US3348919A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing hydrogen from finely divided metals and water at ambient temperatures
Assignee: Colgate Palmolive Co
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Filing: 1964-01-17
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Granted: 1967-10-24
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Expires: 1984-01-17
Abstract
No abstract record available.
Inventors
- 👤 Shumway Durland Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:45
CPC Classifications
C; C01; C01B; C01B3/00; C01B3/02; C01B3/06; C01B3/061; C01B3/08; C01B3/10; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
IN A METHOD FOR PRODUCING AND RECOVERING HYDROGEN BY THE INTERACTION OF A FINELY DIVIDED METAL SELECTED FROM THE GROUP CONSISTING OF ALUMINUM, ZINC, IRON AND COPPER WITH LIQUID WATER, THE IMPROVEMENT WHICH COMPRISES CARRYING OUT THE SAID REACTION WITH A CATALYTIC AMOUNT OF WATER-SOLUBLE ALKALI METAL SALT OF A POLYAMINOCARBOXYLIC ACID METAL CHELATING AGENT DISSOLVED IN SAID WATER.
Claim 2
Dependent Claim
59 words
IN A METHOD FOR PRODUCING AND RECOVERING HYDROGEN BY THE INTERACTION OF A FINELY DIVIDED METAL SELECTED FROM THE GROUP CONSISTING OF ALUMINUM, ZINC, IRON AND COPPER WITH LIQUID WATER, THE IMPROVEMENT WHICH COMPRISES CARRYING OUT THE SAID REACTION WITH A CATALYTIC AMOUNT OF WATER-SOLUBLE ALKALI METAL SALT OF A POLYAMINOCARBOXYLIC ACID METAL CHELATING AGENT DISSOLVED IN SAID WATER.
References Cited (Backward Citations)
US98442A
Cited
US1059818A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-23 | 1971-04-24 | 1971-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-23 | 1975-04-24 | 1975-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-23 | 1979-04-24 | 1979-10-24 | $7700.00 | Window Closed / Lapsed |