US2825670A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Permanent magnet and process for making same
Assignee: Individual
•
Filing: 1952-08-21
•
Granted: 1958-03-04
•
Expires: 1972-08-21
Abstract
No abstract record available.
Inventors
- 👤 Adams Edmond
- 👤 William M Hubbard
- 👤 Albert M Syeles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:58
CPC Classifications
C; C22; C22C; C22C28/00; H; H01; H01F; H01F1/00; H01F1/01; H01F1/03; H01F1/032; H01F1/04; H01F1/06; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/928
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
THE METHOD OF MAKING A PERMANENT MAGNET COMPRISING FORMING A MASS CONSISTING OF SUBSTANTIALLY ONLY BISMUTH AND PARTICLES OF THE COMPOUND MANGANESE BISMUTHIDE, COMMINUATING THE MASS, COMPACTING THE COMMINUATED MASS IN AN ORIENTING MAGNETIC FIELD AT A TEMPERATURE ABOVE THE MELTING POINT OF BISMUTH AND BELOW THE CURIE POINT OF SAID COMPOUND WHEREBY THE MANGANESE BISMUTHIDE PARTICLES ARE SUSPENDED IN A FLUID MEDIUM CONSTITUTED OF SUBSTANTIALLY ONLY BISMUTH THEREBY TO FACILITATE THE INFLUENCING EFFECT OF THE ORIENTING MAGNETIC FIELD ON SAID PARTICLES, COOLING THE RESULTING COMPACT TO SOLIDIFY THE BISMUTH TO FORM AN AGGLOMERATE IN WHICH SUBSTANTIALLY ONLY THE SOLIDIFIED BISMUTH CONSTITUTES THE BINDER FOR THE MANGANESE BISMUTHIDE PARTICLES, AND SUBMITTING THE AGGLOMERATE TO A MAGNETIZING FIELD.
Claim 2
Independent Claim
117 words
THE METHOD OF MAKING A PERMANENT MAGNET COMPRISING FORMING A MASS CONSISTING OF SUBSTANTIALLY ONLY BISMUTH AND PARTICLES OF THE COMPOUND MANGANESE BISMUTHIDE, COMMINUATING THE MASS, COMPACTING THE COMMINUATED MASS IN AN ORIENTING MAGNETIC FIELD AT A TEMPERATURE ABOVE THE MELTING POINT OF BISMUTH AND BELOW THE CURIE POINT OF SAID COMPOUND WHEREBY THE MANGANESE BISMUTHIDE PARTICLES ARE SUSPENDED IN A FLUID MEDIUM CONSTITUTED OF SUBSTANTIALLY ONLY BISMUTH THEREBY TO FACILITATE THE INFLUENCING EFFECT OF THE ORIENTING MAGNETIC FIELD ON SAID PARTICLES, COOLING THE RESULTING COMPACT TO SOLIDIFY THE BISMUTH TO FORM AN AGGLOMERATE IN WHICH SUBSTANTIALLY ONLY THE SOLIDIFIED BISMUTH CONSTITUTES THE BINDER FOR THE MANGANESE BISMUTHIDE PARTICLES, AND SUBMITTING THE AGGLOMERATE TO A MAGNETIZING FIELD.
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) | 1961-03-03 | 1961-09-02 | 1962-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-03 | 1965-09-02 | 1966-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-03 | 1969-09-02 | 1970-03-04 | $7700.00 | Window Closed / Lapsed |