09867426 is referenced by 18 patents and cites 34 patents.

An article of footwear includes a sole structure that has a heel portion with a rear, a lateral side, and a medial side. The article of footwear includes a heel extender that has a rear segment disposed at the rear of the heel portion, a lateral arm disposed at the lateral side of the heel portion, and a medial arm disposed at the medial side of the heel portion. The heel extender has a protuberance that establishes a rearmost extent of the article of footwear. The sole structure has a first hardness and the protuberance has a second hardness greater than the first hardness.

Title
Article of footwear with heel extender
Application Number
15/63968
Publication Number
9867426 (B2)
Application Date
March 8, 2016
Publication Date
January 16, 2018
Inventor
Robert Charles Williams Jr
Beaverton
OR, US
Anthony P Daversa
Beaverton
OR, US
Drew Conant
Lake Oswego
OR, US
Agent
Quinn IP Law
Assignee
NIKE
OR, US
IPC
A43B 13/14
A43B 13/22
A43B 13/04
A43B 13/12
A43B 13/18
A43B 13/00
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