US3320170A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transparent magnetic glass compositions
Assignee: Semi-Elements Inc
•
Filing: 1965-08-09
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Granted: 1967-05-16
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Expires: 1985-08-09
Abstract
No abstract record available.
Inventors
- 👤 Ronald C Vickery
- 👤 Joseph V Fisher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:29
CPC Classifications
H; H01; H01F; H01F1/00; H01F1/01; H01F1/03; H01F1/12; H01F1/34; H01F1/36; H01F1/37; C; C03; C03C; C03C3/00; C03C3/12; C03C3/14; C03C3/15; Y; Y10; Y10S; Y10S428/00; Y10S428/90
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
A GLASS COMPOSITION EXHIBITING MAGNETIC CHARACTERISTICS, CONSISTING ESSENTIALLY OF A GLASS MATRIX SELECTED FROM THE GROUP CONSISTING OF PHOSPHATE, BORATE AND FLUORIDE MATRICES, THE GLASS BEING WATER-WHITE TRANSPARENT AND CONTAINING A PARAMAGNETIC ION AT LEAST IN AN AMOUNT SUFFICIENT TO RENDER THE GLASS MAGNETICALLY SUSCEPTIBLE.
Claim 2
Dependent Claim
45 words
A GLASS COMPOSITION EXHIBITING MAGNETIC CHARACTERISTICS, CONSISTING ESSENTIALLY OF A GLASS MATRIX SELECTED FROM THE GROUP CONSISTING OF PHOSPHATE, BORATE AND FLUORIDE MATRICES, THE GLASS BEING WATER-WHITE TRANSPARENT AND CONTAINING A PARAMAGNETIC ION AT LEAST IN AN AMOUNT SUFFICIENT TO RENDER THE GLASS MAGNETICALLY SUSCEPTIBLE.
References Cited (Backward Citations)
US2805166A
Cited
US3081178A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-05-15 | 1970-11-14 | 1971-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-15 | 1974-11-14 | 1975-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-15 | 1978-11-14 | 1979-05-16 | $7700.00 | Window Closed / Lapsed |