US4825536A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for fabricating electronic circuit board
Assignee: Panasonic Holdings Corp
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Filing: 1987-10-02
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Granted: 1989-05-02
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Expires: 2007-10-02
Abstract
Abstract Fabrication of an electronic circuit board is carried out by forming a predetermined number of resistors having various resistances based on a circuit design stored in a memory on a nonconductive substrate and dividing the nonconductive substrate into discrete resistors, then mounting the discrete resistors on a circuit board and testing operation characteristic thereof; and when some resistors having resistances which are not suitable to obtain a predetermined operation characteristic exist in the above-formed resistors, the resistances are corrected, and electronic circuit board having corrected accurate electric constants is obtained; and thereby a complete electronic circuit boards are fabricated by repetition of above-mentioned respective steps.
Inventors
- 👤 Eiji Itemadani
- 👤 Shuichi Murakami
- 👤 Kazuhiro Mori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:27
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/30; H05K13/00; H05K13/08; H01; H01C; H01C17/00; H01C17/006; H01C17/06; H01C17/065; H01C17/22; H01C17/24; H01C17/242; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49004; Y10T29/49082; Y10T29/49099; Y10T29/49117; Y10T29/49124; Y10T29/4913; Y10T29/49133; Y10T29/49137; Y10T29/53; Y10T29/5313; Y10T29/53174; Y10T29/53178
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
118 words
A method for fabricating electronic circuit board comprising the steps of: storing circuit data including electric constant values of electronic parts and special arrangement of the electronic parts in an electronic circuit board in a memory, in accordance with a predetermined circuit design, making an electronic parts integrated plate having a plurality of said electronic parts arranged in a predetermined order in accordance with said stored circuit data in the memory by coating a resistivity paste on a substrate and by trimming the electronic parts formed on said substrate, dividing said electronic parts integrated plate into discrete electronic parts, and mounting said discrete electronic parts on an electronic circuit board on the basis of said stored circuit data.
Claim 2
Independent Claim
118 words
A method for fabricating electronic circuit board comprising the steps of: storing circuit data including electric constant values of electronic parts and special arrangement of the electronic parts in an electronic circuit board in a memory, in accordance with a predetermined circuit design, making an electronic parts integrated plate having a plurality of said electronic parts arranged in a predetermined order in accordance with said stored circuit data in the memory by coating a resistivity paste on a substrate and by trimming the electronic parts formed on said substrate, dividing said electronic parts integrated plate into discrete electronic parts, and mounting said discrete electronic parts on an electronic circuit board on the basis of said stored circuit data.
Claim 3
Dependent Claim
38 words
A method for fabricating electronic circuit board in accordance with claim 1, wherein said step for dividing said electronic parts integrated plate comprises a step that said electronic parts integrated plate is previously affixed on an expanding sheet.
Claim 4
Independent Claim
175 words
A method for fabricating electronic circuit board comprising the steps of: storing circuit data including electric constant values of electric parts and special arrangement of the electronic parts in an electronic circuit board in a memory, in accordance with a predetermined circuit design, making an electronic parts integrated plate having a plurality of said electronic parts arranged in a predetermined order in accordance with said stored circuit data by coating a resistivity paste on a substrate by a pattern writing machine and by trimming the electronic parts formed on said substrate, measuring said electric constant value of said electronic parts made on said substrate and issuing measurement data, correcting the operation of said pattern writing machine on the basis of said measurement data, dividing said electronic parts integrated plate into discrete electronic parts, mounting said discrete electronic parts on an electronic circuit board on the basis of said circuit data, testing operating characteristics of said electronic circuit board and issuing test data thereof, and correcting said circuit data on the basis of said test data.
Claim 5
Independent Claim
175 words
A method for fabricating electronic circuit board comprising the steps of: storing circuit data including electric constant values of electric parts and special arrangement of the electronic parts in an electronic circuit board in a memory, in accordance with a predetermined circuit design, making an electronic parts integrated plate having a plurality of said electronic parts arranged in a predetermined order in accordance with said stored circuit data by coating a resistivity paste on a substrate by a pattern writing machine and by trimming the electronic parts formed on said substrate, measuring said electric constant value of said electronic parts made on said substrate and issuing measurement data, correcting the operation of said pattern writing machine on the basis of said measurement data, dividing said electronic parts integrated plate into discrete electronic parts, mounting said discrete electronic parts on an electronic circuit board on the basis of said circuit data, testing operating characteristics of said electronic circuit board and issuing test data thereof, and correcting said circuit data on the basis of said test data.
Claim 6
Dependent Claim
38 words
A method for fabricating electronic circuit board in accordance with claim 3, wherein said step for dividing said electronic parts integrated plate comprises a step wherein said electronic parts integrated plate is previously affixed on an expanding sheet.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-05-01 | 1992-10-31 | 1993-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-01 | 1996-10-31 | 1997-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-01 | 2000-10-31 | 2001-05-02 | $7700.00 | Window Closed / Lapsed |