# US 12,758,480 B2 · Particulate silica silylate kit for treatment of surfaces for hydrophobicity characteristics > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,758,480 B2 - Document ID: US12758480B2 - Status: Granted - Kind: B2 - Application number: 18/464,227 - Filed: 2023-09-10 - Published: 2023-12-28 - Granted: 2026-10-13 - Earliest claimed: 2021-07-01 - Assignees: Chalkless, Inc. - Applicants: Chalkless Inc. - Inventors: James M. Pidhurney - Web page: https://patentgrep.com/patent/US12758480B2 ## CPC - A61K 8/585: {Organosilicon compounds} - A61K 8/042: {Gels} - A61Q 15/00: Anti-perspirants or body deodorants (deodorisation of air A61L9/00) - A61Q 17/00: Barrier preparations; Preparations brought into direct contact with the skin for affording protection against external influences, e.g. sunlight, X-rays or other harmful rays, corrosive materials, bacteria or insect stings - A63B 23/16: for hands or fingers {(for teaching typing G09B13/00)} - B65D 47/04: Closures with discharging devices other than pumps - B65D 83/06: for dispensing powdered or granular material - C01B 33/1585: {Dehydration into aerogels} - C01B 33/159: Coating or hydrophobisation - C01B 33/18: Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof (preparation of aerogels by dehydrating gels C01B33/158; treatment to enhance the pigmenting or filling properties C09C) - C09K 3/149: {Antislip compositions} - A61J 1/1412: {Containers with closing means, e.g. caps} - A61K 2800/412: Microsized, i.e. having sizes between 0.1 and 100 microns - A61K 2800/652: The particulate/core comprising organic material - A61K 2800/87: Application Devices; Containers; Packaging - C01P 2004/51: Particles with a specific particle size distribution - C01P 2004/61: Micrometer sized, i.e. from 1-100 micrometer - A61K: PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES (devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms A61J3/00; chemical aspects of, or use of materials for deodorisation of air, for disinfection or sterilisation, or for bandages, dressings, absorbent pads or surgical articles A61L; soap compositions C11D) - A61Q: SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS - A63B: APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT (apparatus for passive exercising, massage A61H) - B65D: CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES - C01B: NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; {METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C} - C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE - A61J: CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE - C01P: INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS ## Abstract The present invention provides a method and kit for the treatment of surfaces, such as the skin surface of a user, to impart hydrophobic characteristics upon the surface. The treatment of surfaces to impart hydrophobicity protects equipment, personnel, and animals from the effects of aqueous solutions such as water, toxic slurries, concrete, acids and bases. ## Claims ### Claim 1 A silica silylate skin treatment kit comprising: at least two pluralities of silica silylate particles, each having an average maximum cross-sectional dimension; wherein the average maximum cross-sectional dimension of a first plurality of the at least two pluralities of silica silylate particles is about 0.5 mm to 1.5 mm; wherein the first plurality of the at least two pluralities of silica silylate particles represents at least about 99% of the volume of silica silylate particles in the container; wherein the silica silylate particles of the kit are not in a liquid composition; wherein the silica silylate has been rendered hydrophobic by reaction with a hydrophobe; and wherein the silica silylate particles are contained within a container comprising a plurality of apertures. ### Claim 2 (depends on 1) The kit of claim 1, wherein the average maximum cross-sectional dimension of a second plurality of the at least two pluralities of silica silylate particles is less than 1 mm. ### Claim 3 (depends on 1) The kit of claim 1, wherein the average maximum cross-sectional dimension of a second plurality of the at least two pluralities of silica silylate particles is less than 0.5 mm. ### Claim 4 (depends on 1) The kit of claim 1, wherein the average maximum cross-sectional dimension of the first plurality of the at least two pluralities of silica silylate particles is about 0.7 mm to 1.2 mm. ### Claim 5 (depends on 3) The kit of claim 3, further comprising a third plurality of the at least two pluralities of silica silylate particles, wherein the third plurality of silica silylate particles has an average maximum cross-sectional dimension that is greater than the average maximum cross-sectional dimension of the second plurality of silica silylate particles. ### Claim 6 (depends on 5) The kit of claim 5, wherein the average maximum cross-sectional dimension of the third plurality of silica silylate particles is greater than about 0.1 mm. ### Claim 7 A silica silylate skin treatment kit comprising: a container adapted to allow for the application of the silica silylate to the skin of a user; at least a first plurality of silica silylate particles having an average maximum cross-sectional dimension contained within the container; wherein the first plurality of silica silylate particles represents at least about 99% of the volume of silica silylate particles in the container; wherein the silica silylate has been rendered hydrophobic by reaction with a hydrophobe; and wherein the container does not contain a liquid. ### Claim 8 (depends on 7) The kit of claim 7, wherein the average maximum cross-sectional dimension of the first plurality of silica silylate particles is about 0.5 mm to 1.5 mm. ### Claim 9 (depends on 7) The kit of claim 7, wherein the average maximum cross-sectional dimension of the first plurality of silica silylate particles is about 0.7 mm to 1.2 mm. ### Claim 10 (depends on 7) The kit of claim 7, wherein the average maximum cross-sectional dimension of the first plurality of silica silylate particles is about 1.2 mm to 4 mm. ### Claim 11 (depends on 7) The kit of claim 7, wherein the average maximum cross-sectional dimension of the first plurality of silica silylate particles is greater than 1.2 mm. ### Claim 12 A silica silylate skin treatment kit comprising: at least two pluralities of silica silylate particles, each having an average maximum cross-sectional dimension; wherein the average maximum cross-sectional dimension of a first plurality of the at least two pluralities of silica silylate particles is less than about 0.5 mm; wherein the first plurality of the at least two pluralities of silica silylate particles represents less than 1% of the volume of silica silylate particles in the container; wherein the silica silylate particles of the kit are not in a liquid composition; wherein the silica silylate has been rendered hydrophobic by reaction with a hydrophobe; and wherein the silica silylate particles are contained within a container comprising a plurality of apertures. ### Claim 13 (depends on 12) The kit of claim 12, wherein the average maximum cross-sectional dimension of a second plurality of the at least two pluralities of silica silylate particles is greater than about 0.1 mm. ### Claim 14 (depends on 12) The kit of claim 12, wherein the average maximum cross-sectional dimension of a second plurality of the at least two pluralities of silica silylate particles is about 0.7 to 1.2 mm. ### Claim 15 (depends on 13) The kit of claim 13, further comprising a third plurality of the at least two pluralities of silica silylate particles, wherein the third plurality of silica silylate particles has an average maximum cross-sectional dimension that is greater than the average maximum cross-sectional dimension of the second plurality of silica silylate particles. ### Claim 16 (depends on 15) The kit of claim 15, wherein the average maximum cross-sectional dimension of the third plurality of silica silylate particles is about 0.7 to 1.2 mm.