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US4305778A
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Hydrothermal process for growing a single crystal with an aqueous mineralizer
Assignee: EIDP Inc
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Filing: 1979-10-30
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Granted: 1981-12-15
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Expires: 1999-10-30
Abstract
Abstract Stable glass whose composition is defined by the quadrilaterals I II III IV of the accompanying ternary diagrams of FIGS. 1 and 2 for the system selected from the group consisting of K2O/P2O5/(TiO2)2, Rb2O/P2O5/(TiO2)2, K2O/As2O5/(TiO2)2 and Rb2O/As2O5/(TiO2)2; and the use of such glass in hydrothermal processes for producing crystals of KTiOPO4 and certain crystal analogues thereof, namely, RbTiOPO4, KTiOAsO4 and RbTiOAsO4.
Inventors
- 👤 Thurman E. Gier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:14
CPC Classifications
C; C30; C30B; C30B7/00; C30B7/10; C30B29/00; C30B29/10; C30B29/14
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
141 words
Improved hydrothermal process for growing a crystal of KTiOPO 4 , RbTiOPO 4 , KTiOAsO 4 or RbTiOAsO 4 by employing in the process at least one seed growth crystal thereof, an aqueous mineralizer solution and KTiOPO 4 , RbTiOPO 4 , KTiOAsO 4 or RbTiOAsO 4 growth nutrient, the improvement characterized in that the mineralizer is comprised, at least in part, of the stable glass whose composition is defined by the quadrilaterals I II III IV of the ternary diagrams of FIGS. 1 and 2, said glass being of the system, corresponding to the aforesaid crystal, K 2 O/P 2 O 5 /(TiO 2 ) 2 , Rb 2 O/P 2 O 5 /(TiO 2 ) 2 , K 2 O/As 2 O 5 /(TiO 2 ) 2 or Rb 2 O/As 2 O 5 /(TiO 2 ) 2 .
Claim 2
Dependent Claim
141 words
Improved hydrothermal process for growing a crystal of KTiOPO 4 , RbTiOPO 4 , KTiOAsO 4 or RbTiOAsO 4 by employing in the process at least one seed growth crystal thereof, an aqueous mineralizer solution and KTiOPO 4 , RbTiOPO 4 , KTiOAsO 4 or RbTiOAsO 4 growth nutrient, the improvement characterized in that the mineralizer is comprised, at least in part, of the stable glass whose composition is defined by the quadrilaterals I II III IV of the ternary diagrams of FIGS. 1 and 2, said glass being of the system, corresponding to the aforesaid crystal, K 2 O/P 2 O 5 /(TiO 2 ) 2 , Rb 2 O/P 2 O 5 /(TiO 2 ) 2 , K 2 O/As 2 O 5 /(TiO 2 ) 2 or Rb 2 O/As 2 O 5 /(TiO 2 ) 2 .
Claim 3
Dependent Claim
53 words
Process of claim 1 wherein the crystal being grown is KTiOPO 4 , the growth nutrient is KTiOPO 4 and the glass is of the system K 2 O/P 2 O 5 /(TiO 2 ) 2 and is defined by the quadrilateral I II III IV of the ternary diagram of FIG. 1.
Claim 4
Dependent Claim
19 words
Process of claim 2 wherein the glass is of the composition defined by the polygon ABCDEFG of FIG. 1.
Claim 5
Dependent Claim
41 words
Process of claim 3 wherein the glass is of the composition 55-60 mole % K 2 O, 38-42 mole % P 2 O 5 and 1-5 mole % (TiO 2 ) 2 , with the total thereof being 100 mole %.
Claim 6
Dependent Claim
15 words
Process of claim 3 wherein the K/P mole ratio in the glass is about 0.8-2.5.
Claim 7
Dependent Claim
53 words
Process of claim 1 wherein the crystal being grown is RbTiOPO 4 , the growth nutrient is RbTiOPO 4 and the glass is of the system Rb 2 O/P 2 O 5 /(TiO 2 ) 2 and is defined by the quadrilateral I II III IV of the ternary diagram of FIG. 1.
Claim 8
Dependent Claim
49 words
Process of claim 1 wherein the crystal being grown is KTiOAsO 4 , the growth nutrient is KTiOAsO 4 and the glass is of the system K 2 O/As 2 O 5 /(TiO 2 ) 2 and is defined by the quadrilateral I II III IV of FIG. 2.
Claim 9
Dependent Claim
49 words
Process of claim 1 wherein the crystal being grown is RbTiOAsO 4 , the growth nutrient is RbTiOAsO 4 and the glass is of the system Rb 2 O/As 2 O 5 /(TiO 2 ) 2 and is defined by the quadrilateral I II III IV of FIG. 2.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-12-14 | 1985-06-15 | 1985-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-12-14 | 1989-06-15 | 1989-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-12-14 | 1993-06-15 | 1993-12-15 | $7700.00 | Window Closed / Lapsed |