Over here you will find free vector brand logos in Illustrator, EPS, Corel Draw format..

Brand Vector Logos start with 'I' letter

Impronta Publicidad
ISAK
Idan 2000
Ingress Enlightened
Instituto Rancho da Luz
Incube
ISS Group Peru
ISS Group Peru
ISS Ggoup Peru
Itaipava
Insituto Arapoty