Techniques he's developed are used far and wide throughout the medical and pharmaceutical field, but Dr. Langer's not a medical doctor. He's a chemical engineer.
A team of engineers and chemists have found a way to transform an ordinary house brick into a pseudo-battery-allowing it to conduct and store electricity.
The fact that we know Tapputi developed her own chemical methods, and used equipment like a still, in 1200 BCE makes her the first recorded chemical engineer.