Corning Product Development Engineer interview questions

First the individual 1:1 phone interview. After that I was asked to come in for an onsite interview which consisted of a 30 min presentation in front of who could potentially be colleagues followed by 10-15 min of questioning. After the presentation I had several 1:1 interviews with the hiring manager, process engineers directors, and possible colleagues. Afterthe interview I waited approximately two weeks for a non-formal offer and a formal offer within that week.