In reference to the patent: US20100065236
Why was it rejected in the US?
The best way to get specific information about a US patent or application is the US Public Pair site. In this case, you get past a CAPTCHA, enter "20100065236", select "document number" and you will find that this application's status is "Abandoned -- Failure to Respond to an Office Action". The Transaction History tab lists communications between the inventor's agent and the USPTO. You can order the file wrapper if you don't mind paying something.