Could Kant have really been an utilitarian?

In this paper the author examines Hare's idea of reconciliation of utilitarianism and Kant's moral theory. The key term which connects these two theories is the idea of universality of moral notions and judgments. But the real question is: which type of universality, and how does that universality work? Hare's idea of universalisability apparently is not Kantian universality required by categorical imperative. The author concludes that main Hare's argument in favor of "Kantian utilitarianism" is based upon basic misunderstanding of central notions of Kant's ethical theory.