US3235339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for floating zone melting
Assignee: US Philips Corp
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Filing: 1962-12-17
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Granted: 1966-02-15
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Expires: 1982-12-17
Abstract
No abstract record available.
Inventors
- 👤 Brunet Michel
- 👤 Brunet Annie
- 👤 Deyris Emile
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:14
CPC Classifications
C; C30; C30B; C30B13/00; Y; Y10; Y10T; Y10T117/00; Y10T117/10; Y10T117/1024; Y10T117/1076
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
FLOATING ZONE MELTING APPARATUS FOR TREATING SEMICONDUCTIVE MATERIALS, COMPRISING UPPER AND LOWER, SPACED, ALIGNED HOLDERS ADAPTED TO HOLD AND SUPPORT OPPOSITE ENDS OF A BAR OF THE MATERIAL TO BE TREATED, A VESSEL CONNECTED TO THE HOLDERS AND ENCLOSING THE HOLDERS AND THE BAR, SAID VESSEL COMPRISING A LOWER, UPWARDLY-FACING CUP-SHAPED PORTION FOR HOLDING A LIQUID THEREIN AND FIXEDLY CONNECTED TO THE LOWER HOLDER AND AN UPPER, DOWNWARDLY-FACING CUPSHAPED PORTION WHOSE LOWERMOST END PORTION EXTENDS WITHIN THE LOWER CUP-SHAPED PORTION AND FIXEDLY CONNECTED TO THE UPPER HOLDER, SAID UPPER AND LOWER VESSEL PORTIONS BEING SYMMETRICAL ABOUT A COMMON VERTICAL AXIS, A SEALING LIQUID IN THE LOWER CUP-SHAPED PORTION AT A LEVEL AT WHICH THE LOWERMOST END-PORTION OF THE UPPER CUP-SHAPED PORTION IS IMMERSED IN THE LIQUID, SAID LIQUID ACTING TO SEAL OFF THE INTERIOR OF THE VESSEL WHILE ALLOWING RELATIVE MOVEMENT BETWEEN THE UPPER AND LOWER VESSEL PORTIONS, MEANS FOR ROTATING THE UPPER AND LOWER VESSEL PORTIONS RELATIVE TO ONE ANOTHER ABOUT THE COMMON VERTICAL AXIS, HEATING
Claim 2
Dependent Claim
167 words
FLOATING ZONE MELTING APPARATUS FOR TREATING SEMICONDUCTIVE MATERIALS, COMPRISING UPPER AND LOWER, SPACED, ALIGNED HOLDERS ADAPTED TO HOLD AND SUPPORT OPPOSITE ENDS OF A BAR OF THE MATERIAL TO BE TREATED, A VESSEL CONNECTED TO THE HOLDERS AND ENCLOSING THE HOLDERS AND THE BAR, SAID VESSEL COMPRISING A LOWER, UPWARDLY-FACING CUP-SHAPED PORTION FOR HOLDING A LIQUID THEREIN AND FIXEDLY CONNECTED TO THE LOWER HOLDER AND AN UPPER, DOWNWARDLY-FACING CUPSHAPED PORTION WHOSE LOWERMOST END PORTION EXTENDS WITHIN THE LOWER CUP-SHAPED PORTION AND FIXEDLY CONNECTED TO THE UPPER HOLDER, SAID UPPER AND LOWER VESSEL PORTIONS BEING SYMMETRICAL ABOUT A COMMON VERTICAL AXIS, A SEALING LIQUID IN THE LOWER CUP-SHAPED PORTION AT A LEVEL AT WHICH THE LOWERMOST END-PORTION OF THE UPPER CUP-SHAPED PORTION IS IMMERSED IN THE LIQUID, SAID LIQUID ACTING TO SEAL OFF THE INTERIOR OF THE VESSEL WHILE ALLOWING RELATIVE MOVEMENT BETWEEN THE UPPER AND LOWER VESSEL PORTIONS, MEANS FOR ROTATING THE UPPER AND LOWER VESSEL PORTIONS RELATIVE TO ONE ANOTHER ABOUT THE COMMON VERTICAL AXIS, HEATING
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) | 1969-02-14 | 1969-08-16 | 1970-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-14 | 1973-08-16 | 1974-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-14 | 1977-08-16 | 1978-02-15 | $7700.00 | Window Closed / Lapsed |