Compositions: ceramic – Ceramic compositions – Glass compositions – compositions containing glass other than...
Patent
1980-09-18
1982-11-09
Bell, Mark
Compositions: ceramic
Ceramic compositions
Glass compositions, compositions containing glass other than...
501 44, 501 73, C03C 300
Patent
active
043585434
ABSTRACT:
A fluoride glass basically containing ingredients of a P-Si-Al-alkaline-earth metals-alkali metals-F system within specific content ranges has extremely high anomalous partial dispersion and low dispersion properties and is stable without tendency to devitrification.
REFERENCES:
patent: 2578325 (1951-12-01), Sun et al.
patent: 3847624 (1974-11-01), Broemer et al.
patent: 4040846 (1977-08-01), Broemer et al.
patent: 4142986 (1979-03-01), Rapp
Bell Mark
Kabushika Kaisha Ohara Kogaku Garasu Seizosho
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