Patent US2500008A successfully refreshed from Google Patents.
US2500008A
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Ammonia synthesis
Assignee: Mathieson Chemical Corp
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Filing: 1947-07-16
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Granted: 1950-03-07
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Expires: 1967-07-16
Abstract
No abstract record available.
Inventors
- 👤 Chester N Richardson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:04
CPC Classifications
C; C01; C01C; C01C1/00; C01C1/02; C01C1/04; C01C1/0405; C01C1/0417; C01C1/0429; C01C1/0411; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52; Y10; Y10S; Y10S159/00; Y10S159/13; Y10S159/90
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
35 words
A PROCESS FOR THE SYNTHESIS OF AMMONIA FROM ITS CONSTITUENT ELEMENTS WHICH COMPRISES SUBJECTING A GASEOUS MIXTURE OF NITROGEN AND HYDROGEN CARRYING A FINELY DIVIDED CATALYST IN SUSPENSION THEREIN TO ULTRASONIC VIBRATIONS OF A FRE-
Claim 2
Dependent Claim
35 words
A PROCESS FOR THE SYNTHESIS OF AMMONIA FROM ITS CONSTITUENT ELEMENTS WHICH COMPRISES SUBJECTING A GASEOUS MIXTURE OF NITROGEN AND HYDROGEN CARRYING A FINELY DIVIDED CATALYST IN SUSPENSION THEREIN TO ULTRASONIC VIBRATIONS OF A FRE-
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) | 1953-03-06 | 1953-09-05 | 1954-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-06 | 1957-09-05 | 1958-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-06 | 1961-09-05 | 1962-03-07 | $7700.00 | Window Closed / Lapsed |