Logo with the text "Mojang Specifications". Used until February 22, 2011. Mojang was founded in 2003 but didn't make any games until 2006
This logo was implemented in Beta 1.8 and was last used until 1.7.3 aka the 2013 Music Update on November 13, 2013. It was also last used on Minecraft: Xbox 360 edition and Minecraft: PlayStation 3 Edition until TU14.
This logo still is a secondary logo and its seen on labels of Minecraft toys.
In 2013, the logo was slightly modified. This new logo debuted on Minecraft version 1.7.3 aka the 2013 Music Update on November 13, 2013 and Minecraft Pocket Edition or PE 0.9.0 alpha. This logo also made it's debut on Minecraft: Xbox 360 Edition and Minecraft PlayStation 3 edition in TU14, but it looks 8-bit.