following are the leaders of 2005-
WARNER with 9 patents, [[Image:Active.jpg|frame|Active asssignees]]
BRISTOL with 6 and
ABBOTT with 5.
[[Image:Active.jpg|thumb|center|700px|Active Assignees]]
== Anti-androgens ==
* DHT attaches to the Androgen Receptor.
* DHT causes increase in hair loss and gradual miniaturization of the follicle, which eventually dies causing hair loss
[[Image:Andogen1.jpg]]
[[Image:Andogen2.jpg|thumb|center|700px|Anti-androgen]]