US3279945A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for dampening vibrations in ferrite cores and products
Assignee: International Business Machines Corp
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Filing: 1963-06-28
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Granted: 1966-10-18
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Expires: 1983-06-28
Abstract
No abstract record available.
Inventors
- 👤 Robert S Haines
- 👤 Thomas J Walsh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:00
CPC Classifications
H; H01; H01F; H01F17/00; H01F17/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A METHOD FOR DAMPENING THE VIBRATIONS CAUSED BY MAGNETOSTRICTIVE RESONANCE IN A FERRITE MAGNETIC CORE COMPRISING COATING SAID CORE WITH A SOLUTION OF 2,2'' BIS (P-HYDROXYPHENYL PROPANE)-EPICHLORONHYDRIN POLYMER AND CHLORINATED BIPHENYL DISSOLVED IN AN A VOLATILE ORGANIC SOLVENT AND EVAPORATING SAID SOLVENT TO DEPOSIT AN UNCURED FILM OF SAID POLYMERIC AND SAID CHLORINATED BIPHENYL ON THE SURFACE OF SAID FERRITE CORE, SAID FILM COMPRISING FROM 80% TO 97% BY WEIGHT OF SAID POLYMER AND FROM 3% TO 20% BY WEIGHT OF SAID CHLORINATED BIPHENYL.
Claim 2
Independent Claim
84 words
A METHOD FOR DAMPENING THE VIBRATIONS CAUSED BY MAGNETOSTRICTIVE RESONANCE IN A FERRITE MAGNETIC CORE COMPRISING COATING SAID CORE WITH A SOLUTION OF 2,2'' BIS (P-HYDROXYPHENYL PROPANE)-EPICHLORONHYDRIN POLYMER AND CHLORINATED BIPHENYL DISSOLVED IN AN A VOLATILE ORGANIC SOLVENT AND EVAPORATING SAID SOLVENT TO DEPOSIT AN UNCURED FILM OF SAID POLYMERIC AND SAID CHLORINATED BIPHENYL ON THE SURFACE OF SAID FERRITE CORE, SAID FILM COMPRISING FROM 80% TO 97% BY WEIGHT OF SAID POLYMER AND FROM 3% TO 20% BY WEIGHT OF SAID CHLORINATED BIPHENYL.
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) | 1969-10-17 | 1970-04-18 | 1970-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-17 | 1974-04-18 | 1974-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-17 | 1978-04-18 | 1978-10-18 | $7700.00 | Window Closed / Lapsed |