OP here. I don't know how this worked, but in Word instead of Saving to PDF or Printing to PDF, I tried "Share" and then "Send Adobe PDF for Review" and that retained the original font (Tangerine), which neither of the other methods did.
HI, I am also getting the same issue. While converting the word to pdf, all my fonts are embedded in it. but when i use the MS SDK for "save as" to convert word to pdf , the purchased fonts are not added to pdf.