...
<ref>
<element-citation publication-type="patent">
<person-group person-group-type="inventor">
<name><surname>Cho</surname>
<given-names>ST</given-names></name>
</person-group>
<collab collab-type="assignee">Hospira, Inc.</collab>
<article-title>Microneedles for minimally invasive
drug delivery</article-title>
<source>United States patent</source>
<patent country="US">US 6,980,855</patent>
<year iso-8601-date="2005-12-27">2005</year>
<month>Dec</month>
<day>27</day>
</element-citation>
</ref>
...

                  
...
<ref>
<mixed-citation publication-type="patent">
<string-name><surname>Cho</surname>
<given-names>ST</given-names></string-name>, inventor;
<collab>Hospira, Inc.</collab>, assignee.
<article-title>Microneedles for minimally invasive
drug delivery</article-title>. <source>United States
patent</source> <patent country="US">US 6,980,855</patent>.
<year iso-8601-date="2005-12-27">2005</year>
<month>Dec</month> <day>27</day>.</mixed-citation>
</ref>
...