Microsoft is trademarking other new names, too, including “Sift” and “Swivel.”

Like its recent trademark application for Bing, the one for Sift is broad and inconclusive. As Paid Content notes, the application says that Sift could be the name for an “operating system software for mobile phones; computer search engine software; computer programs for searching email, text messages, address and contact information.”

The trademark application for Swivel sounds as if it is more closely tied to mobile phones — and possibly be the new name for Windows Mobile.