US3065048A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing heavy metal tellurides
Assignee: Merck and Co Inc
•
Filing: 1959-01-06
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Granted: 1962-11-20
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Expires: 1979-01-06
Abstract
No abstract record available.
Inventors
- 👤 John B Coun
- 👤 James V Magee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:37
CPC Classifications
C; C01; C01B; C01B19/00; C01B19/007; C01P; C01P2002/00; C01P2002/50; C01P2002/52; C01P2002/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
THE PROCESS OF PRODUCING ZINC TELLURIDE WHICH COMPRISES INTIMATELY CONTACTING TELLURIUM WITH AN AMOUNT OF ZINC IN EXCESS OF THE AMOUNT REQUIRED FOR THE FORMATION OF ZINC TELLURIDE IN A SOLUTION OF AN ALKALI METAL HYDROXIDE OF SUFFICIENT STRENGTH TO PREVENT PRECIPITATION OF ZINC TELLURIDE UNTIL THE CHARACTERISTIC COLOR OF POLYTELLURIDE ION SUBSTANTIALLY DISAPPEARS, REDUCING THE HYDROXIDE ION CONCENTRATION OF SUCH SOLUTION UNTIL ZINC TELLURIDE PRECIPITATES FROM THE SOLUTION AND RECOVERING THE SOLID ZINC TELLURIDE THUS FORMED.
Claim 2
Dependent Claim
77 words
THE PROCESS OF PRODUCING ZINC TELLURIDE WHICH COMPRISES INTIMATELY CONTACTING TELLURIUM WITH AN AMOUNT OF ZINC IN EXCESS OF THE AMOUNT REQUIRED FOR THE FORMATION OF ZINC TELLURIDE IN A SOLUTION OF AN ALKALI METAL HYDROXIDE OF SUFFICIENT STRENGTH TO PREVENT PRECIPITATION OF ZINC TELLURIDE UNTIL THE CHARACTERISTIC COLOR OF POLYTELLURIDE ION SUBSTANTIALLY DISAPPEARS, REDUCING THE HYDROXIDE ION CONCENTRATION OF SUCH SOLUTION UNTIL ZINC TELLURIDE PRECIPITATES FROM THE SOLUTION AND RECOVERING THE SOLID ZINC TELLURIDE THUS FORMED.
References Cited (Backward Citations)
US2008753A
Cited
GB786310A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-11-19 | 1966-05-21 | 1966-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-19 | 1970-05-21 | 1970-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-19 | 1974-05-21 | 1974-11-20 | $7700.00 | Window Closed / Lapsed |