The Cupertino, Calif. company's share of all tablet sales jumped 44% in the second quarter over the previous three-month stretch, said IHS iSuppli. Apple's iPad accounted for 70% of the 24.4 million tablets sold in the period ending June 30. In the first quarter, the iPad owned a 58% share of the market.

Apple's 70% share was its best showing in iSuppli's tracking since the first quarter of 2011.

in the second quarter, with the 17 million sold, representing an 84% increase over the same quarter of 2011.

"Apple is making all the right moves to rebuild its dominant position in the tablet space," said Rhoda Alexander, iSuppli's director of tablet and monitor research, in an emailed statement. "With the expected entrance of the 7-inch version of the iPad in September, Apple is sending a clear message that it plans to dominate this market over the long term."

All told, Apple has sold approximately 85 million iPads since the tablet's April 2010 introduction.