The below left graph display assignee wise IP activity over years, according to the present data the very first patent pertaining to HEV battery charging system was filed by HYBRICON in 1978 but not in the race anymore. Though NISSAN, AQUEOUS and TOYOTA seems be ahead in acquiring max. number of patent to their credits, but not active since 2000. GM and HONDA have bagged a single-single patent of same age in 2003.
The below right graph display market (countries) eyed by various competitors. The hot market place for most competitors is Japan (17) followed by United States (11) and Germany (04). According to the present data Nissan seems to be having strong presence in Japan market than rest with 5 patents protected, followed by Aqueous and Toyota.
We will look in to their technologies in competitor approaches section coming latter in the report.
[[Image:Competitor.jpg|thumb|center|700px|Competitor and Market Landscape]]
=== IPMap ===
[[Image:hev_ipmap.jpg]]