Coating processes – Electrical product produced – Integrated circuit – printed circuit – or circuit board
Patent
1977-08-29
1980-08-12
Fisher, Richard V.
Coating processes
Electrical product produced
Integrated circuit, printed circuit, or circuit board
65 3A, 65 18, 427163, 427167, 427231, 427237, 350 9631, C03B 3707, C03B 37075
Patent
active
042170273
ABSTRACT:
A preform for fabrication of a glass fiber optical transmission line is prepared by chemical reaction of vapor ingredients within a glass tube. Reaction, which may be between chlorides or hydrides of, for example, silicon and germanium with oxygen, occurs preferentially within a constantly traversing hot zone. Flow rates and temperature are sufficient to result in glass formation in the form of particulate matter on the inner surface of the tube. This particulate matter deposits on the tube and is fused with each passage of the hot zone. Continuous rotation of the tube during processing permits attainment of higher temperatures within the heated zone without distortion of the tube.
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patent: 3737293 (1973-06-01), Maurer
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patent: 3961926 (1976-06-01), Asam
Powell et al., Vapor Deposition, John Wiley and Sons, Inc., New York, 1966: pp. 11, 12; 149-153; 259-263; and 391-397.
Steinmaier et al., "Successive Growth of Si and SiO.sub.2 in Epitaxial Apparatus", J. El. Soc., vol. 111, 1964, pp. 206-209.
Kern et al., "Chemical Vapor Deposition of Silicate Glasses . . . ", J. El. Soc., vol. 117, 1970, pp. 562-568.
MacChesney et al., Preparation of Low Loss Optical Fibers Using Simultaneous Vapor Phase Deposition and Fusion", Tenth Int. Congress on Glass, pp. 6-40 to 6-45, Jul. 1974.
MacChesney John B.
O'Connor Paul B.
Bell Telephone Laboratories Incorporated
Dworetsky Samuel H.
Fisher Richard V.
Indig George S.
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