Trademark (TM) symbol appearing junk in excel

Hi Gurus,

I have developed an export functionality using webdynpro where a user can export a sap table data onto a ms-excel sheet. But I could see the trademark symbol as ADEâ(instead of TM as superscript). Also there are junk values while printing the long text as shown below (highlighted section)

Could you please throw some light as how to fix this issue. I have tried changing the MIME types but still no luck.

Currently MIME type is EXCEL and file extension is .xls

Thank you,

Regards,

Vivek