Adding fields to the “Add New User” screen in the dashboard

Question

I'd like to add the field "Company Name" to the add new user page in the admin panel. I've done quite a bit of searching and have been unable to find details on how to do this. I can easily add info to the profile page and registration with..

   function my_custom_userfields( $contactmethods ) {
    //Adds customer contact details
    $contactmethods['company_name'] = 'Company Name';
    return $contactmethods;
   }
   add_filter('user_contactmethods','my_custom_userfields',10,1);

But no dice on anything else.