US2833620A
Expired / Lapsed
US
⏱️ 0.0 years remaining
An inorganic flexible fibrous material consisting of the asbestos-like form of an alkali metal titanate and its preparation
Assignee: EIDP Inc
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Filing: 1954-09-24
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Granted: 1958-05-06
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Expires: 1974-09-24
Abstract
No abstract record available.
Inventors
- 👤 Thurman E Gier
- 👤 Paul L Salzberg
- 👤 Howard S Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:13
CPC Classifications
C; C01; C01G; C01G23/00; C01G23/003; C01G23/005; C01P; C01P2004/00; C01P2004/10; C01P2004/54; C01P2004/60; C01P2004/61; C01P2004/62; Y; Y10; Y10S; Y10S264/00; Y10S264/19
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
92 words
A METHOD FOR PREPARING AN ABSESTOS-LIKE FIBROUS WATER-INSOLUBLE ALKALI METAL TITANATE WHICH COMPRISE REACTING IN THE PRESENCE OF WATER, A WATER-SOLUBLE BASIC OXYGEN-CONTAINING ALKALI METAL COMPOUND, WHEREIN THE ALKALI METAL HAS AN ATOMIC NUMBER OF AT LEAST ELEVEN, WITH AN OXYGEN-CONTAINING TITANIUM COMPOUND IN A MOLAR RATIO OF 1:6 TO 12:1, CALCULATED AS ALKALI METAL OXIDE TO TITANIUM DIOXIDE, AT A TEMPERATURE OF AT LEAST 400*C. UNDER A PRESSURE OF AT LEAST 200 ATMOSPHERES, AND SEPARATING AS THE RESULTING PRODUCT AN ALKALI METAL TITANATE IN THE FORM OF WATER-INSOLUBLE, NON-HYDRATABLE, FLEXIBLE FIBERS.
Claim 2
Independent Claim
92 words
A METHOD FOR PREPARING AN ABSESTOS-LIKE FIBROUS WATER-INSOLUBLE ALKALI METAL TITANATE WHICH COMPRISE REACTING IN THE PRESENCE OF WATER, A WATER-SOLUBLE BASIC OXYGEN-CONTAINING ALKALI METAL COMPOUND, WHEREIN THE ALKALI METAL HAS AN ATOMIC NUMBER OF AT LEAST ELEVEN, WITH AN OXYGEN-CONTAINING TITANIUM COMPOUND IN A MOLAR RATIO OF 1:6 TO 12:1, CALCULATED AS ALKALI METAL OXIDE TO TITANIUM DIOXIDE, AT A TEMPERATURE OF AT LEAST 400*C. UNDER A PRESSURE OF AT LEAST 200 ATMOSPHERES, AND SEPARATING AS THE RESULTING PRODUCT AN ALKALI METAL TITANATE IN THE FORM OF WATER-INSOLUBLE, NON-HYDRATABLE, FLEXIBLE FIBERS.
Claim 3
Dependent Claim
76 words
AS A NEW INORGANIC FIBROUS MATERIAL, ALKALI METAL TITANATE CRYSTALLINE FIBERS EACH HAVING A RATIO OF LENGTH TO WIDTH OF AT LEAST 10:1, AND EACH BEING SUFFICIENTLY FLEXIBLE TO BE FELTED, SAID FIBERS BEING INSOLUBLE IN WATER, NOT ABSORBING WATER OF CRYSTALLIZATION TO FORM A HYDRATE, AND HVING THE GENERAL FORMULA M2O9(TIO2)N, WHEREIN M IS AN ALKALI METAL HAVING AN ATOMIC NUMBER OF AT LEAST 11 AND N HAS A VALUE OF FROM 6 TO 7.
Claim 4
Dependent Claim
76 words
AS A NEW INORGANIC FIBROUS MATERIAL, ALKALI METAL TITANATE CRYSTALLINE FIBERS EACH HAVING A RATIO OF LENGTH TO WIDTH OF AT LEAST 10:1, AND EACH BEING SUFFICIENTLY FLEXIBLE TO BE FELTED, SAID FIBERS BEING INSOLUBLE IN WATER, NOT ABSORBING WATER OF CRYSTALLIZATION TO FORM A HYDRATE, AND HVING THE GENERAL FORMULA M2O9(TIO2)N, WHEREIN M IS AN ALKALI METAL HAVING AN ATOMIC NUMBER OF AT LEAST 11 AND N HAS A VALUE OF FROM 6 TO 7.
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) | 1961-05-05 | 1961-11-04 | 1962-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-05 | 1965-11-04 | 1966-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-05 | 1969-11-04 | 1970-05-06 | $7700.00 | Window Closed / Lapsed |