Shoe, sandal or similar footwear
Patent 4955147 Issued on September 11, 1990. Estimated Expiration Date: 
December 16, 2008. 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.
December 16, 2008. 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 Re18237 3228124 3323233 3739501 Energy absorbing materials Shoe soles and method for manufacturing the same Shoe bottom Shoe construction Midsole assembly for an athletic shoe Sport sandal construction Patent #: 4584782 InventorApplicationNo. 285760 filed on 12/16/1988US Classes:36/11.5, Sandals36/28CushionExaminersPrimary: Schroeder, Werner H.Assistant: Biefeld, Diana L. Attorney, Agent or FirmForeign Patent References
International ClassA43B 003/12Foreign Application Priority Data1987-12-29 NLAbstractFootwear, such as a shoe (1) having a flat inner surface (5) and between said flat inner surface (5) and the instep a flat layer (6,12) of constant thickness for support of the foot, which flat layer (6,12) is of a highly springy elastic material with a high elastic recovery capacity, such as high density polyurethane foam. This flat layer requires the shoe to be made upon a last which allows sufficient space between instep and flat layer and accordingly is larger than is usual for a given size. | |
