US3485758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making fluorescent magnetic particles
Assignee: Magnaflux Corp
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Filing: 1967-06-27
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Granted: 1969-12-23
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Expires: 1987-06-27
Abstract
No abstract record available.
Inventors
- 👤 James S Borucki
- 👤 Paul Kenneth Borrows
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:02
CPC Classifications
H; H01; H01F; H01F1/00; H01F1/01; H01F1/03; H01F1/12; H01F1/34; H01F1/36; C; C09; C09K; C09K11/00; C09K11/02; C09K11/025; C09K11/06; G; G01; G01N; G01N27/00; G01N27/72; G01N27/82; G01N27/83; G01N27/84; Y; Y10; Y10S; Y10S252/00; Y10S252/96; Y10S428/00; Y10S428/90
Claims Analysis
Total Claims: 0
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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) | 1972-12-22 | 1973-06-23 | 1973-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-22 | 1977-06-23 | 1977-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-22 | 1981-06-23 | 1981-12-23 | $7700.00 | Window Closed / Lapsed |