Patent US2963441A successfully refreshed from Google Patents.
US2963441A
Expired / Lapsed
US
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Sorbents and process for their preparation
Assignee: Individual
•
Filing: 1944-11-23
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Granted: 1960-12-06
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Expires: 1964-11-23
Abstract
No abstract record available.
Inventors
- 👤 Frank E Dolian
- 👤 Hormats Saul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:47
CPC Classifications
C; C01; C01B; C01B32/00; C01B32/30; C01B32/354
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
69 words
A METHOD OF RENDERING POROUS ACTIVATED CHARCOAL ADAPTED TO PROVIDE LONGER AND BETTER PROTECTION AGAINST CYANOGEN CHLORIDE WHICH CONSISTS IN USING SAID CHARCOAL AS A CARRIER AND IMPREGNATING SAID CARRIER WITH AT LEAST ONE COMPOUND SELECTED FROM THE GROUP CONSISTING OF PYRIDINE, N-ETHYL MORPHOLINE, BETA PICOLINE AND GAMMA PICOLINE IN AN AMOUNT WHICH WEIGHS NOT LESS THAN 1/10 OF 1% NOR MORE THAN 6% AS MUCH AS THE CHARCOAL.
Claim 2
Independent Claim
69 words
A METHOD OF RENDERING POROUS ACTIVATED CHARCOAL ADAPTED TO PROVIDE LONGER AND BETTER PROTECTION AGAINST CYANOGEN CHLORIDE WHICH CONSISTS IN USING SAID CHARCOAL AS A CARRIER AND IMPREGNATING SAID CARRIER WITH AT LEAST ONE COMPOUND SELECTED FROM THE GROUP CONSISTING OF PYRIDINE, N-ETHYL MORPHOLINE, BETA PICOLINE AND GAMMA PICOLINE IN AN AMOUNT WHICH WEIGHS NOT LESS THAN 1/10 OF 1% NOR MORE THAN 6% AS MUCH AS THE CHARCOAL.
Claim 3
Dependent Claim
41 words
A GAS CANISTER ABSORBENT CONSISTING OF COPPER COMPOUND IMPREGNATED ACTIVATED CHARCOAL CONTAINING BY WEIGHT NOT LESS THAN 1/10 OF 1% OR MORE THAN 6% OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF PYRIDINE, N-ETHYL MORPHOLINE BETA PICOLINE AND GAMMA PICOLINE.
Claim 4
Dependent Claim
41 words
A GAS CANISTER ABSORBENT CONSISTING OF COPPER COMPOUND IMPREGNATED ACTIVATED CHARCOAL CONTAINING BY WEIGHT NOT LESS THAN 1/10 OF 1% OR MORE THAN 6% OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF PYRIDINE, N-ETHYL MORPHOLINE BETA PICOLINE AND GAMMA PICOLINE.
References Cited (Backward Citations)
US1519470A
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US1520437A
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US1792939A
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US1956585A
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US2029959A
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US2523875A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-06 | 1964-06-06 | 1964-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-06 | 1968-06-06 | 1968-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-06 | 1972-06-06 | 1972-12-06 | $7700.00 | Window Closed / Lapsed |