August 2012 UTC I ve corrected the article Jet Ski is a trademark and while the term has entered generic usage it is still covered by the courts as an active trademark The difference is that anyone can use the term Yo yo despite it once being owned by Papa s Toy Co Ltd since 1965 it has been generic and anyone can use the term Though I did update it to reflect that not all Jet Skis or jet skis are personal as they can carry 2 or more riders 05 34 27