Joseph Piper, president of Integra Bio-Health in Boulder, and his wife, Lisa, are thanking CU-BoulderÂ’s Center for Entrepreneurship by giving it a 5 percent interest in the future earnings of the new venture funds general partner interest. Piper, who will finish the MBA program in entrepreneurship and finance at the College of Business in May, recently started the company with his partners and classmates Thomas Bleyer, Theresa Jamerson and Hans Lundin.