US3306701A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of selenides and tellurides
Assignee: Associated Electrical Industries Ltd
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Filing: 1963-05-23
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Granted: 1967-02-28
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Expires: 1983-05-23
Abstract
No abstract record available.
Inventors
- 👤 Anderson James Thomson
- 👤 Shepherd Ronald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:26
CPC Classifications
C; C01; C01B; C01B19/00; C01B19/007
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A METHOD OF PREPARING SELENIDES AND TELLURIDES OF LEAD AND BISMUTH WHICH COMPRISES CONTACTING A FIRST SOLUTION COMPRISING A FIRST SOLUTE SELECTED FROM THE GROUP CONSISTING OF THE OXIDES AND SALTS OF LEAD AND BISMUTH DISSOLVED IN A FIRST SOLVENT SELECTED FROM THE GROUP CONSISTING OF ETHYLENE DIAMINE DERIVATIVES OF ACETIC ACID, AKLYLENE AMINES AND ALKANOL AMINES, AND A SECOND SOLUTION COMPRISING A REACTANT SELECTED FROM THE GROUP CONSISTING OF AMMONIUM SELENIDES AND AMMONIUM TELLURIDES TO PRECIPITATE THE REQUIRED PRODUCT SELECTED FROM THE GROUP CONSISTING OF LEAD SELENIDE, LEAD TELLURIDE, BISMUTH SELENIDE, AND BISMUTH TELLURIDE.
Claim 2
Independent Claim
95 words
A METHOD OF PREPARING SELENIDES AND TELLURIDES OF LEAD AND BISMUTH WHICH COMPRISES CONTACTING A FIRST SOLUTION COMPRISING A FIRST SOLUTE SELECTED FROM THE GROUP CONSISTING OF THE OXIDES AND SALTS OF LEAD AND BISMUTH DISSOLVED IN A FIRST SOLVENT SELECTED FROM THE GROUP CONSISTING OF ETHYLENE DIAMINE DERIVATIVES OF ACETIC ACID, AKLYLENE AMINES AND ALKANOL AMINES, AND A SECOND SOLUTION COMPRISING A REACTANT SELECTED FROM THE GROUP CONSISTING OF AMMONIUM SELENIDES AND AMMONIUM TELLURIDES TO PRECIPITATE THE REQUIRED PRODUCT SELECTED FROM THE GROUP CONSISTING OF LEAD SELENIDE, LEAD TELLURIDE, BISMUTH SELENIDE, AND BISMUTH TELLURIDE.
References Cited (Backward Citations)
US2805917A
Cited
US2767049A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-27 | 1970-08-29 | 1971-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-27 | 1974-08-29 | 1975-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-27 | 1978-08-29 | 1979-02-28 | $7700.00 | Window Closed / Lapsed |