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US3615764A
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Arsenic pentoxide glass compositions
Assignee: JENAER GLASWERK SCHOTT S GEN
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Filing: 1969-03-24
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Granted: 1971-10-26
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Expires: 1989-03-24
Abstract
Abstract Optical glass compositions comprising 8 to 60 percent by weight arsenic pentoxide and 40 to 92 percent by weight simple and/or complex inorganic fluorides.
Inventors
- 👤 Georg Krolla
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:15
CPC Classifications
C; C03; C03C; C03C3/00; C03C3/12; C03C3/23; C03C3/247; Y; Y10; Y10S; Y10S501/00; Y10S501/90; Y10S501/903; Y10S501/906
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
21 words
Optical glass compositions according to claim 1 wherein said inorganic fluorides are fluorides of elements having valence of at least 2.
Claim 2
Dependent Claim
40 words
Optical glass compositions according to claim 1 wherein said fluoride includes fluorides of aluminum or of the alkaline earth metals and wherein said fluoride of aluminum or alkaline earth metal constitute 30 to 92 percent by weight of said composition.
Claim 3
Dependent Claim
18 words
Optical glass compositions according to claim 3 containing 30 to 75 percent by weight of alkaline earth fluorides.
Claim 4
Dependent Claim
27 words
Optical glass compositions according to claim 3 containing at least 2 percent by weight of AlF3 and at least 15 percent by weight of alkaline earth fluorides.
Claim 5
Dependent Claim
15 words
Optical glass compositions according to claim 3 containing 5 to 35 percent by weight AlF3.
Claim 6
Dependent Claim
15 words
Optical glass compositions according to claim 1 containing 35 percent by weight of lead fluoride.
Claim 7
Dependent Claim
54 words
Optical glass compositions according to claim 1 wherein said fluorides are members of the group of simple fluorides of members selected from the group consisting of zinc, cadmium, bismuth, the rare earths, yttrium and thorium and complex fluorides of members selected from the group consisting of titanium, zirconium, niobium, tantalum, silicon, boron and tungsten.
Claim 8
Dependent Claim
21 words
Optical glass compositions according to claim 1 additionally containing up to 5 percent by weight of at least one metallic oxide.
Claim 9
Dependent Claim
34 words
Optical glass compositions according to claim 1 comprising: 20.0 parts by weight As2O5, 30.0 parts by weight AlF3, 30.0 parts by weight CaF2, 17.0 parts by weight BaF2 and 3.0 parts by weight MgF2.
Claim 10
Dependent Claim
34 words
Optical glass compositions according to claim 1 comprising: 35.0 parts by weight As2O5, 7.5 parts by weight AlF3, 7.5 parts by weight CaF2, 47.0 parts by weight BaF2 and 3.0 parts by weight MgF2.
Claim 11
Dependent Claim
28 words
Optical glass compositions according to claim 1 comprising: 50.0 parts by weight As2O5, 12.5 parts by weight AlF3, 12.5 parts by weight CaF2, 25.0 parts by weight BaF2.
Claim 12
Dependent Claim
24 words
Optical glass compositions according to claim 1 comprising: 45.0 parts by weight As2O5, 10.0 parts by weight AlF3 and 45.0 parts by weight BaF2.
Claim 13
Dependent Claim
29 words
Optical glass compositions according to claim 1 comprising: 39.0 parts by weight As205, 14.0 parts by weight AlF3, 7.0 parts by weight CaF2 and 40.0 parts by weight BaF2.
Claim 14
Dependent Claim
34 words
Optical glass compositions according to claim 1 comprising: 25.0 parts by weight As2O5, 20.0 parts by weight AlF3, 20.0 parts by weight CaF2, 5.0 parts by weight BaF2 and 30.0 parts by weight PbF2.
Claim 15
Dependent Claim
39 words
Optical glass compositions according to claim 1 comprising: 25.0 parts by weight As2O5, 20.0 parts by weight AlF3, 20.0 parts by weight CaF2, 5.0 parts by weight BaF2, 25.0 parts by weight PbF2 and 5.0 parts by weight K2Tif6.
Claim 16
Dependent Claim
39 words
Optical glass compositions according to claim 1 comprising: 25.0 parts by weight As2O5, 20.0 parts by weight AlF3, 20.0 parts by weight CaF2, 12.5 parts by weight BaF2, 10.0 parts by weight PbF2 and 12.5 parts by weight BaSiF6.
Claim 17
Dependent Claim
34 words
Optical glass compositions according to claim 1 comprising: 21.5 parts by weight As2O5, 3.5 parts by weight AlF3, 3.5 parts by weight CaF2, 43.0 parts by weight BaF2 and 28.5 parts by weight ThF4.
Claim 18
Dependent Claim
34 words
Optical glass compositions according to claim 1 comprising: 25.0 parts by weight As2O5, 25.0 parts by weight AlF3, 25.0 parts by weight CaF2, 20.0 parts by weight BaF2 and 5.0 parts by weight ZnF2.
Claim 19
Dependent Claim
34 words
Optical glass compositions according to claim 1 comprising: 25.0 parts by weight As2O5, 25.0 partS by weight AlF3, 25.0 parts by weight CaF2, 22.0 parts by weight BaF2 and 3.0 parts by weight YF3.
Claim 20
Dependent Claim
34 words
Optical glass compositions according to claim 1 comprising: 25.0 parts by weight As2O5, 25.0 parts by weight AlF3, 25.0 parts by weight CaF2, 20.0 parts by weight BaF2 and 5.0 parts by weight CdF2.
Claim 21
Dependent Claim
39 words
Optical glass compositions according to claim 1 comprising: 25.0 parts by weight As2O5, 20.0 parts by weight AlF3, 20.0 parts by weight CaF2, 7.5 parts by weight BaF2, 20.0 parts by weight PbF2 and 7.5 parts by weight LaF3.
Claim 22
Dependent Claim
29 words
Optical glass compositions according to claim 1 comprising: 30.0 parts by weight As2O5, 5.0 parts by weight AlF3, 5.0 parts by weight CaF2 and 60.0 parts by weight BaF2.
Claim 23
Dependent Claim
34 words
Optical glass compositions according to claim 1 comprising: 15.0 parts by weight As2O5, 27.5 parts by weight AlF3, 27.5 parts by weight CaF2, 15.0 parts by weight BaF3 and 15.0 parts by weight PbF2.
Claim 24
Dependent Claim
34 words
Optical glass compositions according to claim 1 comprising: 20.0 parts by weight As2O5, 30.0 parts by weight AlF3, 30.0 parts by weight CaF2, 15.0 parts by weight BaF2 and 5.0 parts by weight PbF2.
References Cited (Backward Citations)
US2255109A
Cited
US2477649A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-25 | 1975-04-26 | 1975-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-25 | 1979-04-26 | 1979-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-25 | 1983-04-26 | 1983-10-26 | $7700.00 | Window Closed / Lapsed |