US2711822A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Purification of fibrous asbestos
Assignee: Raybestos Manhattan Inc
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Filing: 1953-07-24
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Granted: 1955-06-28
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Expires: 1973-07-24
Abstract
No abstract record available.
Inventors
- 👤 Izador J Novak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 00:33
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/02; B03D1/06; B03D1/14; B03D1/1481
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
THE METHOD OF REFINING A MASS OF MILLED ASBESTOS FIBERS TO REMOVE THEREFROM RESIDUAL PARTICLES OF NATURALLY ASSOCIATED IMPURITIES, WHICH COMPRISES INTRODUCING SAID FIBERS IN AN AERATED FROTHY FLOATABLE CONDITION TO ONE END OF AND ADJACENT TO THE SURFACE OF A BODY OF AQUEOUS LIQUID AND REPEATEDLY FORCING SAID FLOATABLE FIBERS UNDER THE SURFACE OF SAID LIQUID BODY WHILE SUBJECTING THEM TO A FORWARD IMPETUS TO THE OPPOSITE END TO SUCCESSIVELY AGITATE AND DISSEMINATE THEM IN THE FORM OF A DIFFUSE TURBULENT CLOUD EXTENDED OVER A MAJOR PORTION OF THE LIQUID BODY
Claim 2
Independent Claim
92 words
THE METHOD OF REFINING A MASS OF MILLED ASBESTOS FIBERS TO REMOVE THEREFROM RESIDUAL PARTICLES OF NATURALLY ASSOCIATED IMPURITIES, WHICH COMPRISES INTRODUCING SAID FIBERS IN AN AERATED FROTHY FLOATABLE CONDITION TO ONE END OF AND ADJACENT TO THE SURFACE OF A BODY OF AQUEOUS LIQUID AND REPEATEDLY FORCING SAID FLOATABLE FIBERS UNDER THE SURFACE OF SAID LIQUID BODY WHILE SUBJECTING THEM TO A FORWARD IMPETUS TO THE OPPOSITE END TO SUCCESSIVELY AGITATE AND DISSEMINATE THEM IN THE FORM OF A DIFFUSE TURBULENT CLOUD EXTENDED OVER A MAJOR PORTION OF THE LIQUID BODY
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) | 1958-06-27 | 1958-12-27 | 1959-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-06-27 | 1962-12-27 | 1963-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-06-27 | 1966-12-27 | 1967-06-28 | $7700.00 | Window Closed / Lapsed |