Stock material or miscellaneous articles – Composite – Of bituminous or tarry residue
Patent
1976-08-11
1979-08-28
Corbin, John K.
Stock material or miscellaneous articles
Composite
Of bituminous or tarry residue
65 3A, 350 9630, 428375, G02B 514, C03C 2502
Patent
active
041659155
ABSTRACT:
A semiproduct for use in the manufacture of light conducting fibers comprising a core of synthetic quartz glass having a thickness of 6 to 400 mm, the quartz glass containing less than 10 ppm hydroxyl ions and having, in the near infrared spectral range, an optical loss totaling less than 4 dB/km, measured in the mass, the core being fused with a jacket having a wall thickness of 2 to 20 mm and consisting essentially of synthetic quartz glass containing more than 4,000 ppm of fluorine, the jacket having a length of at least 200 mm; a method of producing the same and light conducting fibers derived therefrom.
REFERENCES:
patent: 3784386 (1974-01-01), Araujo et al.
patent: 3856494 (1974-12-01), Kitano et al.
patent: 3869194 (1975-03-01), Shiraishi et al.
patent: 3884550 (1975-05-01), Maurer et al.
patent: 3933454 (1976-01-01), DeLuca
patent: 4082420 (1978-04-01), Shiraishi et al.
Muhlich Albert
Rau Karlheinz
Simmat Fritz
Treber Norbert
Corbin John K.
Heraeus Quarzschmelze GmbH
Levy Stewart
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