Cleansing tablets for tooth prostheses
Patent 4417993 Issued on November 29, 1983. Estimated Expiration Date: 
November 29, 2000. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
November 29, 2000. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3042621 3042622 3243377 Denture cleanser Enzyme-containing denture cleanser tablet Denture cleaning composition Method for processing textile material Feed unit of a detergent composition based on alkali carbonate Denture cleansing tablet and process for making Powdered detergent or soak Patent #: 4303542 InventorApplicationNo. 06/198413 filed on 10/20/1980US Classes:510/117, Gas generating (e.g., effervescent, etc.)424/44, Gas produced in situ by chemical reaction424/53, Oxygen or chlorine releasing compound containing510/100, WITH SAFETY OR INDICATOR FEATURE510/108, CLEANING COMPOSITIONS OR PROCESSES OF PREPARING (E.G., SODIUM BISULFATE COMPONENT, ETC.)510/374, With enzyme component of specific activity or source (e.g., protease, of bacterial origin, etc.)510/375, The bleach or oxidant component contains peroxy510/439, Package or dosing unit (e.g., sachet, wrapped cake soap, etc.)510/441, Coated or encapsulated solid material, or process of preparing510/475, Synthetic polymer or natural rubber (other than polyether, such as polyethylene glycol, alkylene oxide condensation products, etc.)510/478, With alkali metal carbonate or bicarbonate component510/506, Ether516/14, The agent contains organic compound containing sulfoxy*516/19The compound contains -C(=O)OH group or salt thereofExaminersPrimary: Albrecht, Dennis L.Attorney, Agent or FirmInternational ClassesC11D 17/00 (20060101)C11D 7/08 (20060101) C11D 7/02 (20060101) C11D 7/12 (20060101) C11D 7/18 (20060101) Foreign Application Priority Data1979-10-30 ATAbstractThe present invention is directed to an effervescent tablet for cleansing dental prostheses comprising an acidic component and an alkaline component, wherein one of said two components dissolves more slowly than the other component, with the more slowly dissolving component present in stoichiometric excess within the tablet, so that an initial acidic or alkaline pH is provided within the cleansing solution, with the pH gradually adjusting to the opposite alkaline or acidic region as the tablet effervesces. | |
