US2675745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protection of dispersed asbestos
Assignee: —
•
Filing: —
•
Granted: 1954-04-20
•
Expires: 1971-04-20
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:52
CPC Classifications
C; C04; C04B; C04B30/00; C04B30/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A METHOD WHICH COMPRISES FORMING A FIBROUS ASBESTOS WEB FROM AN AQUEOUS ALKALINE COLLOIDAL DISPERSION OF INDIVIDUALIZED CHRYSOTILE ASBESTOS FIBERS CONTAINING ORGAINC CHRYSOTILE ASBESTOS COLLOIDIZING AGENT BOTH ADSORBED ON THE FIBERS AND IN THE AQUEOUS PHASE MAINTAINING SAID DISPERSION, UPON AN ENDLESS CONTINUOUSLY MOVING FORAMINATED SURFACE, CONTINUOUSLY STRIPPING THE FORMED WEB THEREFROM, AND WASHING SAID SURFACE, AFTER REMOVAL OF THE WEB, WITH AN AQUEOUS DISPERSIONMAINTAINING SOLUTION OF ASBESTOS COLLOIDIZING AGENT.
Claim 2
Independent Claim
70 words
A METHOD WHICH COMPRISES FORMING A FIBROUS ASBESTOS WEB FROM AN AQUEOUS ALKALINE COLLOIDAL DISPERSION OF INDIVIDUALIZED CHRYSOTILE ASBESTOS FIBERS CONTAINING ORGAINC CHRYSOTILE ASBESTOS COLLOIDIZING AGENT BOTH ADSORBED ON THE FIBERS AND IN THE AQUEOUS PHASE MAINTAINING SAID DISPERSION, UPON AN ENDLESS CONTINUOUSLY MOVING FORAMINATED SURFACE, CONTINUOUSLY STRIPPING THE FORMED WEB THEREFROM, AND WASHING SAID SURFACE, AFTER REMOVAL OF THE WEB, WITH AN AQUEOUS DISPERSIONMAINTAINING SOLUTION OF ASBESTOS COLLOIDIZING AGENT.
References Cited (Backward Citations)
US1302313A
Cited
US1907616A
Cited
US2068219A
Cited
GB481705A
Cited
US2220386A
Cited
US2182274A
Cited
US2217005A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-19 | 1957-10-19 | 1958-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-19 | 1961-10-19 | 1962-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-19 | 1965-10-19 | 1966-04-20 | $7700.00 | Window Closed / Lapsed |