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David R. Haas
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New York, NY, US
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last 30 patents
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Patent Grant
Smooth-wall polymeric channel and rib waveguides exhibiting low opt...
Patent number
5,143,577
Issue date
Sep 1, 1992
Hoechst Celanese Corporation
David Haas
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Formation of polymer channel waveguides by excimer laser ablation a...
Patent number
5,106,211
Issue date
Apr 21, 1992
Hoechst Celanese Corp.
Kophu Chiang
G02 - OPTICS
Information
Patent Grant
Polymeric waveguides with bidirectional poling for radiation phase-...
Patent number
5,061,028
Issue date
Oct 29, 1991
Hoechst Celanese Corporation
Garo Khanarian
G02 - OPTICS
Information
Patent Grant
Polarization-insensitive interferometric waveguide electrooptic mod...
Patent number
4,932,738
Issue date
Jun 12, 1990
Hoechst Celanese Corp.
David R. Haas
G02 - OPTICS
Information
Patent Grant
Polarization-insensitive linear waveguide electrooptic phase modulator
Patent number
4,932,737
Issue date
Jun 12, 1990
Hoechst Celanese Corp.
Hyun-Nam Yoon
G02 - OPTICS
Information
Patent Grant
Frequency doubling polymeric waveguide
Patent number
4,865,406
Issue date
Sep 12, 1989
Hoechst Celanese Corp.
Garo Khanarian
B82 - NANO-TECHNOLOGY