You're talking about corporate branding, where they often pay big money to patent a specific color and font style, etc, and don't want it used anywhere they don't approve of or in a way they aren't aware of. That's not anywhere close to being the same thing as this.

Just about every pro cg artist out there with a portfolio online displays the logos from the major software titles they use to create their work somewhere in their portfolio or on the renders themselves. They don't ask special permission to do it and no one thinks twice about it when they see it. Those logos can be found all over google just by searching for it. And any of those software companies would be idiots to complain about the use of them on renders because its free advertising for them. Sure I guess they could sue you for it if they really wanted to, but they'd just be cutting their own throats in the process as less and less artists would use their software because of it. 

But I guess it's good to be cautious. 

You could always ask Steve Cooper for permission. I'm sure he'd not only agree to it but likely encourage it.