The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 17, 1979
Filed:
Jun. 23, 1977
Antoine Kawam, Washington, DC (US);
The Gillette Company, Boston, MA (US);
Abstract
A chewable tooth cleaning device comprising from 2.45 to 9.0 cm.sup.3 of substantially closed-cell compressible polymeric foam having a substantially skin-free surface adapted to scrub exposed tooth surfaces. In particular, the polymeric foam has about 12 to 50 cells per linear centimeter, a water absorptivity of less than 1.0 mg/cm.sup.3 after being submerged in water for 24 hours, a tensile strength of at least 3.4.times.10.sup.5 Pa, a compressive strength of at least 5.5.times.10.sup.4 Pa at 10% deflection, and at least 8.3.times.10.sup.4 Pa at 25% deflection, a tear strength of at least 1.38.times.10.sup.5 Pa, and is sufficiently resilient to return to at least 90% of its uncompressed height almost immediately after being compressed to 10% of its uncompressed height.