Patent US2898249A successfully refreshed from Google Patents.
US2898249A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing semi-conductor alloys
Assignee: RCA Corp
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Filing: 1958-01-31
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Granted: 1959-08-04
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Expires: 1978-01-31
Abstract
No abstract record available.
Inventors
- 👤 Robert V Jensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:51
CPC Classifications
F; F16; F16F; F16F9/00; F16F9/02; F16F9/04; F16F9/0454; C; C30; C30B; C30B11/00; C30B11/04; C30B11/06; C30B13/00; C30B13/08; C30B15/00; C30B29/00; C30B29/10; C30B29/52; C30B9/00; C30B9/04; C30B9/06; H; H10; H10P; H10P95/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
175 words
THE METHOD OF MANUFACTURING SINGLY CRYSTAL ALLOY MATERIAL WHICH COMPRISES IN COMBINATION THE STEPS OF PROVIDING A MASS CONSISTING ESSENTIALLY OF ONE CONSTITUENT OF SAID ALLOY MATERIAL, CONTACTING A PORTION OF SAID MASS WITH A SEED CRYSTAL MADE OF THE SAME SUBSTANCE AS SAID OEN CONSTITUENT, MELTING SAID PORTION OF SAID MASS WHICH IS IN CONTACT WITH SID SEED CRYSTAL AND ALSO MELTING THE REMAINDER OF SAID MASS, SOLIDIFYING SAID PORTION TO START A SINGLE CRYSTAL GROWING, APPLYING TO SAID MASS IN ITS MOLTEN FORM SUCCESSIVELY INCREASING PREDETERMINED QUANTITIES OF ANOTHER CONSTITUENT OF SID ALLOY MATERIAL IN THE SOLID STATE THEREOF, SAID QUANTITIES BEING SUCCESSIVELY INCREASED UNTIL SUFFICIENT TO ESTABLISH A PREDETERMINED CONSTANT CONCENTRATION RATIO OF SAID ALLOY CONSTITUENTS ULTIMATELY DESIRED, AND MELTING SUCCESSIVE QUANTITIES OF SAID OTHER CONSTITUENTS OF SAID ALLOY MATERIAL TO CAUSE BOTH OF SAID CONSTITUENTS TO ALLOY AND ALSO SUCCESSIVELY SOLIDIFYING SAID MASS AND SAID OTHER CONSITUENT TO FORM A SINGLE CRYSTAL OF SAID ALLOY, SAID CRYSTAL BEING NON-HOMOGENEOUS ALONG ITS LENGTH UNTIL SAID PREDETERMINED CONSTANT CONCENTRATION RATIO IS ESTABLISHED THEREIN.
Claim 2
Independent Claim
175 words
THE METHOD OF MANUFACTURING SINGLY CRYSTAL ALLOY MATERIAL WHICH COMPRISES IN COMBINATION THE STEPS OF PROVIDING A MASS CONSISTING ESSENTIALLY OF ONE CONSTITUENT OF SAID ALLOY MATERIAL, CONTACTING A PORTION OF SAID MASS WITH A SEED CRYSTAL MADE OF THE SAME SUBSTANCE AS SAID OEN CONSTITUENT, MELTING SAID PORTION OF SAID MASS WHICH IS IN CONTACT WITH SID SEED CRYSTAL AND ALSO MELTING THE REMAINDER OF SAID MASS, SOLIDIFYING SAID PORTION TO START A SINGLE CRYSTAL GROWING, APPLYING TO SAID MASS IN ITS MOLTEN FORM SUCCESSIVELY INCREASING PREDETERMINED QUANTITIES OF ANOTHER CONSTITUENT OF SID ALLOY MATERIAL IN THE SOLID STATE THEREOF, SAID QUANTITIES BEING SUCCESSIVELY INCREASED UNTIL SUFFICIENT TO ESTABLISH A PREDETERMINED CONSTANT CONCENTRATION RATIO OF SAID ALLOY CONSTITUENTS ULTIMATELY DESIRED, AND MELTING SUCCESSIVE QUANTITIES OF SAID OTHER CONSTITUENTS OF SAID ALLOY MATERIAL TO CAUSE BOTH OF SAID CONSTITUENTS TO ALLOY AND ALSO SUCCESSIVELY SOLIDIFYING SAID MASS AND SAID OTHER CONSITUENT TO FORM A SINGLE CRYSTAL OF SAID ALLOY, SAID CRYSTAL BEING NON-HOMOGENEOUS ALONG ITS LENGTH UNTIL SAID PREDETERMINED CONSTANT CONCENTRATION RATIO IS ESTABLISHED THEREIN.
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) | 1962-08-03 | 1963-02-02 | 1963-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-03 | 1967-02-02 | 1967-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-03 | 1971-02-02 | 1971-08-04 | $7700.00 | Window Closed / Lapsed |