According to Wikipedia (yes, yes grain of salt and all that), she was asked by the inventors of google for some preliminary logo ideas. The playful use of color along with its use of Times New Roman-esque typeface was what was attracted them to her design. The other search engines at the time of Google's launch were commercial portals first and search engines secondarily, so the logo had to be different in order to help differenciate themselves and their search engine centric ideology from the other companies. . The typeface chosen is :
"based on Catull, an old style serif typeface. Catull borrows elements from traditional writing instruments such as the quill and the chisel with a modern twist. Search, by nature, is an activity that requires we look into the past. Therefore Catull’s historical ties seemed appropriate, as did the bridging between the old analog world and the new emerging digital era."
In addition to designing the Google logo, she has done other logos as well, albeit none of the companies are as famous as Google. She also is fairly well known for her designs and redesigns of playing cards (and as her master's thesis was on playing card design, this makes sense) She also has artwork and exhibitions that have been shown around the world.
Sources used :
http://blog.inkd.com/inkd_website/most-famous-logo-designers-in-graphic-design-history
http://en.wikipedia.org/wiki/Ruth_Kedar
http://blogoscoped.com/archive/2008-01-14-n16.html
http://www.kedardesigns.com/
