Building Ecke Kleist-Martin-Luther-Strasse

I always thought you can find everything in the internet but in fact it's quite difficult to find specific information about interesting buildings that didn't make it to the classics. I could only find one page (http://www.skyscrapercity.com/showthread.php?t=854524) stating that this building is called Philips-Haus and it was built by Paul Schwebes but when I search for the architects oeuvre it's mentioned nowhere. So if anybody out there has more information, i would appreciate.