US3273033A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multidielectric thin film capacitors
Assignee: Northrop Grumman Guidance and Electronics Co Inc
•
Filing: 1963-08-29
•
Granted: 1966-09-13
•
Expires: 1983-08-29
Abstract
No abstract record available.
Inventors
- 👤 Rossmeisl Richard Alan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:17
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/38; H01G4/385; Y; Y10; Y10T; Y10T29/00; Y10T29/43; Y10T29/435; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49124; Y10T29/49155
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A CAPACITOR DEPOSITED ON A THIN FILM CIRCUIT SUBSTRATE COMPRISING A PAIR OF SUBSTANTIALLY PARALLEL METALLIC PLATES, AND A DIELECTRIC INTERPOSED BETWEEN SAID PLATES, SAID DIELECTRIC INCLUDING A FIRST FILM OF VAPOR DEPOSITED MATERIAL HAVING A SELECTED LOW EVAPORATION TEMPERATURE AND A SELECTED DIELECTRIC CONSTANT TO IMPART A PREDETERMINED CAPACITANCE TO THE CAPACITOR, AND A SECOND FILM OF VAPOR DEPOSITED MATERIAL HAVING A SELECTED EVAPORATION TEMPERATURE SUBSTANTIALLY HIGHER THAN THAT OF SAID FIRST FILM AND A LEAKAGE CHARACTERISTIC SUBSTANTIALLY LOWER THAN THE LEAKAGE CHARACTERISTIC OF SAID FIRST FILM BEING APPROXIMATELY ONE-SEVENTH THE THICKNESS OF THE FIRST FILM OF VAPOR DEPOSITED MATERIAL.
Claim 2
Independent Claim
116 words
A METHOD FOR FABRICATING THIN FILM CIRCUIT CAPACITORS HAVING A SELECTED LOW LEAKAGE CHARACTERISTIC AND A PREDETERMINED THICKNESS COMPRISING THE STEPS OF DEPOSITING A FIRST METALLIC THIN FILM ON A THIN GLASS SUBSTRATE, VAPOR DEPOSITING A FIRST THIN FILM LAYER OF A FIRST DIELECTRIC MATERIAL HAVING CHARACTERISTICS SELECTED TO FURNISH A PREDETERMINED DIELECTRIC CONSTANT TO A SELECTED THICKNESS ON SAID FIRST METALLIC FILM, VAPOR DEPOSITING A SECOND THIN FILM LAYER OF A SECOND DIELECTRIC MATERIAL HAVING A LEAKAGE CHARACTERISTIC SUBSTANTIALLY LOWER THAN THAT OF SAID FIRST DIELECTRIC MATERIAL TO A THICKNESS OF APPROXIMATELY ONE-SEVENTH OR LESS THAT OF SAID FIRST LAYER, AND DEPOSITING A SECOND METALLIC THIN FILM TO COVER SAID FILM OF SECOND DIELECTRIC MATERIAL.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-12 | 1970-03-14 | 1970-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-12 | 1974-03-14 | 1974-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-12 | 1978-03-14 | 1978-09-13 | $7700.00 | Window Closed / Lapsed |