Patent US3427211A successfully refreshed from Google Patents.
US3427211A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of making gallium phosphide dendritic crystals with grown in p-n light emitting junctions
Assignee: International Business Machines Corp
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Filing: 1965-07-28
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Granted: 1969-02-11
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Expires: 1985-07-28
Abstract
No abstract record available.
Inventors
- 👤 Luther M Foster
- 👤 John E Scardefield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:45
CPC Classifications
H; H10; H10H; H10H20/00; H10H20/01; H10H20/011; H10H20/013; H10H20/80; H10P; H10P95/00; Y; Y10; Y10S; Y10S117/00; Y10S117/903; Y10S117/915; Y10S148/00; Y10S148/107; Y10S438/00; Y10S438/914; Y10S438/925
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A METHOD FOR PRODUCING GALLIUM PHOSPHIDE DIODES HAVING EMISSION IN THE REGION OF 5680 A. COMPRISING THE STEPS OF: INTRODUCING GALLIUM AND GALLIUM PHOSPHIDE INTO NONCONTAMINATING VESSELS IN A RATIO SUFFICIENT TO FORM A DILUTE SOLUTION WHEN HEATED, HEATING SAID GALLIUM AND GALLIUM PHOSPHIDE AT A TEMPERATURE SUFFICIENT TO REMOVE ALL GASES, SIMULTANEOUSLY INTRODUCING DONOR AND ACCEPTOR DOPANTS INTO SAID VESSEL, SEALING OFF SAID VESSEL, HEATING SAID GALLIUM, GALLIUM PHOSPHIDE AND SAID DOPANTS IN THE ABSENCE OF OXYGEN AT A TEMPERATURE AND FOR A TIME SUFFICIENT TO DISSOLVE SAID GALLIUM PHOPHIDE, AND COOLING SAID SOLUTION AT A RATE SUFFICIENT TO CAUSE DENDRITIC CRYSTAL GROWTH DURING WHICH SAID DOPANTS SEGREGATE TO FORM P-N LIGHT EMITTING JUCTIONS.
Claim 2
Independent Claim
115 words
A METHOD FOR PRODUCING GALLIUM PHOSPHIDE DIODES HAVING EMISSION IN THE REGION OF 5680 A. COMPRISING THE STEPS OF: INTRODUCING GALLIUM AND GALLIUM PHOSPHIDE INTO NONCONTAMINATING VESSELS IN A RATIO SUFFICIENT TO FORM A DILUTE SOLUTION WHEN HEATED, HEATING SAID GALLIUM AND GALLIUM PHOSPHIDE AT A TEMPERATURE SUFFICIENT TO REMOVE ALL GASES, SIMULTANEOUSLY INTRODUCING DONOR AND ACCEPTOR DOPANTS INTO SAID VESSEL, SEALING OFF SAID VESSEL, HEATING SAID GALLIUM, GALLIUM PHOSPHIDE AND SAID DOPANTS IN THE ABSENCE OF OXYGEN AT A TEMPERATURE AND FOR A TIME SUFFICIENT TO DISSOLVE SAID GALLIUM PHOPHIDE, AND COOLING SAID SOLUTION AT A RATE SUFFICIENT TO CAUSE DENDRITIC CRYSTAL GROWTH DURING WHICH SAID DOPANTS SEGREGATE TO FORM P-N LIGHT EMITTING JUCTIONS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-11 | 1972-08-12 | 1973-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-11 | 1976-08-12 | 1977-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-11 | 1980-08-12 | 1981-02-11 | $7700.00 | Window Closed / Lapsed |