Patent US2674528A successfully refreshed from Google Patents.
US2674528A
Expired / Lapsed
US
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Production of metal carbonyl powders of small size
Assignee: GAF Chemicals Corp
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Filing: 1951-01-22
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Granted: 1954-04-06
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Expires: 1971-01-22
Abstract
No abstract record available.
Inventors
- 👤 Beller Hans
- 👤 Otto W Schnetzler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:10
CPC Classifications
C; C22; C22B; C22B5/00; C22B5/02; C22B5/20; B; B22; B22F; B22F9/00; B22F9/16; B22F9/30; B22F9/305
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
THE PROCESS OF PRODUCING CARBONYL METALS OF A VERY SMALL PARTICLE SIZE AND UNIFORM SIZE DISTRIBUTION, WHICH COMPRISES THERMALLY DECOMPOSING A METAL CARBONYL IN THE FREE SPACE OF A REACTOR WHILE SUBJECTING THE METAL CARBONYL TO THE ACTION OF SOUND WAVES ADJUSTED TO CAUSE LOCAL TEMPERATURE RISES OF FROM ABOUT 10 TO 20* F.
Claim 2
Dependent Claim
54 words
THE PROCESS OF PRODUCING CARBONYL METALS OF A VERY SMALL PARTICLE SIZE AND UNIFORM SIZE DISTRIBUTION, WHICH COMPRISES THERMALLY DECOMPOSING A METAL CARBONYL IN THE FREE SPACE OF A REACTOR WHILE SUBJECTING THE METAL CARBONYL TO THE ACTION OF SOUND WAVES ADJUSTED TO CAUSE LOCAL TEMPERATURE RISES OF FROM ABOUT 10 TO 20* F.
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) | 1957-04-05 | 1957-10-05 | 1958-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-05 | 1961-10-05 | 1962-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-05 | 1965-10-05 | 1966-04-06 | $7700.00 | Window Closed / Lapsed |