Patent US2513508A successfully refreshed from Google Patents.
US2513508A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbon impregnated with sodium cyanate and copper oxide
Assignee: United States, WAR, Secretary of
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Filing: 1942-05-01
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Granted: 1950-07-04
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Expires: 1962-05-01
Abstract
No abstract record available.
Inventors
- 👤 Jacque C Morrell
- 👤 George T Tobiasson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:51
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/14; B01D53/1493; A; A62; A62B; A62B21/00; B01D53/02; B01J; B01J20/00; B01J20/02; B01J20/20; C; C01; C01B; C01B32/00; C01B32/30; C01B32/312; C01B32/342; C01B32/348
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
A CATALYTIC ABSORBENT PARTICULARLY ADAPTED FOR REMOVING BOTH ARSINE AND CYANIDE CHLORIDE FROM GAS CONTAMINATED THEREWITH, SAID ABSORBENT BEING INCLOSED IN AN AIR TIGHT CONTAINER IN A CONDITION READY FOR LATER USE IN A GAS MASK OR THE LIKE AND BEING AN ACTIVATED CARBON IMPREGANTED IN A SINGLE STEP IMPREGNATION PROCESS WITH AN INTEGRATED SOLUTION, SAID SOLUTION INCLUDING ABOUT 0.5 PERCENT SODIUM DYANATE AND CONSISTING OF AN ADMIXTURE OF AN AQUEOUS COPPER AMMONIUM COMPLEX CONSISTING OF FROM 70 PERCENT TO 80 PERCENT WATER FROM 5 PERCENT TO 11 PERCENT OF COPPER, FROM 8 TO 15 PERCENT AMMONIA AND FROM 3 TO 8 PERCENT CARBON DIOXIDE AND AN AQUEOUS SOLUTION CONSISTING OF FROM ABOUT 50 TO 75 PERCENT WATER, AND OF FROM 25 TO 50 PERCENT SODIUM TRICYANAE, SAID CARBON BEING FIRST DRIED, THEN HEATED FOR MORE THAN AN HOUR AT A TEMPERATURE OF FROM ABOUT 275*F., TO ABOUT 350*F.
Claim 2
Dependent Claim
149 words
A CATALYTIC ABSORBENT PARTICULARLY ADAPTED FOR REMOVING BOTH ARSINE AND CYANIDE CHLORIDE FROM GAS CONTAMINATED THEREWITH, SAID ABSORBENT BEING INCLOSED IN AN AIR TIGHT CONTAINER IN A CONDITION READY FOR LATER USE IN A GAS MASK OR THE LIKE AND BEING AN ACTIVATED CARBON IMPREGANTED IN A SINGLE STEP IMPREGNATION PROCESS WITH AN INTEGRATED SOLUTION, SAID SOLUTION INCLUDING ABOUT 0.5 PERCENT SODIUM DYANATE AND CONSISTING OF AN ADMIXTURE OF AN AQUEOUS COPPER AMMONIUM COMPLEX CONSISTING OF FROM 70 PERCENT TO 80 PERCENT WATER FROM 5 PERCENT TO 11 PERCENT OF COPPER, FROM 8 TO 15 PERCENT AMMONIA AND FROM 3 TO 8 PERCENT CARBON DIOXIDE AND AN AQUEOUS SOLUTION CONSISTING OF FROM ABOUT 50 TO 75 PERCENT WATER, AND OF FROM 25 TO 50 PERCENT SODIUM TRICYANAE, SAID CARBON BEING FIRST DRIED, THEN HEATED FOR MORE THAN AN HOUR AT A TEMPERATURE OF FROM ABOUT 275*F., TO ABOUT 350*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) | 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 |