# US 2021/0274779 A1 · Sterilizing agents, their method of manufacture and uses

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- Number: US 2021/0274779 A1
- Document ID: US20210274779A1
- Status: Published application
- Kind: A1
- Application number: 17/244,958
- Filed: 2021-04-30
- Published: 2021-09-09
- Earliest claimed: 2012-08-10
- Inventors: Tsukasa SAKURADA
- Web page: https://patentgrep.com/patent/US20210274779A1

## CPC

- A01N 25/34: Shaped forms, e.g. sheets, not provided for in any other sub-group of this main group
- A01N 25/08: containing solids as carriers or diluents
- A01N 59/16: Heavy metals; Compounds thereof
- A01N 59/20: Copper
- A61P 17/00: Drugs for dermatological disorders
- A61P 17/02: for treating wounds, ulcers, burns, scars, keloids, or the like
- A61P 17/04: Antipruritics
- A61P 31/02: Local antiseptics
- A61P 31/04: Antibacterial agents
- A61P 31/10: Antimycotics
- A61P 31/12: Antivirals
- A61P 37/08: Antiallergic agents (antiasthmatic agents A61P11/06; ophthalmic antiallergics A61P27/14)
- C09D 5/14: Paints containing biocides, e.g. fungicides, insecticides or pesticides (C09D5/16 takes precedence)
- Y02W 10/40: Valorisation of by-products of wastewater, sewage or sludge processing
- Y10T 156/10: Methods of surface bonding and/or assembly therefor
- Y10T 442/2525: Coating or impregnation functions biologically [e.g., insect repellent, antiseptic, insecticide, bactericide, etc.]
- A01N: PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF (preservation of food or foodstuff A23); BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES (preparations for medical, dental or toiletry purposes which kill or prevent the growth or proliferation of unwanted organisms A61K); PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A61P: SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D)
- Y02W: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

The sterilizing and deodorizing agents target bacteria, odors, toxic substances, etc. and are made from silver as metal particles and titanium dioxide as ceramic particles by (1) thermal bonding or (2) pressure bonding or (3) thermal/pressure bonding and mixing the resultant with hydroxyapatite as an adsorptive material. The agent can be mixed with ink, bonding agents and paints and applied to a variety of substrates.

## Claims

### Claim 1

An element comprising:
metal particles selected from the group consisting of gold, silver, platinum, copper and combinations thereof; and
ceramic particles comprising titanium dioxide,
wherein the metal particles and the ceramic particles are bonded together, and one of at least a part of one of the metal particles or at least a part of one of the ceramic particles is ingrown into the other,
wherein the metal particle is ingrown into the ceramic particle by pressure bonding or a combination of pressure bonding and thermal bonding.

### Claim 2 (depends on 1)

The element according to claim 1, wherein the element has an effect without a presence of light which is a same effect as the element has under light.

### Claim 3 (depends on 1)

The element according to claim 1, wherein a weight ratio of the metal particles is 0.1-10% of the total weight, and a weight ratio of the ceramic particles is 90-99.9% of the total weight.

### Claim 4 (depends on 2)

The element according to claim 2, wherein the effect comprises at least one of sterilizing effect, an effect of decomposing bacteria, viruses, allergens, and fungus, odor substances and toxic substances.

### Claim 5 (depends on 1)

An agent comprising the element according to claim 1.

### Claim 6 (depends on 3)

The element according to claim 3, wherein the element has the effect when light is irradiated to the element.