The object
Joe Lemay co-invented Rocketbook, a reusable notebook system that pairs erasable physical pages with app-based cloud capture. A patent names Lemay and co-founder Jake Epstein as inventors, while Lemay’s current professional profile documents ongoing founder activity after Rocketbook’s acquisition.
01
What Joe did
co-invented Rocketbook, a reusable notebook system pairing erasable pages with app-based scanning and cloud sharing
02
Why it matters
Rocketbook helped define the reusable smart-notebook category, moving handwritten notes into digital workflows without abandoning paper-like writing.
03
Living-status check
Lemay’s 2026 current LinkedIn profile shows active professional posts and identifies his ongoing Rocketbook affiliation.