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US4075120A Expired / Lapsed US ⏱️ 0.0 years remaining

Laser phosphate glass compositions

Assignee: Darby Bank and Trust Co
•
Filing: 1975-05-14
•
Granted: 1978-02-21
•
Expires: 1995-05-14
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Abstract

Abstract Laser phosphate glass compositions are provided by combining constituent elements at defined amounts to form compositions which provide a balance of properties to the glass, especially high gain and low n 2 .

Inventors

  • 👤 John D. Myers
  • 👤 Charles S. Vollers

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-25 18:10
CPC Classifications
C; C03; C03C; C03C4/00; C03C4/0071; C03C3/00; C03C3/12; C03C3/16; C03C3/17

Claims Analysis

Total Claims: 18
Claim 1
Independent Claim 177 words
A laser glass comprising the following ingredients in mole percentages: ______________________________________ Ingredient Mole Percent ______________________________________ P.sub.2 O.sub.5 35 to 65 R.sub.2 O.sub.3 0.01 to 15 RO 5 to 30 R.sub.2 O 5 to 40 Nd.sub.2 O.sub.3 0.01 to 7 ______________________________________ wherein R 2 O 3 is selected from the group consisting of Al 2 O 3 , La 2 O 3 , Y 2 O 3 , Tm 2 O 3 , B 2 O 3 , Er 2 O 3 and mixtures thereof, wherein RO is selected from the alkaline earth oxide group consisting of BaO, BeO, MgO, SrO, CaO and mixtures thereof, wherein R 2 O is selected from the alkali metal oxide group consisting of Li 2 O, K 2 O, Na 2 O, Rb 2 O, and mixtures thereof and wherein a solarization inhibiting oxide is present in an amount sufficient to prevent discoloration, and wherein said solarization inhibiting oxide is selected from the group consisting of TiO 2 , Sb 2 O 3 , CeO 2 , SiO 2 and mixtures thereof.
Claim 2
Dependent Claim 177 words
A laser glass comprising the following ingredients in mole percentages: ______________________________________ Ingredient Mole Percent ______________________________________ P.sub.2 O.sub.5 35 to 65 R.sub.2 O.sub.3 0.01 to 15 RO 5 to 30 R.sub.2 O 5 to 40 Nd.sub.2 O.sub.3 0.01 to 7 ______________________________________ wherein R 2 O 3 is selected from the group consisting of Al 2 O 3 , La 2 O 3 , Y 2 O 3 , Tm 2 O 3 , B 2 O 3 , Er 2 O 3 and mixtures thereof, wherein RO is selected from the alkaline earth oxide group consisting of BaO, BeO, MgO, SrO, CaO and mixtures thereof, wherein R 2 O is selected from the alkali metal oxide group consisting of Li 2 O, K 2 O, Na 2 O, Rb 2 O, and mixtures thereof and wherein a solarization inhibiting oxide is present in an amount sufficient to prevent discoloration, and wherein said solarization inhibiting oxide is selected from the group consisting of TiO 2 , Sb 2 O 3 , CeO 2 , SiO 2 and mixtures thereof.
Claim 3
Dependent Claim 46 words
The laser glass as defined in claim 1, wherein the following ingredients are in mole percentages: ______________________________________ Ingredient Mole Percent ______________________________________ P.sub.2 O.sub.5 40 - 55 R.sub.2 O.sub.3 0.1 - 10 RO 7 - 25 R.sub.2 O 20 - 35 Nd.sub.2 O.sub.3 0.1 - 3.0 ______________________________________
Claim 4
Dependent Claim 17 words
The laser glass as defined in claim 1, wherein said solarization inhibiting oxide is SiO 2 .
Claim 5
Dependent Claim 25 words
The laser glass as defined in claim 1, wherein the glass is in the form of rods and wherein said rods possess good optical qualities.
Claim 6
Dependent Claim 25 words
The laser glass as defined in claim 1, wherein the glass is in the form of disks and wherein said disks possess good optical qualities.
Claim 7
Dependent Claim 25 words
The laser glass as defined in claim 1, wherein the glass is in the form of plates and wherein said plates possess good optical qualities.
Claim 8
Dependent Claim 25 words
The laser glass as defined in claim 1, wherein the glass is in the form of fibers and wherein said fibers possess good optical qualities.
Claim 9
Dependent Claim 30 words
A laser glass comprising the following ingredients in mole percentages: ______________________________________ Ingredient Mole Percent ______________________________________ P.sub.2 O.sub.5 55.0 Li.sub.2 O 30.0 CaO 10.0 Al.sub.2 O.sub.3 4.3 Nd.sub.2 O.sub.3 0.7 ______________________________________
Claim 10
Dependent Claim 30 words
A laser glass comprising the following ingredients in mole percentages: ______________________________________ Ingredient Mole Percent ______________________________________ P.sub.2 O.sub.5 55.0 Li.sub.2 O 30.0 CaO 10.0 Al.sub.2 O.sub.3 4.3 Nd.sub.2 O.sub.3 0.7 ______________________________________
Claim 11
Dependent Claim 30 words
A laser glass comprising the following ingredients in mole percentages: ______________________________________ Ingredient Mole Percent ______________________________________ P.sub.2 O.sub.5 50.0 K.sub.2 O 30.0 BaO 15.0 Al.sub.2 O.sub.3 4.3 Nd.sub.2 O.sub.3 0.7 ______________________________________
Claim 12
Dependent Claim 30 words
A laser glass comprising the following ingredients in mole percentages: ______________________________________ Ingredient Mole Percent ______________________________________ P.sub.2 O.sub.5 50.0 K.sub.2 O 30.0 BaO 15.0 Al.sub.2 O.sub.3 4.3 Nd.sub.2 O.sub.3 0.7 ______________________________________
Claim 13
Dependent Claim 30 words
A laser glass comprising the following ingredients in mole percentages: ______________________________________ Ingredient Mole Percent ______________________________________ P.sub.2 O.sub.5 50.0 K.sub.2 O 31.5 MgO 15.0 Al.sub.2 O.sub.3 3.0 Nd.sub.2 O.sub.3 0.5 ______________________________________
Claim 14
Dependent Claim 30 words
A laser glass comprising the following ingredients in mole percentages: ______________________________________ Ingredient Mole Percent ______________________________________ P.sub.2 O.sub.5 50.0 K.sub.2 O 31.5 MgO 15.0 Al.sub.2 O.sub.3 3.0 Nd.sub.2 O.sub.3 0.5 ______________________________________
Claim 15
Dependent Claim 31 words
A laser glass comprising the following ingredients in mole percentages: ______________________________________ Ingredient Mole Percent ______________________________________ P.sub.2 O.sub.5 49.3 Li.sub.2 O 33.5 CaO 10.9 Al .sub.2 O.sub.3 5.0 Nd.sub.2 O.sub.3 1.3 ______________________________________
Claim 16
Dependent Claim 31 words
A laser glass comprising the following ingredients in mole percentages: ______________________________________ Ingredient Mole Percent ______________________________________ P.sub.2 O.sub.5 49.3 Li.sub.2 O 33.5 CaO 10.9 Al .sub.2 O.sub.3 5.0 Nd.sub.2 O.sub.3 1.3 ______________________________________
Claim 17
Dependent Claim 32 words
A laser glass comprising the following ingredients in mole percentages: ______________________________________ Ingredient Mole Percent ______________________________________ P.sub.2 O.sub.5 50.0 Li.sub.2 O 30.0 CaO 10.0 Al.sub.2 O.sub.3 4.3 Nd.sub.2 O.sub.3 0.7 SiO.sub.2 5.0 ______________________________________
Claim 18
Dependent Claim 32 words
A laser glass comprising the following ingredients in mole percentages: ______________________________________ Ingredient Mole Percent ______________________________________ P.sub.2 O.sub.5 50.0 Li.sub.2 O 30.0 CaO 10.0 Al.sub.2 O.sub.3 4.3 Nd.sub.2 O.sub.3 0.7 SiO.sub.2 5.0 ______________________________________

References Cited (Backward Citations)

US3457182A Cited
US3471409A Cited
US3549554A Cited
US3677960A Cited
US3846142A Cited
US3979322A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1981-02-20 1981-08-22 1982-02-21 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1985-02-20 1985-08-22 1986-02-21 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1989-02-20 1989-08-22 1990-02-21 $7700.00 Window Closed / Lapsed

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