Hang on then. "Known Space" was Larry Niven's ball of wax.
Indeed, his general unwillingness to work outside Known Space, and the general unwillingness of other authors to work in it, hobbled Niven's opportunity for collaboration. The animated
Star Trek series adapted "The Slaver Weapon" with some success.
Without looking it up, I thought that in "Known Space" a corporation called General Spaceships or something like that, pretty much made all "space hulls" (which were transparent and near indestructible) and that most if not all spaceships were built using these hulls as the core."
General Products, the Puppeteer corporation. The premise of "Neutron Star" was to hire Beowulf Shaeffer to discover what strange force had managed to penetrate a General Products hull and kill its crew.