Jewelry patents have been granted to jewelry manufacturers and
artisans since 1850 for protection against copying by competitors.
For precious and non precious jewelry there are design and utility
patents. Design patents are used to protect the way an article
looks, while a utility patent protects the way an article is used
and works. Design and utility patents have separate numbering
systems and utility patents far outweigh the number of design
patents.
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For instructions regarding how to file a utility design patter,
consult with the US Patent and Trademark Office. See the related
link for specific details.
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Great free utility for sprite and tile design .
http://tilestudio.sourceforge.net/
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99,220, including utility patents, plant patents, design patents, and reissues.