Electronic Journal of Differential Equations, Vol. 2005(2005), No. 66, pp. 1-14. Title: Cone-valued impulsive differential and integrodifferential inequalities Authors: Sam Olatunji Ale (National Math. Centre, Abuja, Nigeria) Benjamin Oyediran Oyelami (National Math. Centre, Abuja, Nigeria) Maligie S. Sesay (Abubakar Tafawa Balewa Univ., Nigeria) Abstract: In this paper, we present impulsive analogues of the Gronwall-Bellman inequalities. Conditions for the existence of maximal solutions of some integrodifferential equations are obtained by finding upper bounds for these inequalities. Using monotone iterative techniques and a fixed point theorem, we obtained a priori estimates for the inequalities. Submitted February 7, 2005. Published June 23,2005. Math Subject Classifications: 34A37. Key Words: Strict set contraction; monotone iterations techniques; measure of non-compactness; maximal solutions