Copyright and Trademark Symbols in HTML

The ASCII codes can be used to create several useful symbols. Here is a description of how to use ASCII code in your html pages.

ASCII codes in html can be identified with the preceding “&#”
They should be placed into the html just as plain text. The browser should render the ASCII code as the correct symbol.

© can be created with this:

©

® can be created with this:

®

™ can be created with this:

™ 

Sumber: http://www.tech-recipes.com/rx/143/copyright-and-trademark-symbols-in-html/