US3846118A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making small particles
Assignee: Graham Magnetics Inc
•
Filing: 1973-03-21
•
Granted: 1974-11-05
•
Expires: 1993-03-21
Abstract
Abstract 1. AS A COMPOSITION OF MATTER, A MASS OF SUB-MICRON PARTICLES OF A NORMALLY PYROPHORIC METAL HAVING BONDED TO THE SURFACE THEREOF, A QUANTITY OF A SILANE PASSIVATING AGENT OF A MOLECULAR WEIGHT BELOW ABOUT 500 EFFECTIVE TO REDUCE THE PYROPHORICITY OF SAID METAL POWDER.
Inventors
- 👤 J Ehrreich
- 👤 A Reti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:15
CPC Classifications
B; B22; B22F; B22F9/00; B22F9/16; B22F9/18; B22F9/24; B22F1/00; B22F1/05; B22F1/054; B82; B82Y; B82Y30/00; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2993; Y10T428/2995
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
44 words
AS A COMPOSITION OF MATTER, A MASS OF SUB-MICRON PARTICLES OF A NORMALLY PYROPHORIC METAL HAVING BONDED TO THE SURFACE THEREOF, A QUANTITY OF A SILANE PASSIVATING AGENT OF A MOLECULAR WEIGHT BELOW ABOUT 500 EFFECTIVE TO REDUCE THE PYROPHORICITY OF SAID METAL POWDER.
Claim 2
Dependent Claim
44 words
AS A COMPOSITION OF MATTER, A MASS OF SUB-MICRON PARTICLES OF A NORMALLY PYROPHORIC METAL HAVING BONDED TO THE SURFACE THEREOF, A QUANTITY OF A SILANE PASSIVATING AGENT OF A MOLECULAR WEIGHT BELOW ABOUT 500 EFFECTIVE TO REDUCE THE PYROPHORICITY OF SAID METAL POWDER.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-04 | 1978-05-06 | 1978-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-04 | 1982-05-06 | 1982-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-04 | 1986-05-06 | 1986-11-05 | $7700.00 | Window Closed / Lapsed |