US3380156A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of fabricating thin film resistors
Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1965-11-15
•
Granted: 1968-04-30
•
Expires: 1985-11-15
Abstract
No abstract record available.
Inventors
- 👤 Douglas E Lood
- 👤 Rueben S Spriggs
- 👤 John L Rogers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:04
CPC Classifications
H; H01; H01C; H01C7/00; H01B; H01B1/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49099
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
A METHOD OF FABRICATING AN ELECTRICALLY RESISTIVE MESH FILM, COMPRISING: PRODUCING A MULTIPLICITY OF CLOSELY SPACED UNEONNECTED ISLANDS OF OXIDIZABLE METAL ON AN ELECTRICALLY INSULATIVE SUBSTRATE; OXIDIZING THE TOP AND SIDE SURFACES OF SAID METAL ISLANDS TO RENDER THE SURFACES ELECTRICALLY INSULATIVE AND TO INSULATE THE ISLANDS FROM EACH OTHER;
Claim 2
Independent Claim
50 words
A METHOD OF FABRICATING AN ELECTRICALLY RESISTIVE MESH FILM, COMPRISING: PRODUCING A MULTIPLICITY OF CLOSELY SPACED UNEONNECTED ISLANDS OF OXIDIZABLE METAL ON AN ELECTRICALLY INSULATIVE SUBSTRATE; OXIDIZING THE TOP AND SIDE SURFACES OF SAID METAL ISLANDS TO RENDER THE SURFACES ELECTRICALLY INSULATIVE AND TO INSULATE THE ISLANDS FROM EACH OTHER;
References Cited (Backward Citations)
US2244365A
Cited
US2168259A
Cited
US2296616A
Cited
US2434931A
Cited
US2588019A
Cited
US2745772A
Cited
US3056937A
Cited
US2728693A
Cited
US2883576A
Cited
US2976188A
Cited
US3205555A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-30 | 1971-10-30 | 1972-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-30 | 1975-10-30 | 1976-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-30 | 1979-10-30 | 1980-04-30 | $7700.00 | Window Closed / Lapsed |