What are the benefits of becoming a chess (player, team or tournament) sponsor? It is probably well known that Magnus Carlsen is sponsored by Arctic Securities. An example of a tournament sponsorship is the Annual Rilton Cup sponsored by the Rilton Foundation. What are the benefits of sponsoring and becoming a partner of a chess player, team or tournament? Additionally, can you think of any more examples of sponsorships in the present and past?
How about this benefit?


  It is probably well known that Magnus Carlsen is sponsored by Arctic
  Securities.


Being well known is the benefit. One minute ago I had not even heard about arctic securities. And now I know, as well as may be thousand of other people watching/reading about the game. Why Vodaphone or whatever is sponsoring football? Do they care, do they have any connection to football? - No.

The idea behind sponsorship is always the same - let people know about you or see your sign.

Answer to Rauan's comment:

I do not want to disappoint you, but there is nothing unique about sponsorship in chess. In business all that matters is money / revenue / stock prices / public awareness. 

Why did IBM gave half a million in 1996 to Kasparov for a match with a machine? They did not care about chess, they cared about advertising and stock market price. That's why they cared so much about the rematch in 1997 giving $1.1M for it and offering $0.7M to a winner. Not a lot of chess players who know about the matches, know how this ended up for IBM


  IBM estimated it received $500 million of free publicity from the
  match, and IBM stock prices went up over $10 to reach a new high for
  the company.


I think this is one of the best money investments.