In Alien, it is simply called "The Company". In Aliens, the company is given a name. Identify the hyphenated name of the company which Ripley and her comrades work for, and which owned the atmospheric processors on LV-426 (in Alien:Resurrection, one scientist lies to Ripley, saying that this company had been bought out by Walmart, which makes you almost feel sorry for this company).
Weyland-Yutani