Sten Helmfrid

Follow

Person

Musashino, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Short-wavelength laser light source
- Patent number 5,854,870
- Issue date Dec 29, 1998
- Hitachi, Ltd.
- Sten Helmfrid
- G02 - OPTICS
Information Patent Grant
Solid-state laser device including uniaxial laser crystal emitting...
- Patent number 5,377,212
- Issue date Dec 27, 1994
- Hitachi, Ltd.
- Kimio Tatsuno
- G11 - INFORMATION STORAGE