US3345209A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Growth control of disproportionation process
Assignee: International Business Machines Corp
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Filing: 1964-04-02
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Granted: 1967-10-03
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Expires: 1984-04-02
Abstract
No abstract record available.
Inventors
- 👤 Cheroff George
- 👤 Reisman Arnold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:54
CPC Classifications
C; C30; C30B; C30B25/00; C30B25/02; C30B29/00; C30B29/02; C30B29/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A PROCESS FOR DEPOSITING GERMANIUM EPITAXIALLY IN A CONSTANT FLOW SYSTEM AT A CONSTANT TOTAL PRESSURE WHICH COMPRISES: (A) REACTING HYDROGEN IODIDE WITH A SOURCE OF GERMANIUM IN PRESENCE OF A CARRIER GAS OF HYDROGEN AND IN INERT GAS IN A FIRST TEMPERATURE ZONE; (B) SUBSEQUENTLY DECOMPOSING THE REACTION PRODUCTS FORMED IN SAID FIRST ZONE IN A SECOND ZONE HAVING A LOWER TEMPERATURE THAN THAT OF THE FIRST ZONE WHEREBY GERMANIUM IS FREED AND DEPOSITS EPITAXIALLY ON A SUBSTRATE IN SAID SECOND ZONE.
Claim 2
Dependent Claim
83 words
A PROCESS FOR DEPOSITING GERMANIUM EPITAXIALLY IN A CONSTANT FLOW SYSTEM AT A CONSTANT TOTAL PRESSURE WHICH COMPRISES: (A) REACTING HYDROGEN IODIDE WITH A SOURCE OF GERMANIUM IN PRESENCE OF A CARRIER GAS OF HYDROGEN AND IN INERT GAS IN A FIRST TEMPERATURE ZONE; (B) SUBSEQUENTLY DECOMPOSING THE REACTION PRODUCTS FORMED IN SAID FIRST ZONE IN A SECOND ZONE HAVING A LOWER TEMPERATURE THAN THAT OF THE FIRST ZONE WHEREBY GERMANIUM IS FREED AND DEPOSITS EPITAXIALLY ON A SUBSTRATE IN SAID SECOND ZONE.
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) | 1970-10-02 | 1971-04-03 | 1971-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-02 | 1975-04-03 | 1975-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-02 | 1979-04-03 | 1979-10-03 | $7700.00 | Window Closed / Lapsed |