US3141729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gels and method of making
Assignee: RTX Corp
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Filing: 1960-07-11
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Granted: 1964-07-21
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Expires: 1980-07-11
Abstract
No abstract record available.
Inventors
- 👤 Richard G Clarke
- 👤 Richard H Groth
- 👤 Edward J Duzak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:37
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
A REGENERABLE ABSORBENT FOR CARBON DIOXIDE GAS HAVING THE PROPERTY OF BEING ABLE TO READILY ABSORB AND DESORB CARBON DIOXIDE WHICH COMPRISES A COGEL OF METAL OXIDES OF A FIRST METAL SELECTED FROM THE GROUP CONSISTING OF LITHIUM AND THE DIVALENT METALS ZINC, IRON, NICKEL, COPPER, COBALT, MANGANESE, MAGNESIUM, CALCIUM, BARIUM, AND CADMIUM, INCLUDING MIXTURES OF THE FOREGOING, AND A SECOND METAL SELECTED FROM THE GROUP CONSISTING OF THE TERVALENT METALS ALUMINUM, IRON, CHROMIUM, INCLUDING MIXTURES OF THE FOREGOING, THE MOLE PERCENT RATIO OF ONE OF SAID METALS TO THE OTHER METAL BEING IN THE RANGE OF FROM ABOUT 10 TO 70 AND 90 TO 30 PERCENT, RESPECTIVELY, AND WHICH HAS BEEN PREPARED BY CO-PRECIPITATION FROM A SOLUTION COMPRISING A CARBONATE WHICH IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL CARBONATE AND AMMONIUM CARBONATE, FOLLOWED BY DRYING.
Claim 2
Dependent Claim
140 words
A REGENERABLE ABSORBENT FOR CARBON DIOXIDE GAS HAVING THE PROPERTY OF BEING ABLE TO READILY ABSORB AND DESORB CARBON DIOXIDE WHICH COMPRISES A COGEL OF METAL OXIDES OF A FIRST METAL SELECTED FROM THE GROUP CONSISTING OF LITHIUM AND THE DIVALENT METALS ZINC, IRON, NICKEL, COPPER, COBALT, MANGANESE, MAGNESIUM, CALCIUM, BARIUM, AND CADMIUM, INCLUDING MIXTURES OF THE FOREGOING, AND A SECOND METAL SELECTED FROM THE GROUP CONSISTING OF THE TERVALENT METALS ALUMINUM, IRON, CHROMIUM, INCLUDING MIXTURES OF THE FOREGOING, THE MOLE PERCENT RATIO OF ONE OF SAID METALS TO THE OTHER METAL BEING IN THE RANGE OF FROM ABOUT 10 TO 70 AND 90 TO 30 PERCENT, RESPECTIVELY, AND WHICH HAS BEEN PREPARED BY CO-PRECIPITATION FROM A SOLUTION COMPRISING A CARBONATE WHICH IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL CARBONATE AND AMMONIUM CARBONATE, FOLLOWED BY DRYING.
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) | 1967-07-21 | 1968-01-20 | 1968-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-21 | 1972-01-20 | 1972-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-21 | 1976-01-20 | 1976-07-21 | $7700.00 | Window Closed / Lapsed |