US2675303A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for growing single crystals of quartz
Assignee: Clevite Corp
•
Filing: 1950-04-11
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Granted: 1954-04-13
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Expires: 1970-04-11
Abstract
No abstract record available.
Inventors
- 👤 Andrew R Sobek
- 👤 Danforth R Hale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:16
CPC Classifications
C; C01; C01B; C01B33/00; C01B33/113; C01B33/12; Y; Y10; Y10T; Y10T117/00; Y10T117/10; Y10T117/1024; Y10T117/1096
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
THE PROCESS FOR GROWING SINGLE CRYSTALS OF QUARTZ, COMPRISING: DISPOSING AT LEAST ONE QUARTZ CRYSTAL SEED IN ONE REGION OF A PRESSURE VESSEL AND A SILICEOUS SUPPLY MATERIAL IN ANOTHER REGION OF SAID VESSEL COMMUNICATING THROUGH CONSTRICTED CHANNELS WITH SAID ONE REGION AND PLACING A SOLVENT FLUID IN SAID VESSEL; APPLYING HEAT TO MAINTAIN SAID FLUID UNDER ELEVATED TEMPERATURE AND PRESSURE CONDITIONS IN SAID ONE REGION AND UNDER STILL HIGHER TEMPERATURE CONDITIONS IN SAID OTHER REGION; AND MOVING SAID VESSEL TO EFFECT TRANSFER OF SAID FLUID FROM EACH OF SAID REGIONS TO THE OTHER THEREOF THROUGH SAID CHANNELS AND TO EFFECT DISPERSAL WITHIN SAID FIRST-MENTIONED ONE REGION OF THE FLUID SO TRANSFERRED THERETO, WHEREBY SILICA IS DISSOLVED FROM SAID SUPPLY MATERIAL BY SAID FLUID AND QUARTZ IS DEPOSITED THEREFROM ON SAID SEED.
Claim 2
Dependent Claim
125 words
APPARATUS FOR GROWING SINGLE CRYSTALS OF QUARTZ, COMPRISING: A PRESSURE VESSEL INCLUDING A SILICA-DISSOLVING REGION FOR RECEIVING A SUPPLY MATERIAL OF CRYSTALLINE QUARTZ AND INCLUDING A QUARTZ-GROWING REGION ARRANGED TO HOLD AT LEAST ONE QUARTZ CRYSTAL SEED SO THAT THERE MAY BE DISPOSED IN SAID VESSEL A FLUID FOR DISSOLVING THEREIN SILICA FROM SAID SUPPLY MATERIAL AND FOR DEPOSITING THEREFROM QUARTZ ON SAID SEED; CONSTRICTED CHANNEL MEANS IN SAID VESSEL COMMUNICATING BETWEEN SAID SILICA-DISSOLVING REGION AND SAID QUARTZ-GROWING REGION; AND MEANS FOR MAINTAINING SAID FLUID UNDER ELEVATED TEMPERATURE AND PRESSURE CONDITIONS IN SAID QUARTZ-GROWING REGION AND UNDER STILL HIGHER TEMPERATURE CONDITIONS IN SAID SILICA-DISSOLVING REGION AND FOR EFFECTING TRANSFER OF SAID FLUID FROM EACH OF SAID REGIONS TO THE OTHER THEREOF THROUGH SAID CHANNEL MEANS.
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) | 1957-04-12 | 1957-10-12 | 1958-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-12 | 1961-10-12 | 1962-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-12 | 1965-10-12 | 1966-04-13 | $7700.00 | Window Closed / Lapsed |