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(11)

2 016 856

(13)

C1

(51)

IPC

(21) (22)

Application

4953997/33, 1991-06-21

(22)

Actual filing date

1991-06-21

(45)

Published

1994-07-30

(72)

Inventor

Shchavelev O.S.Golovin A.I.

(73)

Holder

Nauchno-Issledovatel'Skij I Tekhnologicheskij Institut Opticheskogo Materialovedenija Goi"

GLASS Russian patent published in 1994 - IPC

Abstract RU 2016856 C1

FIELD: glass industry. SUBSTANCE: glass has, %: silicon oxide (SiO2) 26-43; germanium oxide (GeO2) 13-22; zirconium oxide (ZrO2) 13-17; barium oxide (BaO) 17-32; sodium oxide (Na2O) 0.5-7.5, and potassium oxide (K2O) 1.0-6.6. Properties: making temperature is 1400-1450 C, softening point is 730-850 C. Glass is used in optical equipments. EFFECT: enhanced quality of glass. 1 tbl

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RU 2 016 856 C1

Authors

Shchavelev O.S.

Golovin A.I.

Dates

1994-07-30—Published

1991-06-21—Filed

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