Patent US4242069A successfully refreshed from Google Patents.
Patent US3170871A successfully refreshed from Google Patents.
US3170871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic filter
Assignee: Individual
•
Filing: 1960-11-22
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Granted: 1965-02-23
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Expires: 1980-11-22
Abstract
No abstract record available.
Inventors
- 👤 Moriya Saburo Miyata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:53
CPC Classifications
B; B03; B03C; B03C1/00; B03C1/02; B03C1/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A MAGNETIC FILTER LINE COMPRISING A RIGID TUBULAR CASIG OF NON MAGNETIC MATERIAL, MEANS FOR CONNECTING SAID CASING INTO A FLUID CARRYING INE, MAGNET ASSEMBLY INCLUDING A PLURLAITY OF ANNULAR PERMANENT MAGNETS AXIALLY SPACED APART ALONG THE LENGTH OF AND SURROUNDING SAID CASING; SAID MAGNETS BEING SPACED APART BY ANNULI OF NON MAGNETIC MATERIAL, A RIGID HOUSING OF NON MAGNETIC MATERIAL SURROUNDING AND ENCLOSING SAID MAGNETS, EACH OF SAID MAGNETS BEING MAGNETIZED ON THE DIAMETER OF EACH ANNULUS, AND HAVING THE AXES THE MAGNETIZATION PROGRESSIVELY ANGULARLY OFFSET RELATIVE TO EACH OTHER ALONG THE LENGTH OF SAID SERIES.
Claim 2
Dependent Claim
97 words
A MAGNETIC FILTER LINE COMPRISING A RIGID TUBULAR CASIG OF NON MAGNETIC MATERIAL, MEANS FOR CONNECTING SAID CASING INTO A FLUID CARRYING INE, MAGNET ASSEMBLY INCLUDING A PLURLAITY OF ANNULAR PERMANENT MAGNETS AXIALLY SPACED APART ALONG THE LENGTH OF AND SURROUNDING SAID CASING; SAID MAGNETS BEING SPACED APART BY ANNULI OF NON MAGNETIC MATERIAL, A RIGID HOUSING OF NON MAGNETIC MATERIAL SURROUNDING AND ENCLOSING SAID MAGNETS, EACH OF SAID MAGNETS BEING MAGNETIZED ON THE DIAMETER OF EACH ANNULUS, AND HAVING THE AXES THE MAGNETIZATION PROGRESSIVELY ANGULARLY OFFSET RELATIVE TO EACH OTHER ALONG THE LENGTH OF SAID SERIES.
References Cited (Backward Citations)
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |