US3830753A
Expired / Lapsed
US
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Catalyst for ammonia synthesis and a process producing the catalyst
Assignee: Sagami Chemical Research Institute
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Filing: 1971-09-13
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Granted: 1974-08-20
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Expires: 1991-09-13
Abstract
Abstract A NOVEL CATALYST FOR AMMONIA SYNTHESIS AND A PROCESS FOR PRODUCING THE CATALYST ARE DESCRIBED. THE CATALYST COMPRISES (A) GRAPHITE, (B) A TRANSITION METAL COMPOUND AND (C) AN ALKALI METAL. THE CATALYST OF THIS INVENTION IS CAPABLE OF SYNTHESIZING AMMONIA FROM HYDROGEN AND NITROGEN OR AIR AT A RELATIVELY LOW TEMPERATURE EVEN AT ROOM TEMPERATURE UNDER NORMAL OR A REDUCED PRESSURE.
Inventors
- 👤 M Ichikawa
- 👤 T Kondo
- 👤 K Tamaru
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:55
CPC Classifications
C; C01; C01C; C01C1/00; C01C1/02; C01C1/04; C01C1/0405; C01C1/0411; B; B01; B01J; B01J27/00; B01J27/20; B01J27/22; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-19 | 1978-02-18 | 1978-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-19 | 1982-02-18 | 1982-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-19 | 1986-02-18 | 1986-08-20 | $7700.00 | Window Closed / Lapsed |