Duluth entrepreneur finding a market in temperature control

Duluth entrepreneur finding a market in temperature control

A Duluth entrepreneur with a few patents, funded by a few Instagram accounts, intends to revolutionize shipping, medicine, food and even insurance.

"We're just learning so many different aspects of what this could potentially be used for," said Nathan Lipinski, CEO of MC Cubed. "The application is growing faster than I can even comprehend."

Sharks fawn for Freezer Friend at UMD event

Sharks fawn for Freezer Friend at UMD event

What could one day be a ubiquitous product in freezers across the land got its first vote of confidence on a stage at the University of Minnesota Duluth on Monday.

Nathan Lipinski won the school's second annual Shark Tank Entrepreneurship Competition — and its $1,500 top prize — with his Freezer Friend invention, a simple indicator meant to warn users if a freezer has malfunctioned.

"It's a super-easy, cost-effective solution to a major problem," Lipinski said to the five judges and the few dozen students, faculty and others in the audience.