# US 9,775,444 B2 · Foam with green tea additive for foam mattresses, pillows and cushions > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,775,444 B2 - Document ID: US9775444B2 - Status: Granted - Kind: B2 - Application number: 15/168,068 - Filed: 2016-05-29 - Published: 2016-09-22 - Granted: 2017-10-03 - Earliest claimed: 2007-06-18 - Assignees: Zinus Inc. - Applicants: Zinus Inc. - Inventors: Suk Kan Oh - Web page: https://patentgrep.com/patent/US9775444B2 ## CPC - A47C 31/005: {Use of aromatic materials, e.g. herbs} - A47C 27/14: with foamed material inlays - A47C 27/15: consisting of two or more layers (A47C27/16 takes precedence) - A47C 31/004: {Means for protecting against undesired influence, e.g. magnetic radiation or static electricity} - A47C 31/007: {Anti-mite, anti-allergen or anti-bacterial means} - A47G 9/007: {comprising deodorising, fragrance releasing, therapeutic or disinfecting substances} - A47G 9/109: {adapted to lie on the side and in supine position} - A61F 5/56: Devices for preventing snoring - C08H 8/00: Macromolecular compounds derived from lignocellulosic materials {(pretreatment thereof B27N)} - C08J 9/0004: {Use of compounding ingredients, the chemical constitution of which is unknown, broadly defined, or irrelevant} - C08L 97/02: Lignocellulosic material, e.g. wood, straw or bagasse {(manufacture of articles made from lignocellulosic material by dry processes B27N)} - A47G 2009/1018: {Foam pillows} - A47C: CHAIRS; SOFAS; BEDS - A47G: HOUSEHOLD OR TABLE EQUIPMENT (book-ends A47B5/00; knives B26B) - A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C) - C08H: DERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS (polysaccharides C08B; natural rubber C08C; natural resins or their derivatives C09F; bituminous materials C10) - C08J: WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H (working, e.g. shaping, of plastics B29) - C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06) ## Abstract A method of making foam imparts antimicrobial and antiodorant qualities to the foam. Green tea powder is added to the polyol raw materials for making memory foam. The green tea memory foam is used to make pillows, cushions and mattresses. Green tea foam in the top layer of a mattress acts as an antiodorant such that less of the chemical smell of the memory foam is perceived by the user. In addition, the bacteria and mold that would otherwise develop in the moist warmer sleeping environment on memory foam are killed by the green tea additive to the foam. Measurable antimicrobial and antiodorant qualities in the green tea foam are achievable by adding green tea powder constituting less than 2% of the weight of the resulting green tea foam. A neck-support contour pillow is made using memory foam that contains green tea and a green dye. ## Claims ### Claim 1 A mattress comprising: a first layer of foam of a first type; a second layer of foam of a second type disposed above the first layer, wherein the second type of foam contains visco-elastic polyurethane foam and green tea, and wherein the second type of foam has a density of three pounds per cubic foot or greater and an indentation load deflection of six or greater; and a fabric covering around the mattress. ### Claim 2 (depends on 1) The mattress of claim 1, wherein the first type of foam is high density (HD) foam. ### Claim 3 (depends on 1) The mattress of claim 1, wherein the second type of foam is memory foam. ### Claim 4 (depends on 1) The mattress of claim 1, wherein the green tea constitutes less than 2% of the weight of the second type of foam. ### Claim 5 (depends on 1) The mattress of claim 1, wherein the second type of foam contains green tea in a form taken from the group consisting of: a powder of green tea leaves, a powder of green tea stems, and a water solution of green tea extract. ### Claim 6 (depends on 1) The mattress of claim 1, wherein the second type of foam has a stable cell structure that provides sufficient support to prevent a user from bottoming out on the first layer of foam. ### Claim 7 (depends on 1) The mattress of claim 1, wherein the second layer of foam is a top layer of the mattress upon which a user directly rests. ### Claim 8 (depends on 1) The mattress of claim 1, wherein the fabric covering directly contacts the second layer of foam. ### Claim 9 (depends on 1) The mattress of claim 1, wherein the mattress has an overall thickness made up at least 10% by the second layer. ### Claim 10 (depends on 1) The mattress of claim 1, wherein the second type of foam contains a green dye, and wherein the second type of foam is colored green. ### Claim 11 A mattress comprising: a layer of a first foam type; a layer of memory foam infused with green tea, wherein the layer of memory foam is disposed adjacent to the layer of the first foam type, and wherein the memory foam has a density of three or more pounds per cubic foot and an indentation load deflection of six or more; and a fabric covering around the mattress. ### Claim 12 (depends on 11) The mattress of claim 11, wherein the memory foam contains visco-elastic polyurethane foam. ### Claim 13 (depends on 11) The mattress of claim 11, wherein the first foam type is high density (HD) foam. ### Claim 14 (depends on 11) The mattress of claim 11, wherein the layer of memory foam is a top layer of the mattress upon which the user directly rests through the fabric covering. ### Claim 15 (depends on 11) The mattress of claim 11, wherein the memory foam contains a green dye, and wherein the memory foam is colored green. ### Claim 16 A mattress comprising: a layer of a first foam type; a layer of memory foam infused with green tea, wherein the layer of memory foam is disposed adjacent to the layer of the first foam type, and wherein the memory foam has a density of three or more pounds per cubic foot and an indentation load deflection of six or more; and a covering around the mattress. ### Claim 17 (depends on 16) The mattress of claim 16, wherein the memory foam is made of visco-elastic polyurethane foam. ### Claim 18 (depends on 16) The mattress of claim 16, wherein the memory foam becomes softer in the presence of body heat. ### Claim 19 (depends on 16) The mattress of claim 16, wherein the first foam type is high-density polyurethane (HD) foam. ### Claim 20 (depends on 16) The mattress of claim 16, wherein the memory foam has a stable cell structure that provides sufficient support to prevent a user from bottoming out on the layer of the first foam type.