Patent US2837464A successfully refreshed from Google Patents.
Patent US3341364A successfully refreshed from Google Patents.
US3341364A
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Preparation of thin film indium antimonide from bulk indium antimonide
Assignee: Individual
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Filing: 1964-07-27
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Granted: 1967-09-12
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Expires: 1984-07-27
Abstract
No abstract record available.
Inventors
- 👤 David A Collins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:58
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/06; C23C14/14; C23C14/18; C23C14/58; C23C14/5806; C23C14/584; C30; C30B; C30B13/00; C30B29/00; C30B29/10; C30B29/40; Y; Y10; Y10S; Y10S148/00; Y10S148/169
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
THE PREPARATION FROM BULK INDIUM ANTIMONIDE OF THIN INDIUM-ANTIMONIDE FILMS HAVING HIGH HALL COEFFICIENT AND MAXIMUM MAGNETORESISTANCE COMPRISING: (A) EVAPORATION OF BULK INSB ONTO AN UNHEATED SUITABLE SUBSTRATE IN PROPORTION TO PROVIDE AN INSB FILM OF UP TO SEVERAL MICRONS THICKNESS AS DESIRED AT APPROXIMATELY 10**-3 TORR VACUUM PRESSURE, (B) COATING SAID INSB FILM IN VACUUM WITH A THIN-FILM OF PURE INDIUM OF APPROXIMATELY 100-500 A. THICKNESS, (C) HEATING SAID INDIUM COATED INSB FILM IN VACUUM UNTIL SAID PURE INDIUM COATING MELTS ON THE SURFACE OF SAID INSB FILM, (D) FURTHER HEATING SAID COATED FILM IN VACUUM UNTIL THE INSB ALSO LIQUIFIES, AND THEN REMOVING THE HEAT ALLOWING THE COMPOSITE FILM TO COOL AND RECRYSTALLIZE WITH THE INDIUM AND ANTIMONY RECOMBINED LEAVING A SLIGHT EXCESS OF FREE INDIUM BETWEEN THE CRYSTALLITES.
Claim 2
Dependent Claim
131 words
THE PREPARATION FROM BULK INDIUM ANTIMONIDE OF THIN INDIUM-ANTIMONIDE FILMS HAVING HIGH HALL COEFFICIENT AND MAXIMUM MAGNETORESISTANCE COMPRISING: (A) EVAPORATION OF BULK INSB ONTO AN UNHEATED SUITABLE SUBSTRATE IN PROPORTION TO PROVIDE AN INSB FILM OF UP TO SEVERAL MICRONS THICKNESS AS DESIRED AT APPROXIMATELY 10**-3 TORR VACUUM PRESSURE, (B) COATING SAID INSB FILM IN VACUUM WITH A THIN-FILM OF PURE INDIUM OF APPROXIMATELY 100-500 A. THICKNESS, (C) HEATING SAID INDIUM COATED INSB FILM IN VACUUM UNTIL SAID PURE INDIUM COATING MELTS ON THE SURFACE OF SAID INSB FILM, (D) FURTHER HEATING SAID COATED FILM IN VACUUM UNTIL THE INSB ALSO LIQUIFIES, AND THEN REMOVING THE HEAT ALLOWING THE COMPOSITE FILM TO COOL AND RECRYSTALLIZE WITH THE INDIUM AND ANTIMONY RECOMBINED LEAVING A SLIGHT EXCESS OF FREE INDIUM BETWEEN THE CRYSTALLITES.
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) | 1970-09-11 | 1971-03-13 | 1971-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-11 | 1975-03-13 | 1975-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-11 | 1979-03-13 | 1979-09-12 | $7700.00 | Window Closed / Lapsed |