Inactivation of gram-positive bacteria

US10953117B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-10953117-B2
Application numberUS-201715807488-A
CountryUS
Kind codeB2
Filing dateNov 8, 2017
Priority dateJul 29, 2005
Publication dateMar 23, 2021
Grant dateMar 23, 2021

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  1. Title

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  2. Abstract

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  3. Assignees and inventors

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  4. Key dates

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  5. First independent claim

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  7. Citations and related patents

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Abstract

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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 bacteria from one or more pathogenic Gram-positive bacterial species in the air, on the contact surfaces, or on the materials, said method comprising exposing the one or more pathogenic Gram-positive bacterial species to white light containing blue light without using a photosensitizer, wherein the one or more pathogenic Gram-positive bacterial species are selected from the group consisting of Streptococcus and Clostridium species, wherein at least a portion of the blue light that inactivates the one or more Gram-positive bacterial species consists of wavelengths in the range 400-500 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 portion of the blue light that inactivates the one or more Gram-positive bacterial species consists of wavelengths in the range 400-450 nm. 3. The method of claim 1 , wherein the portion of the blue light that inactivates the one or more Gram-positive bacterial species consists of wavelengths in the range 400-420 nm. 4. The method of claim 1 , wherein the portion of the blue light that inactivates the one or more Gram-positive bacterial species has a wavelength of about 405 nm. 5. A method for disinfecting air, contact surfaces, or materials by inactivating one or more pathogenic Gram-positive bacterial species in the air, on the contact surfaces, or on the materials, said method comprising exposing the one or more pathogenic Gram-positive bacterial species to white light containing blue light without using a photosensitizer, wherein the Gram-positive bacterial species are selected from the group consisting of Streptococcus and Clostridium species and further wherein at least a portion of the blue light that inactivates the one or more Gram-positive bacterial species consists of wavelengths in the range 400-420 nm, and wherein the method is performed outside of the human body and the contact surfaces of the materials are non-living.

Assignees

Inventors

Classifications

  • Living organisms or biological materials · CPC title

  • A61L2/084Primary

    Visible light · CPC title

  • A61N5/06Primary

    using light · CPC title

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

  • Human Necessities · mapped topic

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What does patent US10953117B2 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 Mar 23 2021 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).