4. Optical: systems and elements
  5. Absorption filter
  6. Neutral or graded density

Hideharu Okami

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Absorption type multi-layer film ND filter

Optical: systems and elements – Absorption filter – Neutral or graded density
Reexamination Certificate

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Absorption type multi-layer film ND filter

Stock material or miscellaneous articles – Composite – Of inorganic material
Reexamination Certificate

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Absorption type multi-layer film ND filter

Stock material or miscellaneous articles – Composite – Of inorganic material
Reexamination Certificate

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Absorption type multi-layer film ND filter and process for...

Optical: systems and elements – Absorption filter – Neutral or graded density
Reexamination Certificate

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Bidirectional optical module

Optical waveguides – Directional optical modulation within an optical waveguide
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Profile ID: LFUS-PAI-P-2206378

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