Patent US3861761A successfully refreshed from Google Patents.
US3156533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crystal growth apparatus
Assignee: Individual
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Filing: 1960-07-26
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Granted: 1964-11-10
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Expires: 1980-07-26
Abstract
No abstract record available.
Inventors
- 👤 Imber Oscar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:56
CPC Classifications
C; C30; C30B; C30B11/00; C30B11/04; C30B11/08; C30B11/10; Y; Y10; Y10S; Y10S117/00; Y10S117/90; Y10T; Y10T117/00; Y10T117/10; Y10T117/1024; Y10T117/1028
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
A CRYSTAL GROWTH APPARATUS COMPRISING: (A) A CHAMBER HAVING A VERTICAL AXIS, (B) A CONICAL CONTAINER HAVING AN OPEN UPPER BASE, SAID BASE BEING IN OPEN COMMUNICATION WITH SAID CHAMBER, AN INNER LATERAL SURFACE AND A SUITABLE OPENING AT THE APEX THEREOF, (C) SAID OPENING HAVING A DIMENSION APPROXIMATELY IN THE RANGE OF ABOUT 0.5 MM. TO ABOUT 1.1 MM. TO PERMIT GRAVITY FLOW UNDER A HYDROSTATIC HEAD, (D) MEANS ARRANGED ABOVE SAID CONTAINER FOR PERIODICALLY DISCHARGING ON SAID SURFACE, (E) HEATING MEANS PROVIDED AT THE PERIPHERY OF SAID CONTAINER, FOR MELTING THE POWDER CONTACTING SAID SURFACE, (F) A SUPPORT ROD BELOW SAID OPENING ADAPTED TO SUPPORT A CRYSTAL GROWTH ELEMENT THEREON, (G) SAID CONICAL CONTAINER, SAID MEANS FOR DISCHARGING POWDER AND SAID SUPPORT ROD BEING SUPPORTED IN SAID CHAMBER AND ARRANGED IN SUBSTANTIALLY COAXIAL RELATIONSHIP TO SAID AXIS, (H) MEANS COUPLED WITH SAID CHAMBER FOR MOVING SAID ROD DOWNWARDLY AWAY FROM SAID OPENING, AND (I) MEANS CONNECTED TO SAID CHAMBER FOR CIRCULATING AN INERT ATMOSPHERE THERETHROUGH.
Claim 2
Dependent Claim
167 words
A CRYSTAL GROWTH APPARATUS COMPRISING: (A) A CHAMBER HAVING A VERTICAL AXIS, (B) A CONICAL CONTAINER HAVING AN OPEN UPPER BASE, SAID BASE BEING IN OPEN COMMUNICATION WITH SAID CHAMBER, AN INNER LATERAL SURFACE AND A SUITABLE OPENING AT THE APEX THEREOF, (C) SAID OPENING HAVING A DIMENSION APPROXIMATELY IN THE RANGE OF ABOUT 0.5 MM. TO ABOUT 1.1 MM. TO PERMIT GRAVITY FLOW UNDER A HYDROSTATIC HEAD, (D) MEANS ARRANGED ABOVE SAID CONTAINER FOR PERIODICALLY DISCHARGING ON SAID SURFACE, (E) HEATING MEANS PROVIDED AT THE PERIPHERY OF SAID CONTAINER, FOR MELTING THE POWDER CONTACTING SAID SURFACE, (F) A SUPPORT ROD BELOW SAID OPENING ADAPTED TO SUPPORT A CRYSTAL GROWTH ELEMENT THEREON, (G) SAID CONICAL CONTAINER, SAID MEANS FOR DISCHARGING POWDER AND SAID SUPPORT ROD BEING SUPPORTED IN SAID CHAMBER AND ARRANGED IN SUBSTANTIALLY COAXIAL RELATIONSHIP TO SAID AXIS, (H) MEANS COUPLED WITH SAID CHAMBER FOR MOVING SAID ROD DOWNWARDLY AWAY FROM SAID OPENING, AND (I) MEANS CONNECTED TO SAID CHAMBER FOR CIRCULATING AN INERT ATMOSPHERE THERETHROUGH.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-11-10 | 1968-05-11 | 1968-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-10 | 1972-05-11 | 1972-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-10 | 1976-05-11 | 1976-11-10 | $7700.00 | Window Closed / Lapsed |