US2661287A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aqueous asbestos dispersion and process for producing same
Assignee: EIDP Inc
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Filing: 1949-11-15
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Granted: 1953-12-01
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Expires: 1969-11-15
Abstract
No abstract record available.
Inventors
- 👤 Glen D Barbaras
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:50
CPC Classifications
C; C04; C04B; C04B20/00; C04B20/02; C04B20/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
AN AQUEOUS DISPERSION HAVING A PH OF FROM 3 TO 6 AND COMPRISING UP TO ABOUT 5% BY WEIGHT OF DISCRETE, CRYSTALLITE, CHRYSOTILE ASBESTOS FIBERS FROM 2/ TO 40 MILLIMICRONS IN DIAMETER AND, AS A DISPERSING AGENT, A DISSOLVED METAL SALT HAVING A MONOVALENT ANION AND A CATION CONTAINING A POLYVALENT METAL, THE AMOUNT OF DISPERSING AGENT BEING ENOUGH TO GIVE FROM 0.1 MILLIGRAM MOLES OF THE SALT TO 3 MILLIGRAM MOLES OF DISSOCIATED ANION PER GRAM OF ASBESTOS.
Claim 2
Dependent Claim
79 words
AN AQUEOUS DISPERSION HAVING A PH OF FROM 3 TO 6 AND COMPRISING UP TO ABOUT 5% BY WEIGHT OF DISCRETE, CRYSTALLITE, CHRYSOTILE ASBESTOS FIBERS FROM 2/ TO 40 MILLIMICRONS IN DIAMETER AND, AS A DISPERSING AGENT, A DISSOLVED METAL SALT HAVING A MONOVALENT ANION AND A CATION CONTAINING A POLYVALENT METAL, THE AMOUNT OF DISPERSING AGENT BEING ENOUGH TO GIVE FROM 0.1 MILLIGRAM MOLES OF THE SALT TO 3 MILLIGRAM MOLES OF DISSOCIATED ANION PER GRAM OF ASBESTOS.
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) | 1956-11-30 | 1957-06-01 | 1957-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-30 | 1961-06-01 | 1961-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-30 | 1965-06-01 | 1965-12-01 | $7700.00 | Window Closed / Lapsed |