Of all the companies investing in graphene research and product development at the moment SanDisk is perhaps the one to watch. Ranked second in the Top 20 of graphene patent applicants with the first application only made in 2006, SanDisk is only outclassed by the much bigger Samsung, a company whose 60 applications dwarf SanDisk’s mere 31. As a potential graphene stock investment SanDisk’s shares have nearly doubled in the last three months and shown a 500% increase in share price over the past three years. The second quarter of 2011 produced the best quarterly revenue in the company’s history at $1.375 billion.

SanDisk is best known as a global market leader in flash memory storage devices, and for its commitments to research and development, product design and manufacturing, branding and distribution for OEM and retail channels. Since 1988, SanDisk’s innovations have attracted customers to the company; their digital expertise and diverse product portfolio has been at the heart of the IT revolution and includes embedded solutions used in smart phones, tablets, digital cameras, camcorders, digital media players and other consumer electronic devices.

The company is currently working in partnership with Toshiba in a joint venture called Flash Forward Ltd, with Sandisk holding 49.9% of the company. The collaboration recently opened a new production facility in July 2011, which is currently producing 300mm wafer thin NAND devices. The facility currently uses 24 nanometer (nm)* process technology and its first wafer outs were in August. In time, the fab will transition to more advanced process generations, starting with recently announced 19nm technology, the world’s smallest, most advanced process node.

Equities research analysts at Nomura (NYSE: NMR) initiated coverage on shares of SanDisk (NASDAQ: SNDK) in a research note issued to investors on Dec 5th 2011. They set a “buy” rating on the stock.

Separately, analysts at Sterne Agee reiterated a “neutral” rating on shares of SanDisk in a research note to investors on Tuesday, November 29th. They now have a $55.00 price target on the stock. Analysts at Stifel Nicolaus raised their price target on shares of SanDisk from $63.00 to $68.00 in a research note to investors on Tuesday, November 29th. They now have a “buy” rating on the stock. Also, analysts at Morgan Stanley (NYSE: MS) reiterated an “overweight” rating on shares of SanDisk in a research note to investors on Tuesday, November 22nd. They now have a $70.00 price target on the stock.

SanDisk is a Silicon Valley-based S&P 500 and Fortune 500 company with revenues in 2010 of more than $4.8 billion. The company has more than 3,500 employees worldwide.