How was Standard Oil formed? Who was involved in this venture?

John D. Rockefeller bought out his partner in a refinery. He spent some time perfecting his process and learning everything he could about the process. In 1867, he joined with Henry Flagler to form Standard Oil. It was a joint stock company that sought to consolidate refineries. By 1879, Standard Oil held about 90 percent of refining capacity in the United States.