Patent US2513997A successfully refreshed from Google Patents.
US2513997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coated metal hydride
Assignee: Metal Hydrides Inc
•
Filing: 1948-06-30
•
Granted: 1950-07-04
•
Expires: 1968-06-30
Abstract
No abstract record available.
Inventors
- 👤 Jr Thomas R P Gibb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:45
CPC Classifications
C; C01; C01B; C01B6/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
206 words
A COMPOSITION CONSISTING ESSENTIALLY OF SOLID FINELY DIVIDED PARTICLES OF A WATER REACTIVE HYDRIDE OF A METAL HAVING A COATING CONSISTING ESSENTIALLY OF A WATER INSOLUBLE ORGANIC ACID AND A WATER REPELLANT COMPOUND WHICH IS SOLID AT NORMAL TEMPERATURE SELECTED FROM THE GROUP CONSISTING OF HYDROCARBONS AND ESTERS WHICH ARE MISCIBLE WITH SAID ACID, SAID ACID HAVING THE GENERAL FORMULA R(X)N WHERE N IS AN INTEGER, R IS A RADICAL HAVING NOT LESS THAN SIX OR MORE THAN FORTY CARBON ATOMS AND SELECTED FROM THE GROUP CONSISTING OF A HYDROCARBON RADICAL, A HYDROCARBON RADICAL HAVING AN ETHER GROUP, A HYDROCARBON RADICAL HAVING A KETONE GROUP, A HYDROCARBON RADICAL HAVING AN ESTER GROUP AND A HYDROCARBON RADICAL HAVING AN OH GROUP, AND X IS SELECTED FROM THE GROUP CONSISTING OF COOH AND SO3H GROUPS, THE RATIO OF THE NUMBER OF CARBON ATOMS IN SAID ACID TO THE COMBINED NUMBER OF X GROUPS AND OH GROUPS BEING NOT LESS THAN SIX TO ONE, THE SIZE OF SAID PARTICLES BEING GREATER THAN 20 MESH, SAID ACID BEING NOT LESS THAN 1 PER CENT BY WEIGHT OF THE COMPOSITION, SAID COATING BEING NOT LESS THAN 3 PER CENT AND NOT MORE THAN 20 PER CENT BY WEIGHT OF THE COMPOSITION.
Claim 2
Dependent Claim
206 words
A COMPOSITION CONSISTING ESSENTIALLY OF SOLID FINELY DIVIDED PARTICLES OF A WATER REACTIVE HYDRIDE OF A METAL HAVING A COATING CONSISTING ESSENTIALLY OF A WATER INSOLUBLE ORGANIC ACID AND A WATER REPELLANT COMPOUND WHICH IS SOLID AT NORMAL TEMPERATURE SELECTED FROM THE GROUP CONSISTING OF HYDROCARBONS AND ESTERS WHICH ARE MISCIBLE WITH SAID ACID, SAID ACID HAVING THE GENERAL FORMULA R(X)N WHERE N IS AN INTEGER, R IS A RADICAL HAVING NOT LESS THAN SIX OR MORE THAN FORTY CARBON ATOMS AND SELECTED FROM THE GROUP CONSISTING OF A HYDROCARBON RADICAL, A HYDROCARBON RADICAL HAVING AN ETHER GROUP, A HYDROCARBON RADICAL HAVING A KETONE GROUP, A HYDROCARBON RADICAL HAVING AN ESTER GROUP AND A HYDROCARBON RADICAL HAVING AN OH GROUP, AND X IS SELECTED FROM THE GROUP CONSISTING OF COOH AND SO3H GROUPS, THE RATIO OF THE NUMBER OF CARBON ATOMS IN SAID ACID TO THE COMBINED NUMBER OF X GROUPS AND OH GROUPS BEING NOT LESS THAN SIX TO ONE, THE SIZE OF SAID PARTICLES BEING GREATER THAN 20 MESH, SAID ACID BEING NOT LESS THAN 1 PER CENT BY WEIGHT OF THE COMPOSITION, SAID COATING BEING NOT LESS THAN 3 PER CENT AND NOT MORE THAN 20 PER CENT BY WEIGHT OF THE COMPOSITION.
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) | 1953-07-03 | 1954-01-02 | 1954-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-03 | 1958-01-02 | 1958-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-03 | 1962-01-02 | 1962-07-04 | $7700.00 | Window Closed / Lapsed |