US3761860A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Printed circuit resistor
Assignee: Alps Alpine Co Ltd
•
Filing: 1970-05-20
•
Granted: 1973-09-25
•
Expires: 1990-05-20
Abstract
Abstract A printed circuit resistor is formed by applying resistive paste between two conducting areas and forming an oxidation protecting film over the exposed surface of the resistive material. The conducting areas are so shaped that the thickness of the resistive layer is substantially uniform throughout.
Inventors
- 👤 Y Kamijo
- 👤 M Miyajima
- 👤 S Ogasawara
- 👤 H Aizawa
- 👤 S Igarashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:11
CPC Classifications
H; H01; H01C; H01C1/00; H01C1/14; H01C17/00; H01C17/003; H05; H05K; H05K1/00; H05K1/16; H05K1/167; H05K1/02; H05K1/09; H05K1/092; H05K1/095; H05K1/165; H05K2201/00; H05K2201/03; H05K2201/0332; H05K2201/0335; H05K2201/035; H05K2201/09; H05K2201/09209; H05K2201/09654; H05K2201/098; H05K2201/09818; H05K2201/09881; H05K2203/00; H05K2203/05; H05K2203/0562; H05K2203/0577; H05K2203/14; H05K2203/1453; H05K3/00; H05K3/02; H05K3/06; H05K3/061; H05K3/064; H05K3/22; H05K3/24; H05K3/244; H05K3/28; H05K3/38; H05K3/386
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
14 words
The resistor of claiM 1, in which said protecting film is an epoxy resin.
Claim 2
Dependent Claim
28 words
The resistor of claim 2, in which said resistive material connecting means comprises a strip of conducting paint extending from each of said electrodes to said resistive material.
Claim 3
Dependent Claim
71 words
In a printed resistor of the type formed on a printed circuit board in which a pair of electrodes are formed on one surface of said board and a resistive layer is formed on said board and operatively connected to each of the electrodes, the improvement which comprises; said electrodes having end sections which incline downward towards said board so that the thickness of said resistive layer is substantially uniform throughout.
Claim 4
Dependent Claim
83 words
A printed resistor of the type formed on one surface of a printed circuit board, said resistor comprising a pair of electrodes formed on and extending up from said board surface, and insulating layer on said board and extending between said electrodes, the upper surface of said insulator layer lying in a substantially common plane with the upper surfaces of said electrodes, and a resistive layer of substantially uniform thickness formed on said plane over said insulating layer and extending between said electrodes.
References Cited (Backward Citations)
US3067310A
Cited
US3310711A
Cited
US3386165A
Cited
US3206702A
Cited
US3360688A
Cited
US3405381A
Cited
US3411122A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-24 | 1977-03-26 | 1977-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-24 | 1981-03-26 | 1981-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-24 | 1985-03-26 | 1985-09-25 | $7700.00 | Window Closed / Lapsed |