John G Eckhardt

Title: John G. Eckhardt and Write-Once Magneto-Optic Storage

Introduction

John G. Eckhardt is an inventor associated with Morgan Hill, California, and International Business Machines Corporation. His patent work concerns magneto-optic data storage designed to be recorded only once. Eckhardt is credited with 1 patent in the information provided.

Latest Patents

Eckhardt’s listed patent is “Write Once Magneto-Optic Media and System.” It describes an optical storage medium with data and reference layers deposited on a substrate. The data layer uses a transition-metal-rich rare-earth–transition-metal material and has a destruction temperature above its Curie temperature. The reference layer uses a transition-metal-poor rare-earth–transition-metal material, with a Curie temperature above the data layer’s destruction temperature. This arrangement enables a medium that can be recorded only once.

Career Highlights

Eckhardt’s listed invention reflects work on optical data storage and material properties that control recording behavior. The patent is associated with International Business Machines Corporation, commonly known as IBM.

Collaborations

The provided information names Chien-Jung F. Lin and James Carr Suits among Eckhardt’s coworkers. Their inclusion indicates professional connections, though the available details do not specify their roles in the patent.

Conclusion

John G. Eckhardt’s listed patent documents a write-once magneto-optic storage design developed in connection with IBM, highlighting an approach to controlling optical data recording through layered materials.