Toothbrush
Patent 5533227 Issued on July 9, 1996. Estimated Expiration Date: 
June 23, 2015. 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.
June 23, 2015. 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 74560 403542 1115165 2273717 2511004 3186018 3742549 3930106 Toothbrushes Toothbrush InventorsAssigneeApplicationNo. 494008 filed on 06/23/1995US Classes:15/167.1, Tooth or nail brush15/207.2Bristle configuration or compositionExaminersPrimary: Scherbel, David A.Assistant: Soohoo, Tony G. Attorney, Agent or FirmForeign Patent References
International ClassA46B 009/04Foreign Application Priority Data1992-06-22 JPAbstractA toothbrush capable of permitting tips of fillings thereof to enter or reach areas such as recesses between teeth, boundaries between teeth and gingivae, and the like to effectively remove dental plaque and the like and exhibit a soft feeling sufficient to prevent damage to gingivae. The toothbrush includes fillings made of a synthetic filament material. The fillings are each formed at both tips thereof into a pointed tapered shape and tied up into a plurality of bundles. The pointed tapered tips of the fillings are each formed with a length of 4 to 8 mm and a non-tapered section of each of the fillings is formed with a maximum diameter of 0.16 to 0.20 mm. Filling setting holes of a filling setting base provided at distal end of a handle of the toothbrush so as to set the bundles of the fillings thereon are formed with a diameter of 1.5 to 2.0 mm and spaced from other holes at an interval of 1.0 to 1.2 mm in the longitudinal direction of the handle. | |
