Patent US3100158A successfully refreshed from Google Patents.
US3100158A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods for obtaining films of magnetic spinel crystals on substrates
Assignee: RCA Corp
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Filing: 1960-11-02
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Granted: 1963-08-06
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Expires: 1980-11-02
Abstract
No abstract record available.
Inventors
- 👤 Henry P Lemaire
- 👤 William J Croft
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:45
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/05; C23C22/60; C23C22/62; H; H01; H01F; H01F41/00; H01F41/14; H01F41/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
A METHOD FOR PREPARING A CONTINUOUS FILM OF CRYSTALS HAVING A SPINAL STRUCTURE COMPRISING PREPARING AN AQUEOUS SUPENSION CONTAINING BIVALENT IONS OF AT LEAST ONE BIVALENT METAL, WHEREIN AT LEAST A MAJOR PROPORTION LOF SAID BIVALENT METAL IONS ARE FERROUS IONS, AND A STRONG BASE IN AN AMOUNT SUCH THAT THE MOLAR RATIO OF HYDROXYL IONS TO BIVALENT METAL IONS IS LESS THAN 2 TO 1; ADJUSTING THE TEMPERATURE OF SAID SUSPENSION TO A TEMPERATURE BETWEEN ABOUT 50* AND 100*C., BUBBLING AIR THROUGH SAID SUSPENSION, AND THEN CIRCULATING SAID SUSPENSION INTO CONTACT WITH THE SURFACE OF A SMOOTH, NONPOROUS SUBSTRATE MAINTAINED AT A TEMPERATURE A FEW DEGREES CENTIGRADE HIGHER THAN SAID SUSPENSION.
Claim 2
Independent Claim
112 words
A METHOD FOR PREPARING A CONTINUOUS FILM OF CRYSTALS HAVING A SPINAL STRUCTURE COMPRISING PREPARING AN AQUEOUS SUPENSION CONTAINING BIVALENT IONS OF AT LEAST ONE BIVALENT METAL, WHEREIN AT LEAST A MAJOR PROPORTION LOF SAID BIVALENT METAL IONS ARE FERROUS IONS, AND A STRONG BASE IN AN AMOUNT SUCH THAT THE MOLAR RATIO OF HYDROXYL IONS TO BIVALENT METAL IONS IS LESS THAN 2 TO 1; ADJUSTING THE TEMPERATURE OF SAID SUSPENSION TO A TEMPERATURE BETWEEN ABOUT 50* AND 100*C., BUBBLING AIR THROUGH SAID SUSPENSION, AND THEN CIRCULATING SAID SUSPENSION INTO CONTACT WITH THE SURFACE OF A SMOOTH, NONPOROUS SUBSTRATE MAINTAINED AT A TEMPERATURE A FEW DEGREES CENTIGRADE HIGHER THAN SAID SUSPENSION.
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) | 1966-08-05 | 1967-02-04 | 1967-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-05 | 1971-02-04 | 1971-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-05 | 1975-02-04 | 1975-08-06 | $7700.00 | Window Closed / Lapsed |