US2671739A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plating with sulfides, selenides, and tellurides of chromium, molybdenum, and tungsten
Assignee: AT&T Inc
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Filing: 1949-06-22
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Granted: 1954-03-09
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Expires: 1969-06-22
Abstract
No abstract record available.
Inventors
- 👤 James J Lander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:44
CPC Classifications
C; C23; C23C; C23C16/00; C23C16/22; C23C16/30; C23C16/305; C23C16/40; C23C16/405
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
THE METHOD OF PLATING A SURFACE OF AN OBJECT, WHICH WILL WITHSTAND HEATING, WHICH COMPRISES MAINTAINING THE SURFACE TO THE PLATED AT A TEMPERATURE IN THE RANGE OF FROM 200* TO 800* C., CONTINUOUSLY BRINGING IN CONTACT WITH THE SURFACE TO BE COATED THE GASEOUS CARBONYL OF AN ELEMENT SELECTED FROM THE GROUP CONSISTING OF MOLYBODENUM, TUNGSTEN AND CHROMIUM TOGETHER WITH AT LEAST ONE GASEOUS SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF SULPHUR, SELENIUM, TELLURIUM AND THEIR HYDRIDES, CONTINUOUSLY WITHDRAWING
Claim 2
Independent Claim
80 words
THE METHOD OF PLATING A SURFACE OF AN OBJECT, WHICH WILL WITHSTAND HEATING, WHICH COMPRISES MAINTAINING THE SURFACE TO THE PLATED AT A TEMPERATURE IN THE RANGE OF FROM 200* TO 800* C., CONTINUOUSLY BRINGING IN CONTACT WITH THE SURFACE TO BE COATED THE GASEOUS CARBONYL OF AN ELEMENT SELECTED FROM THE GROUP CONSISTING OF MOLYBODENUM, TUNGSTEN AND CHROMIUM TOGETHER WITH AT LEAST ONE GASEOUS SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF SULPHUR, SELENIUM, TELLURIUM AND THEIR HYDRIDES, CONTINUOUSLY WITHDRAWING
References Cited (Backward Citations)
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-08 | 1957-09-07 | 1958-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-08 | 1961-09-07 | 1962-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-08 | 1965-09-07 | 1966-03-09 | $7700.00 | Window Closed / Lapsed |