Mark Zuckerberg is deeply involved with the design the UI of Facebook. Last week another patent from Facebook mentioned Mark as the inventor.

Patent Information:

US D736,814 S

DISPLAY PANEL OF A PROGRAMMED COMPUTER SYSTEM WITH A GRAPHICAL USER INTERFACE
Mark E. Zuckerberg, Palo Alto, CA (US); and Eyal Michael Sharon, San Francisco, CA (US)
Assigned to Facebook, Inc., Menlo Park, CA (US)
Filed by Facebook, Inc.
Filed on Oct. 9, 2014, as Appl. No. 29/504,814.
Application 29/504,814 is a division of application No. 29/407,112, filed on Nov. 23, 2011, granted, now D717816.
Application 29/407,112 is a continuation of application No. 29/398,029, filed on Jul. 25, 2011, abandoned.