Angel Invest Boston

Through the Angel Invest Boston Podcast we seek to learn more about the creation of world-changing startups. Boston’s unique concentration of academic talent and entrepreneurial culture offer bountiful opportunities for conversations with people who have funded and built innovative companies. By recounting engaging stories, angels and founders convey lessons they have learned. These narratives illustrate the rewards of helping founders commercialize transformative technologies. We hope you too will find our dialogues entertaining and instructive. I’m Sal Daher, host of the Angel Invest Boston Podcast. After immigrating to Boston as a child and attending Belmont High School, I studied engineering at MIT and Stanford. Decades of work in international finance followed. During that time, I invested in a handful of ventures founded by friends and acquaintances. Now, I’m a member of Walnut Ventures and MIT Angels and spend most of my time as an angel investor taking stakes in about a dozen startups per year.
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Angel Invest Boston



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Jul 5, 2017

Two brilliant scholarship kids became friends at Georgia Tech and went on to found a company that could change the world. This is the story of Matthew Stellmaker and Keith Hearon and of the good chemistry manifested in their friendship and in the creation of new polymers friendly to people and nature.

The idea came to Matthew when he was working at a large company that produces 50,000 tons of citrus waste per year. His friend Keith thought that he could do something interesting with the citrus rinds so Matthew got the company to fund the research into creating a use for this natural material.

These two young founders display remarkable self-knowledge and reveal discoveries in the art of founding companies that could help other founders, technical or not. It’s a valuable conversation that includes the following topics:

  • Keith Hearon Bio
  • Matthew Stellmaker Bio
  • Keith Hearon Views Himself as an Entrepreneur Who Uses Science to Commercialize Valuable Products – Inspired by Ken Gall, Founder & Inventor
  • How Keith & Mathew Became Friends
  • How to Find a Job in Architecture in a Down Market
  • Challenge of Langer Lab Further Energized Keith Hearon
  • How Poly6 Got Started
  • How Poly6 Zeroed in on its First Use Case
  • How Poly6 Zeroed in on its First Use Case
  • How Being Co-founders Changed Their Friendship
  • Should You Found a Company with Your Friend?
  • The Risks of Moonlighting
  • The Care & Feeding of Advisors – Busy People Generous with Their Time
  • Other Startups Matthew & Keith Admire

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