Patent US3592708A successfully refreshed from Google Patents.
US3592708A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making raster pattern magnetoresistors
Assignee: United States Department of the Navy
•
Filing: 1968-07-26
•
Granted: 1971-07-13
•
Expires: 1988-07-26
Abstract
Abstract A TECHNIQUE FOR CREATING A RASTER PATTERN MAGNETORESISTOR DEVICE FROM AN ELECTRON BEAM-RECRYSTALLIZED INSB FILM BY EMPLOYING A PHOTOLITHORGAPHIC PROCESS TO ETCH OUT OF THE INSB FILM A SUITABLE PATTERN ON WHICH MICRONSIZE INDIUM OR COPPER STRIPES ARE LATER ETCHED OUT OF A SUPERPOSED METALLIC FILM APPLIED ON THE INSB BY VACUUM DEPOSITION. THE RASTER PATTERN MAGNETORESISTOR DEVICE IS A REISTOR, WHOSE INITIAL RESISTANCE IN ZERO MAGNETIC FIELD IS BETWEEN 10 AND 1000 OHMS, AND WHOSE RESISTANCE INCREASES WITH AN APPLIED MAGNETIC FIELD, REACHING A VALUE GREATER THAN A FACTOR OF 10 OF THE INITIAL RESISTANCE IN A MAGNETIC FIELD OF 10K OE.
Inventors
- 👤 David A Collins
- 👤 Harry H Wieder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:22
CPC Classifications
H; H10; H10N; H10N50/00; H10N50/10; Y; Y10; Y10S; Y10S438/00; Y10S438/93
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-12 | 1975-01-11 | 1975-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-12 | 1979-01-11 | 1979-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-12 | 1983-01-11 | 1983-07-13 | $7700.00 | Window Closed / Lapsed |