USB-IF, I2C (usually people will say "I2C-compatible", or Two-Wire Interface to avoid paying a royalty) are two others that come to mind immediately. Edit: Bas

USB-IF, I2C (usually people will say "I2C-compatible", or Two-Wire Interface to avoid paying a royalty) are two others that come to mind immediately. Edit: Basically any interface logos you use (stickers above ports) are probably owned by someone.