Embed fonts in a PDF with pdflatex

Problem

You're trying to submit a paper, and they make you embed fonts inside of the PDF. (They, for example, being IEEE PDF eXpress.)

Keywords

latex, pdflatex, pdf, embed, font, pdf2ps

Solution

Generate your pdf, turn it into a postscript file with pdf2ps, and then turn it back into a pdf while embedding the fonts: 
pdf2ps doc.pdf
ps2pdf13 -dPDFSETTINGS=/prepress doc.ps doc2.pdf