** Shares of PCBL Ltd PCBL.NS up 2.8% at 269 rupees
** Carbon black maker says it has secured patent for hybrid
carbon black grade comprising Graphene; innovation includes
improvement in fuel efficiency, tire durability, load bearing
capacity
** Stock sees second-busiest day in 2 weeks, with more than
3 mln shares traded
** PCBL on track for fourth straight session of gains
** Avg rating of 7 analysts covering the stock is "strong
buy;" their median PT is 323 rupees - LSEG
** Stock up 7% YTD
(Reporting by Aleef Jahan in Bengaluru)
((aleefjahan.cs@thomsonreuters.com))