Dentifrice containing microencapsulated oxygen
Patent 4867988 Issued on September 19, 1989. Estimated Expiration Date: 
April 8, 2007. 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.
April 8, 2007. 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 959605 2054742 2120430 3639574 Gelled reagent materials Encapsulation by entrapment Encapsulation by entrapment Dental preparation, article and method for storage and delivery thereof Method for deodorizing hypochlorite denture cleansing solutions and product containing a delayed release hypochlorite deactivator Germicidal composition InventorAssigneeApplicationNo. 07/035756 filed on 04/08/1987US Classes:424/490, Coated (e.g., microcapsules)424/53, Oxygen or chlorine releasing compound containing424/616Hydrogen peroxideExaminersPrimary: Rose, Shep K.Attorney, Agent or FirmInternational ClassesA61K 33/40 (20060101)A61K 9/50 (20060101) AbstractA stable oxygen-containing dentifrice in powder, paste or liquid form which contains a carrier and evenly dispersed therethrough a multiplicity of microencapsulated droplets of an oxygen releasing agent such as hydrogen peroxide. The walls of the microcapsules are rupturable upon mechanical manipulation of the dentifrice as it occurs during the toothbrushing action for releasing the oxygen-containing agent.Other References
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