Inventor

HELMFRID STEN

SE6 patents

⚠️ This page may combine multiple inventors who share the name “HELMFRID STEN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

HITACHI LTD

2 patents

US5377212ADec 27, 1994

Solid-state laser device including uniaxial laser crystal emitting linearly polarized fundamental wave and nonlinear optical crystal emitting linearly polarized harmonic wave

HITACHI LTD57 citations95

US5854870ADec 29, 1998

Short-wavelength laser light source

HITACHI LTD37 citations92

PROXIMION FIBER SYSTEMS AB

2 patents

US7260292B2Aug 21, 2007

Optical coupler

PROXIMION FIBER SYSTEMS AB3 citations59

US7076133B2Jul 11, 2006

Optical coupling

PROXIMION FIBER SYSTEMS AB2 citations59

PROXIMION FIBER SYSTEMS A B

1 patent

US7373046B2May 13, 2008

Optical add/drop multiplexers

PROXIMION FIBER SYSTEMS A B2 citations51

SAHLGREN BENGT

1 patent

US8218922B2Jul 10, 2012

Channelized dispersion compensation module

SAHLGREN BENGT1 citations43