US2929678A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing zinc selenide
Assignee: US Philips Corp
•
Filing: 1957-04-10
•
Granted: 1960-03-22
•
Expires: 1977-04-10
Abstract
No abstract record available.
Inventors
- 👤 Zalm Pieter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 01:51
CPC Classifications
C; C01; C01B; C01B19/00; C01B19/007
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A METHOD OF PRODUCING ZINC SELENIDE COMPRISING THE STEPS, HEATING HYDROGEN GAS IN A CONFINED ZONE TO A TEMPERATURE BETWEEN ABOUT 900*C. AND 1200*C. AND INTRODUCING INTO SAID HEATED HYDROGEN ZINC SELENITE WHEREBY SAID ZINC SELENITE IS SUBSTANTIALLY IMMEDIATELY BROUGHT TO THE TEMPERATURE OF THE HEATED HYDROGEN AND REMOVING THE RESULTANT ZINC SELENIDE FROM THE REACTION MIXTURE.
Claim 2
Independent Claim
57 words
A METHOD OF PRODUCING ZINC SELENIDE COMPRISING THE STEPS, HEATING HYDROGEN GAS IN A CONFINED ZONE TO A TEMPERATURE BETWEEN ABOUT 900*C. AND 1200*C. AND INTRODUCING INTO SAID HEATED HYDROGEN ZINC SELENITE WHEREBY SAID ZINC SELENITE IS SUBSTANTIALLY IMMEDIATELY BROUGHT TO THE TEMPERATURE OF THE HEATED HYDROGEN AND REMOVING THE RESULTANT ZINC SELENIDE FROM THE REACTION MIXTURE.
References Cited (Backward Citations)
US2008753A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-22 | 1963-09-21 | 1964-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-22 | 1967-09-21 | 1968-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-22 | 1971-09-21 | 1972-03-22 | $7700.00 | Window Closed / Lapsed |