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Patent US3234136A successfully refreshed from Google Patents.
US3234136A
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Method for producing square loop nickel ferrous ferrite
Assignee: International Business Machines Corp
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Filing: 1962-12-26
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Granted: 1966-02-08
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Expires: 1982-12-26
Abstract
No abstract record available.
Inventors
- 👤 Ahn Junghi
- 👤 Geldermans Pieter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:57
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/26; C04B35/2666
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
25 words
A METHOD FOR PRODUCING A SQUARE LOOP NICKEL-FERROUS GERRITE FROM A MIXTURE COMPOSED OF NICKEL AND IRON OXIDES IN THE PROPORTIONS REPRESENTED BY THE FORMULA:
Claim 2
Independent Claim
25 words
A METHOD FOR PRODUCING A SQUARE LOOP NICKEL-FERROUS GERRITE FROM A MIXTURE COMPOSED OF NICKEL AND IRON OXIDES IN THE PROPORTIONS REPRESENTED BY THE FORMULA:
Claim 3
Dependent Claim
22 words
A SQUARE LOOP NICKEL-FERROUS FERRITE FORMED FROM A MIXTURE COMPOSED OF NICKEL AND IRON OXIDES IN THE PROPORTION REPRESENTED BY THE FORMULA:
Claim 4
Dependent Claim
22 words
A SQUARE LOOP NICKEL-FERROUS FERRITE FORMED FROM A MIXTURE COMPOSED OF NICKEL AND IRON OXIDES IN THE PROPORTION REPRESENTED BY THE FORMULA:
References Cited (Backward Citations)
US3078234A
Cited
US3055832A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-07 | 1969-08-09 | 1970-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-07 | 1973-08-09 | 1974-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-07 | 1977-08-09 | 1978-02-08 | $7700.00 | Window Closed / Lapsed |