JH

John S. Hartman

OD Optical Data: 2 patents #6 of 16Top 40%
Overall (All Time): #2,321,269 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
4896314 Bump-forming media including thin intermediate reflective layer and methods for writing, reading, and erasing same W. Eugene Skiens, Michael A. Lind, John W. Swanson, Nancy Iwamoto 1990-01-23
4825430 Erasable optical data storage medium having an embedded servo track and a subsurface recording interface Joseph M. Halter, Michael A. Lind, W. Eugene Skiens, John W. Swanson, Jonathan R. Biles 1989-04-25