US3212939A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of lowering the surface recombination velocity of indium antimonide crystals
Assignee: Individual
•
Filing: 1961-12-06
•
Granted: 1965-10-19
•
Expires: 1981-12-06
Abstract
No abstract record available.
Inventors
- 👤 John L Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:59
CPC Classifications
H; H10; H10P; H10P34/00; Y; Y10; Y10S; Y10S148/00; Y10S148/169; Y10S438/00; Y10S438/904
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
THE PROCESS OF PRODUCING A UNIFORM LOW SURFACE RECOMBINATION VELOCITY ON THE (1-1-1) FACE OF AN INDIUM ANTIMONIDE CRYSTAL COMPRISING THE STEPS OF IMMERSING SAID CRYSTAL IN A SOLUTION OF CP-4-A TO REMOVE SURFACE IRREGULARITIES, DILUTING SAID SOLUTION WITH LARGE QUANTITIES OF FIRST DEMINERALIZED WATER AND NEXT METHYL ALCOHOL TO REMOVE SAID SOLUTION WHILE MAINTAINING SAID CRYSTAL IMMERSED THROUGHOUT THE ABOVE IN SAID PROCESS, REMOVING SAID CRYSTAL FROM IMMERSION, PLACING SAID CRYSTAL IN A GLASS ENCLOSURE CONTAINING A DRY NITROGEN ATMOSPHERE AND EXCITING A GLOW DISCHARGE IN SAID ATMOSPHERE AND IN CLOSE PROXIMITY TO BE THE 1-1-1 FACE OF SAID CRYSTAL FOR A TIME SUFFICIENT TO SUBSTANTIALLY REDUCE THE SURFACE RECOMBINATION VELOCITY OF SAID CRYSTAL.
Claim 2
Dependent Claim
115 words
THE PROCESS OF PRODUCING A UNIFORM LOW SURFACE RECOMBINATION VELOCITY ON THE (1-1-1) FACE OF AN INDIUM ANTIMONIDE CRYSTAL COMPRISING THE STEPS OF IMMERSING SAID CRYSTAL IN A SOLUTION OF CP-4-A TO REMOVE SURFACE IRREGULARITIES, DILUTING SAID SOLUTION WITH LARGE QUANTITIES OF FIRST DEMINERALIZED WATER AND NEXT METHYL ALCOHOL TO REMOVE SAID SOLUTION WHILE MAINTAINING SAID CRYSTAL IMMERSED THROUGHOUT THE ABOVE IN SAID PROCESS, REMOVING SAID CRYSTAL FROM IMMERSION, PLACING SAID CRYSTAL IN A GLASS ENCLOSURE CONTAINING A DRY NITROGEN ATMOSPHERE AND EXCITING A GLOW DISCHARGE IN SAID ATMOSPHERE AND IN CLOSE PROXIMITY TO BE THE 1-1-1 FACE OF SAID CRYSTAL FOR A TIME SUFFICIENT TO SUBSTANTIALLY REDUCE THE SURFACE RECOMBINATION VELOCITY OF SAID CRYSTAL.
References Cited (Backward Citations)
US2750544A
Cited
US2771568A
Cited
US2763581A
Cited
US2899344A
Cited
US3105784A
Cited
US3115424A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-18 | 1969-04-19 | 1969-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-18 | 1973-04-19 | 1973-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-18 | 1977-04-19 | 1977-10-19 | $7700.00 | Window Closed / Lapsed |