4. Optical waveguides
  5. Optical fiber waveguide with cladding

Yukio Koumura

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Optical fiber base material, its manufacturing method and...

Optical waveguides – Optical fiber waveguide with cladding – Utilizing multiple core or cladding
Reexamination Certificate

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Optical fiber preform

Optical waveguides – Optical fiber waveguide with cladding
Reexamination Certificate

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Optical fiber preform and the method of producing the same

Plastic and nonmetallic article shaping or treating: processes – Optical article shaping or treating – Optical fiber – waveguide – or preform
Reexamination Certificate

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Optical fiber preform and the method of producing the same

Stock material or miscellaneous articles – Article of intermediate shape
Reexamination Certificate

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