Plastic and nonmetallic article shaping or treating: processes – Outside of mold sintering or vitrifying of shaped inorganic... – Including plural heating steps
Patent
1974-08-13
1976-12-28
Schmidt, William H.
Plastic and nonmetallic article shaping or treating: processes
Outside of mold sintering or vitrifying of shaped inorganic...
Including plural heating steps
264 1, 264129, 350 96M, 427 44, 427 54, 427163, 427164, 427340, 427377, 427385B, 427407R, 427430R, 428378, 428394, G02B 514, B29D 1100, B05D 506, B32B 2702
Patent
active
039998347
ABSTRACT:
Light-focussing type optical fibers are formed from concentric circular sheath-core composite fibers composed of a sheath forming polymer having a defined solubility parameter and a defined swelling parameter, which can protect the core, and a core polymer wherein a specific monomer is introduced through the sheath into the core polymer, after which said monomer is polymerized, whereby the defined variation of refractive index from the center of the core towards the periphery of the core is formed.
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patent: 3472921 (1969-10-01), Fyfe
patent: 3485556 (1969-12-01), Naujokas
patent: 3639035 (1972-01-01), Irie
patent: 3641332 (1972-02-01), Reich et al.
patent: 3785718 (1974-01-01), Gloge
patent: 3801181 (1974-04-01), Kitono et al.
patent: 3816160 (1974-06-01), Moore
patent: 3819782 (1974-06-01), Irie
patent: 3823997 (1974-07-01), Gloge
"Light-Focusing Plastic Rod..." in Applied Physics Letters, vol. 23(5), pp. 247-248, 1973.
Ohtomo Koichiro
Yata Shizukuni
Kanebo Ltd.
Schmidt William H.
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