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US3979322A Expired / Lapsed US ⏱️ 0.0 years remaining

Phosphate glass for laser use

Assignee: Individual
•
Filing: 1973-04-09
•
Granted: 1976-09-07
•
Expires: 1993-04-09
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Abstract

Abstract Glass for laser use, comprising the oxides of the following elements having the following mol percentage composition: ______________________________________ phosphorus pentoxide 35-49; oxides of one or more alkali metals 1-30; oxides of one or more metals of group II 20-45; oxides of one or more rare-earth elements 0.1-25; oxides of one or more of B, Al, Nb, Pb 0-27; ______________________________________ Wherein the ratio of the sum total of the oxides of mono-, bi- and trivalent metals to the phosphorus pentoxide exceeds unity.

Inventors

  • 👤 Nikolai Efimovich Alexeev
  • 👤 Igor Mikhailovich Buzhinsky
  • 👤 Mark Efremovich Zhabotinsky
  • 👤 Anatoly Andreevich Izyneev
  • 👤 Elizaveta Ivanovna Koryagina
  • 👤 Valery Borisovich Kravchenko
  • 👤 Jury Petrovich Rudnitsky
  • 👤 Valentin Pavlovich Gapontsev
  • 👤 Vadim Vasilievich Tsapkin

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-25 13:28
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/14; H01S3/16; H01S3/17; C; C03; C03C; C03C3/00; C03C3/12; C03C3/16; C03C3/17; C03C3/19; C03C4/00; C03C4/0071

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 105 words
A glass for laser use having the following mol percentage composition: phosphorus pentoxide -- 35-49; oxides of one or more alkali metals -- 1-30; oxides of one or more metals of group II -- 20-45; neodymium oxide -- 0.1-25; oxides of elements selected from the group consisting of B, Al, Nb and Pb -- 0-27; the ratio of the sum total of the oxides of mono-, bi- and trivalent metals to the phosphorus pentoxide being in excess of unity, said glass having a thermal refractive index coefficient of (-30 to + 20) . 10.sup. -7 deg.sup. -1 and a cross-sectional area of stimulated radiation of
Claim 2
Dependent Claim 105 words
A glass for laser use having the following mol percentage composition: phosphorus pentoxide -- 35-49; oxides of one or more alkali metals -- 1-30; oxides of one or more metals of group II -- 20-45; neodymium oxide -- 0.1-25; oxides of elements selected from the group consisting of B, Al, Nb and Pb -- 0-27; the ratio of the sum total of the oxides of mono-, bi- and trivalent metals to the phosphorus pentoxide being in excess of unity, said glass having a thermal refractive index coefficient of (-30 to + 20) . 10.sup. -7 deg.sup. -1 and a cross-sectional area of stimulated radiation of
Claim 3
Dependent Claim 29 words
A glass as claimed in claim 1, also doped with the oxides of metals selected from the group consisting of ZrO 2 and Cr 2 O 3 in an
Claim 4
Dependent Claim 32 words
A glass as claimed in claim 1, comprising the following components (in mol percent): ______________________________________ P.sub.2 O.sub.5 38-49 BaO 10-30 CdO 5-35 K.sub.2 O 5-25 Al.sub.2 O.sub.3 1-10 Nd.sub.2 O.sub.3 0.5-5. ______________________________________
Claim 5
Dependent Claim 32 words
A glass as claimed in claim 1, comprising the following components (in mol percent): ______________________________________ P.sub.2 O.sub.5 39-49 BaO 5-35 ZnO 10-30 B.sub.2 O.sub.3 0-10 Nd.sub.2 O.sub.3 0.5-6 Na.sub.2 O 1-5. ______________________________________
Claim 6
Dependent Claim 14 words
A glass according to claim 1 which has said area in the range of
Claim 7
Dependent Claim 21 words
A glass according to claim 1 which has a thermal expansion coefficient of 120.10.sup. -7 to 170.10.sup. -7 deg.sup. -1 .

References Cited (Backward Citations)

US2996391A Cited
US2920972A Cited
US3068108A Cited
US3455707A Cited
US3250721A Cited
US3328181A Cited
US3469729A Cited
US3580859A Cited
FR2003759A1 Cited
US3663474A Cited
US3549554A Cited
US3846142A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1979-09-07 1980-03-08 1980-09-07 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1983-09-07 1984-03-08 1984-09-07 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1987-09-07 1988-03-08 1988-09-07 $7700.00 Window Closed / Lapsed

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