US2690980A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbonyl process
Assignee: AT&T Inc
•
Filing: 1951-03-14
•
Granted: 1954-10-05
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Expires: 1971-03-14
Abstract
No abstract record available.
Inventors
- 👤 James J Lander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:26
CPC Classifications
C; C23; C23C; C23C16/00; C23C16/04; C23C16/045; C23C16/06; C23C16/16; C23C16/22; C23C16/30; C23C16/32; C23C16/44; C23C16/4401; C23C16/4402
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
THE METHOD OF PLATING A SURFACE WHICH COMPRISES MAINTAINING THE SURFACE TO BE PLATED AT A TEMPERATURE OF FROM 200* C. TO 600* C., PASSING CARBONYL VAPOR OF A METAL SELECTED FROM THE GROUP CONSISTING OF TUNGSTEN, CHROMIUM AND MOLYBDENUM TOGETHER WITH CARBON MONOXIDE IN ADDITION TO THAT PRODUCED BY DECOMPOSITION OF CARBONYL AND UP TO 1,000 MOLECULES OF HYDROGEN PER MOLECULE OF METALLIC CARBONYL OVER THE SURFACE TO BE PLATED, AND MAINTAINING THE PRESSURE AT FROM 0.001 TO 12 MILLIMETERS OF MERCURY AT THE SURFACE.
Claim 2
Independent Claim
86 words
THE METHOD OF PLATING A SURFACE WHICH COMPRISES MAINTAINING THE SURFACE TO BE PLATED AT A TEMPERATURE OF FROM 200* C. TO 600* C., PASSING CARBONYL VAPOR OF A METAL SELECTED FROM THE GROUP CONSISTING OF TUNGSTEN, CHROMIUM AND MOLYBDENUM TOGETHER WITH CARBON MONOXIDE IN ADDITION TO THAT PRODUCED BY DECOMPOSITION OF CARBONYL AND UP TO 1,000 MOLECULES OF HYDROGEN PER MOLECULE OF METALLIC CARBONYL OVER THE SURFACE TO BE PLATED, AND MAINTAINING THE PRESSURE AT FROM 0.001 TO 12 MILLIMETERS OF MERCURY AT THE SURFACE.
References Cited (Backward Citations)
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Cited
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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) | 1957-10-04 | 1958-04-05 | 1958-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-04 | 1962-04-05 | 1962-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-04 | 1966-04-05 | 1966-10-05 | $7700.00 | Window Closed / Lapsed |