Inactivation of gram-positive bacteria

US9839706B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-9839706-B2
Application numberUS-201514657398-A
CountryUS
Kind codeB2
Filing dateMar 13, 2015
Priority dateJul 29, 2005
Publication dateDec 12, 2017
Grant dateDec 12, 2017

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  1. Title

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  2. Abstract

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  5. First independent claim

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Abstract

Official abstract text for this publication.

A method for inactivating medically important Gram-positive bacteria including Methicillin-resistant Staphylococcus aureus (MRSA), Coagulase-Negative Staphylococcus (CONS), Streptococcus, Enterococcus and Clostridium species, comprising exposure to visible light, and in particular light within the wavelength range 400-500 nm.

First claim

Opening claim text (preview).

The invention claimed is: 1. A method for disinfecting air, contact surfaces or materials by inactivating one or more pathogenic Gram-positive bacteria in the air, on the contact surfaces or on the materials, said method comprising exposing the one or more pathogenic Gram-positive bacteria to visible light without using a photosensitizer, wherein the one or more pathogenic Gram-positive bacteria are selected from the group consisting of Methicillin-resistant Staphylococcus aureus (MRSA), Coagulase-Negative Staphylococcus (CONS), Streptococcus, Enterococcus , and Clostridium species, and wherein a portion of the visible light that inactivates the one or more pathogenic Gram-positive bacteria consists of wavelengths in the range 400-420 nm, and wherein the method is performed outside of the human body and the contact surfaces or the materials are non-living. 2. The method according to claim 1 wherein the visible light that inactivates has a wavelength of 405 nm. 3. A system for disinfecting air, contact surfaces or materials by inactivating one or more pathogenic Gram-positive bacteria in the air, on the contact surfaces or on the materials, the system comprising means for exposing said bacteria to visible light without using a photosensitizer, wherein the one or more pathogenic Gram-positive bacteria are selected from the group consisting of Methicillin-resistant Staphylococcus aureus (MRSA), Coagulase-Negative Staphylococcus (CONS), Streptococcus, Enterococcus and Clostridium species, and wherein a portion of the visible light that inactivates the one or more pathogenic Gram-positive bacteria consists of wavelengths in the range 400-420 nm, and wherein the system is for use outside of the human body and the contact surfaces or the materials are non-living. 4. The system according to claim 3 wherein the portion of the visible light that inactivates has a wavelength of 405 nm.

Assignees

Inventors

Classifications

  • Living organisms or biological materials · CPC title

  • A61L2/084Primary

    Visible light · CPC title

  • A61N5/06Primary

    using light · CPC title

  • Human Necessities · mapped topic

  • Radiation (A61L9/22 takes precedence) · CPC title

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What does patent US9839706B2 cover?
A method for inactivating medically important Gram-positive bacteria including Methicillin-resistant Staphylococcus aureus (MRSA), Coagulase-Negative Staphylococcus (CONS), Streptococcus, Enterococcus and Clostridium species, comprising exposure to visible light, and in particular light within the wavelength range 400-500 nm.
Who is the assignee on this patent?
Univ Strathclyde
What technology area does this patent fall under?
Primary CPC classification A61L2/084. Mapped technology areas include Human Necessities.
When was this patent published?
Publication date Tue Dec 12 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).