US3153584A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Passivation of pyrophoric metal powders by coating with an organic nitrile having a c c unsaturation
Assignee: National Research Corp
•
Filing: 1960-12-27
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Granted: 1964-10-20
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Expires: 1980-12-27
Abstract
No abstract record available.
Inventors
- 👤 Edward J Goon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:21
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/02; B; B22; B22F; B22F1/00; B22F1/10; B22F1/102; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/14; C23F11/146; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12181; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31699
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
THE PROCESS OF PRODUCING STABILIZED METAL POWDERS COMPRISING VAPORIZING A METAL AT A PRESSURE BELOW ABOUT 500 MICRONS HG ABS., CONDENSING THE RESULTANT METAL VAPORS AT A PRESSURE BELOW ABOUT 500 MICRONS HG ABS., COLLECTING THE RESULTANT METAL POWDER, TREATING THE METAL POWDER WITH AN UNPOLYMERIZED ORGANIC NITRILE HAVING C=C UNSATURATION IN LIQWUID FORM TO PROVIDE A COATING OF SAID NITRILE ON SAID POWDER AND SEPARATING THE COATED POWDER.
Claim 2
Dependent Claim
69 words
THE PROCESS OF PRODUCING STABILIZED METAL POWDERS COMPRISING VAPORIZING A METAL AT A PRESSURE BELOW ABOUT 500 MICRONS HG ABS., CONDENSING THE RESULTANT METAL VAPORS AT A PRESSURE BELOW ABOUT 500 MICRONS HG ABS., COLLECTING THE RESULTANT METAL POWDER, TREATING THE METAL POWDER WITH AN UNPOLYMERIZED ORGANIC NITRILE HAVING C=C UNSATURATION IN LIQWUID FORM TO PROVIDE A COATING OF SAID NITRILE ON SAID POWDER AND SEPARATING THE COATED POWDER.
References Cited (Backward Citations)
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Cited
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Cited
US2472680A
Cited
US2718463A
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) | 1967-10-20 | 1968-04-20 | 1968-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-20 | 1972-04-20 | 1972-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-20 | 1976-04-20 | 1976-10-20 | $7700.00 | Window Closed / Lapsed |