Sherry Boschert accused Chevron of limiting access to large NiMH batteries through its stake in Cobasys corporation and control of patent licenses to remove a competitor to gasoline. Cobasys filed a patent infringement lawsuit against Panasonic and Toyota over production of the EV-95 battery used in the RAV4 EV. The case was settled with each company granting the other a license to its patents. In her book, "Plug-in Hybrids: The Cars that Will Recharge America", published in February 2007, Sherry Boschert argues that large-format NiMH batteries are commercially viable but that Cobasys refuses to sell the batteries or license the technology to small companies or individuals. Boschert argues that Cobasys accepts only very large orders for the batteries. Major automakers showed little interest in placing large orders for large-format NiMH batteries. However, Toyota complained about the difficulty in getting smaller orders of large format NiMH batteries to service the existing 825 RAV-4EVs. Because no other companies were willing to place large orders, Cobasys was not manufacturing or licensing large format NiMH battery technology for automobiles. Boschert concludes that "it's possible that Cobasys (Chevron) is squelching all access to large NiMH batteries through its control of patent licenses in order to remove a competitor to gasoline. Or it's possible that Cobasys simply wants the market for itself and is waiting for a major automaker to start producing plug-in hybrids or electric vehicles." In an interview with "The Economist", the ECD Ovonics founder Stan Ovshinsky disagreed, stating "Cobasys isn't preventing anything. Cobasys just needs an infusion of cash. They build a great battery"."