Patent US501225A successfully refreshed from Google Patents.
US3129059A
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Process for manufacturing high purity gallium arsenide
Assignee: Wacker Chemie AG
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Filing: 1961-04-18
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Granted: 1964-04-14
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Expires: 1981-04-18
Abstract
No abstract record available.
Inventors
- 👤 Enk Eduard
- 👤 Jacob Herbert
- 👤 Nickl Julius
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:14
CPC Classifications
C; C01; C01B; C01B25/00; C01B25/06; C01B13/00; C01B13/14; C01B13/32; C01B13/322; C01B13/326; C01B17/00; C01B17/20; C01B19/00; C01B19/007; C01B32/00; C01B32/90; C01B35/00; C01B35/02; C01B35/04; C01B9/00; C01G; C01G1/00; C01G1/06; C01G1/12; C22; C22C; C22C1/00; C22C1/007; C30; C30B; C30B11/00; C30B11/04; C30B11/08; C30B11/12; F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/06; F16C33/12; F16C33/121; H; H10; H10P; H10P95/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
PROCESS FOR PRODUCING HIGH PURITY GALLIUM ARSENIDE WHICH COMPRISES PLACING A NUCLEUS OF GALLIUM ARSENIDE IN A REACTION VESSEL OUT OF CONTACT WITH THE LATTER, EVACUATING SAID VESSEL, VAPORIZING ARSENIC WITHIN SAID VESSEL AT A CONSTANT TEMPERATURE OF 645$5*C., PLACING A MELT OF GALLIUM UPON SAID NUCLEUS WITHOUT ALLOWING ANY OF SAID MOLTEN
Claim 2
Dependent Claim
53 words
PROCESS FOR PRODUCING HIGH PURITY GALLIUM ARSENIDE WHICH COMPRISES PLACING A NUCLEUS OF GALLIUM ARSENIDE IN A REACTION VESSEL OUT OF CONTACT WITH THE LATTER, EVACUATING SAID VESSEL, VAPORIZING ARSENIC WITHIN SAID VESSEL AT A CONSTANT TEMPERATURE OF 645$5*C., PLACING A MELT OF GALLIUM UPON SAID NUCLEUS WITHOUT ALLOWING ANY OF SAID MOLTEN
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) | 1967-04-14 | 1967-10-14 | 1968-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-14 | 1971-10-14 | 1972-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-14 | 1975-10-14 | 1976-04-14 | $7700.00 | Window Closed / Lapsed |