Apr 3, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W10/37
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An antimicrobial solid material having a satisfactory antimicrobial activity for a long term against sewage in any form of circulating, static and flowing waters or contacting portions thereof and a utilizing method thereof are provided. An antimicrobial solid material as one embodiment of the present invention comprises both of an antimicrobial metal ion and an antimicrobial metal in a metal state. In general, it is believed that antimicrobial metal ions have a potent antimicrobial effect when they exist in a liquid to be treated with a certain concentration or more, but they are rapidly released and exhausted so that their antimicrobial effects cannot last long. On the other hand, it is believed that the antimicrobial metal in a metal state does not have a prompt effect, but exhibits a certain bacteriostatic and fungistatic effect continuously for a long term. Therefore, the antimicrobial solid material containing both of the antimicrobial metal ions and the antimicrobial metal in a metal state thereof has both of a potent initial antimicrobial activity and an enduring bacteriostatic and fungistatic activity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.