Notch filter coatings for use in sunscreen applications
US-9889074-B2 · Feb 13, 2018 · US
Controlling zinc oxide particle size for sunscreen applications
US10682295B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10682295-B2 |
| Application number | US-201715449182-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 3, 2017 |
| Priority date | Sep 3, 2015 |
| Publication date | Jun 16, 2020 |
| Grant date | Jun 16, 2020 |
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- Title
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Abstract
Official abstract text for this publication.
Zinc oxide compositions and methods for controlling zinc oxide particle size for sunscreen applications are provided herein. An example composition includes multiple zinc oxide particles, wherein each of the zinc oxide particles is (i) coated with an optical coating material and (ii) of a size that is below a maximum threshold; and a medium layer within which the zinc oxide particles are suspended, wherein the medium layer comprises a mixture of one or more media, and wherein each of the media has a refractive index below a predetermined threshold.
First claim
Opening claim text (preview).
What is claimed is: 1. A composition consisting of: multiple zinc oxide particles aggregated into one or more clusters, wherein each of the multiple zinc oxide particles is (i) coated with silicon dioxide of a user-controlled thickness based on a desired reduction of scattering of visible light by the multiple zinc oxide particles and (ii) of a size that is below a predetermined maximum threshold of 80 nanometers and above a predetermined minimum threshold of 30 nanometers, wherein the one or more clusters each is a size of greater than 200 nanometers, wherein each of the one or more clusters comprises the multiple silicon dioxide-coated zinc oxide particles bound to a respective anchoring particle, wherein the anchoring particle comprises a zinc oxide particle having a modified surface, wherein the modified surface of each respective anchoring particle physically contacts the optical coating of each of the silicon dioxide-coated zinc oxide particles within the respective cluster via direct modified surface of anchoring particle-to-silicon dioxide contact, and wherein the silicon dioxide-coated zinc oxide particles bound to the respective anchoring particle are optically separate from one another; and a media layer consisting of water, coconut oil, mineral oil, polyparabens, and shea butter.
Assignees
Inventors
Classifications
- A61K8/27Primary
Zinc; Compounds thereof · CPC title
Topical preparations for affording protection against sunlight or other radiation; Topical sun tanning preparations · CPC title
Containing particulates characterized by their shape and/or structure (see also A61K8/04, A61K8/11, and A61K8/14, further aspects are classified in A61K2800/40 and subcodes) · CPC title
of vegetable origin · CPC title
The particulate/core comprising inorganic material · CPC title
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- What does patent US10682295B2 cover?
- Zinc oxide compositions and methods for controlling zinc oxide particle size for sunscreen applications are provided herein. An example composition includes multiple zinc oxide particles, wherein each of the zinc oxide particles is (i) coated with an optical coating material and (ii) of a size that is below a maximum threshold; and a medium layer within which the zinc oxide particles are suspen…
- Who is the assignee on this patent?
- IBM
- What technology area does this patent fall under?
- Primary CPC classification A61K8/27. Mapped technology areas include Human Necessities.
- When was this patent published?
- Publication date Tue Jun 16 2020 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 6 related publications on this page (citations in our corpus or others sharing the same primary CPC).