The Stanley cup finals have only went up to 7 games and never past.
27 different teams
13 current NHL teams have not won the Stanley Cup, if the Ottawa Senators are counted. The original Ottawa Senators won numerous Stanley Cups, but the newer expansion team has not. If the Ottawa Senators are not counted, then this number falls to 12.
13
about 80
4
Actually the US has not won any Stanley Cups as the trophy is not a national award given to national teams of any country. Many NHL teams based in American cities have won the championship, including this year by the Boston Bruins. For a list of US based teams that have won, simply Google "Stanley Cup Winners" and see those cities for yourself!
45
24 of them.
Two
3
None. The Stanley Cup was previously awarded to the Canadian hockey champion, and later to the champion of the National Hockey League. It has never been a stake in a competition between national teams from any country.