Patent US2652325A successfully refreshed from Google Patents.
US2652325A
Expired / Lapsed
US
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Asbestos dispersions
Assignee: Raybestos Manhattan Inc
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Filing: 1952-04-01
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Granted: 1953-09-15
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Expires: 1972-04-01
Abstract
No abstract record available.
Inventors
- 👤 Izador J Novak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:05
CPC Classifications
C; C04; C04B; C04B30/00; C04B30/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
A METHOD FOR CONTROLLED REVERSION OF A COLLOIDAL DISPERSION OF CHRYSOTILE ASBESTOS FIBERS IN AN AQUEOUS VEHICLE FORMED WITH A WATER SOLUBLE FATTY ACID SOAP AS THE ASBESTOS DISPERSING AGENT, WHICH COMPRISES ADDING THERETO A WATER SOLUBLE ALKALINE MATERIAL TO RAISE THE PH OF THE DISPERSION ABOUT 0.5 TO ABOUT 1.5 PH NUMBERS.
Claim 2
Independent Claim
53 words
A METHOD FOR CONTROLLED REVERSION OF A COLLOIDAL DISPERSION OF CHRYSOTILE ASBESTOS FIBERS IN AN AQUEOUS VEHICLE FORMED WITH A WATER SOLUBLE FATTY ACID SOAP AS THE ASBESTOS DISPERSING AGENT, WHICH COMPRISES ADDING THERETO A WATER SOLUBLE ALKALINE MATERIAL TO RAISE THE PH OF THE DISPERSION ABOUT 0.5 TO ABOUT 1.5 PH NUMBERS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-14 | 1957-03-16 | 1957-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-14 | 1961-03-16 | 1961-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-14 | 1965-03-16 | 1965-09-15 | $7700.00 | Window Closed / Lapsed |