US2511289A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Activated protective carbon
Assignee: United States, WAR, Secretary of
•
Filing: 1942-05-01
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Granted: 1950-06-13
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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
2026-10-28 02:02
CPC Classifications
C; C01; C01B; C01B32/00; C01B32/30; C01B32/312; C01B32/342; C01B32/348
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A CATALYTIC PRODUCT HAVING HIGH ACTIVITY FOR REMOVING POISONOUS GASES FROM AIR CONTAMINATED THEREBY, SAID PRODUCT CONSISTING PREDOMINANTLY OF ACTIVATED CARBON IMPREGNATED WITH MINOR PROPORTIONS OF METAL COMPOUNDS WHICH IMPART TO THE ACTIVATED CARBON A LONG ARSINE LIFE, SAID COMPOUNDS BEING SUBSTANTIALLY DRY COPPER OXIDE, COPPER THIOCYANATE, SILVER THIOCYANATE AND A WATER SOLUBLE SODIUM COMPOUND, SAID SILVER THIOCYANATE CONSTITUTING BETWEEN 0.01 AND 0.05 PERCENT OF SAID PRODUCT AND EACH OF THE OTHER OF SAID COMPOUNDS CONSTITUTING BETWEEN 0.03 PERCENT AND 5.0 PERCENT OF THE PRODUCT.
Claim 2
Dependent Claim
85 words
A CATALYTIC PRODUCT HAVING HIGH ACTIVITY FOR REMOVING POISONOUS GASES FROM AIR CONTAMINATED THEREBY, SAID PRODUCT CONSISTING PREDOMINANTLY OF ACTIVATED CARBON IMPREGNATED WITH MINOR PROPORTIONS OF METAL COMPOUNDS WHICH IMPART TO THE ACTIVATED CARBON A LONG ARSINE LIFE, SAID COMPOUNDS BEING SUBSTANTIALLY DRY COPPER OXIDE, COPPER THIOCYANATE, SILVER THIOCYANATE AND A WATER SOLUBLE SODIUM COMPOUND, SAID SILVER THIOCYANATE CONSTITUTING BETWEEN 0.01 AND 0.05 PERCENT OF SAID PRODUCT AND EACH OF THE OTHER OF SAID COMPOUNDS CONSTITUTING BETWEEN 0.03 PERCENT AND 5.0 PERCENT OF THE PRODUCT.
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) | 1953-06-12 | 1953-12-12 | 1954-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-12 | 1957-12-12 | 1958-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-12 | 1961-12-12 | 1962-06-13 | $7700.00 | Window Closed / Lapsed |