Patent US2604442A successfully refreshed from Google Patents.
US2604442A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of metal powders of small size
Assignee: GAF Chemicals Corp
•
Filing: 1950-05-12
•
Granted: 1952-07-22
•
Expires: 1970-05-12
Abstract
No abstract record available.
Inventors
- 👤 Joseph M Lambert
- 👤 Franklin A Hamm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:05
CPC Classifications
B; B22; B22F; B22F9/00; B22F9/16; B22F9/30; B22F9/305
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
IN THE PROCESS OF PRODUCING METALS OF A VERY SMALL PARTICLE SIZE AND UNIFORM SIZE DISTRIBUTION BY THERMALLY DECOMPOSITION A METAL CARBONYL IN THE FREE DECOMPOSITION SPACE OF A REACTOR, THE IMPROVEMENT WHICH COMPRISES SUBJECTING THE METAL CARBONYL, JUST PRIOR TO ITS ADMISSION INTO SAID DECOMPOSITION SPACE, TO A RADIATION WITH RADIANT ENERGY TO CAUSE DECOMPOSITION OF A PART OF THE METAL CARBONYL WITH THE FORMATION OF METAL PARTICLES SERVING AS NUCLEI FOR THE DEPOSITION THEREON OF METAL PRODUCED BY THE THERMAL DECOMPOSITION OF THE METAL CARBONYL IN SAID FREE DECOMPOSITION SPACE.
Claim 2
Dependent Claim
92 words
IN THE PROCESS OF PRODUCING METALS OF A VERY SMALL PARTICLE SIZE AND UNIFORM SIZE DISTRIBUTION BY THERMALLY DECOMPOSITION A METAL CARBONYL IN THE FREE DECOMPOSITION SPACE OF A REACTOR, THE IMPROVEMENT WHICH COMPRISES SUBJECTING THE METAL CARBONYL, JUST PRIOR TO ITS ADMISSION INTO SAID DECOMPOSITION SPACE, TO A RADIATION WITH RADIANT ENERGY TO CAUSE DECOMPOSITION OF A PART OF THE METAL CARBONYL WITH THE FORMATION OF METAL PARTICLES SERVING AS NUCLEI FOR THE DEPOSITION THEREON OF METAL PRODUCED BY THE THERMAL DECOMPOSITION OF THE METAL CARBONYL IN SAID FREE DECOMPOSITION SPACE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-22 | 1956-01-21 | 1956-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-22 | 1960-01-21 | 1960-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-22 | 1964-01-21 | 1964-07-22 | $7700.00 | Window Closed / Lapsed |