US3239441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for electrolytic production of printed circuits
Assignee: MAROSI PREC PRODUCTS CO Inc
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Filing: 1964-03-19
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Granted: 1966-03-08
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Expires: 1984-03-19
Abstract
No abstract record available.
Inventors
- 👤 Stephen L Marosi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:23
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/22; H05K3/24; H05K3/243; C; C25; C25D; C25D5/00; C25D5/02; C25F; C25F3/00; C25F3/02; C25F3/14; C25F7/00; H05K3/0002; H05K3/02; H05K3/06; H05K3/07; H05K3/241; H05K2201/00; H05K2201/03; H05K2201/0332; H05K2201/0364; H05K2201/0367; H05K2201/09; H05K2201/09209; H05K2201/09654; H05K2201/09736; H05K2201/098; H05K2203/00; H05K2203/01; H05K2203/0104; H05K2203/0117; H05K2203/05; H05K2203/0548; H05K2203/0557; H05K2203/15; H05K2203/1545; H05K3/10; H05K3/108; H05K3/40; H05K3/4007; H05K3/46; H05K3/4644; H05K3/4647
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
183 words
THE METHOD OF MAKING ELECTROCONDUCTIVE PATTERNS OF THE TYPE OF FLAT PRINTED CIRCUIT MEMBERS FORMED OF METAL SEGMENTS MOUNTED ON AN INSULATOR WHICH COMPRISES, FORMING A MASTER BY PLACING INSULATING MATERIAL IN THE CONFIGURATION OF THE DESIRED METAL SEGMENTS, SOM OF WHICH ARE ISOLATED FROM OTHERS, ON A METAL MEMBER TO DEFINE A SURFACE OF THE MEMBER HAVING BOTH METAL AND INSULATING AREAS EXPOSED, PLACING THE METAL SURFACE OF A METAL-CLAD INSULATOR CLOSELY ADJACENT BUT SPACED FROM SAID SURFACE OF THE MASTER, EVEN IN THE AREAS OF SAID SURFACES WHICH ARE CLOSEST EACH OTHER, TO FORM A CONTINUOUS OPEN PASSAGE BETWEEN THE ENTIRE SAID AREAS CLOSESTEACH OTHER, CONNECTING A DIRECT CURRENT SOURCE BETWEEN THE METAL MASTER MEMBER AND SAID METAL SURFACE WITH THE POSITIVE AND NEGATIVE TERMINALS OF THE SOURCE RESPECTIVELY CONNECTED TO THE METAL SURFACE AND THE METAL MEMBER, AND CONTINUOUSLY FORCING A STEAM OF ELECTROLYTE THROUGH SAID PASSAGE TO DEPLATE THE METAL LAYER OF THE METALCLAD INSULATOR UNTIL THAT LAYER IS REMOVED DOWN TO THE INSULATING LAYER, IN ALL BUT THE AREAS CORRESPONDING TO THE INSULATING MATERIAL CONFIGURATION ON THE MASTER.
Claim 2
Independent Claim
183 words
THE METHOD OF MAKING ELECTROCONDUCTIVE PATTERNS OF THE TYPE OF FLAT PRINTED CIRCUIT MEMBERS FORMED OF METAL SEGMENTS MOUNTED ON AN INSULATOR WHICH COMPRISES, FORMING A MASTER BY PLACING INSULATING MATERIAL IN THE CONFIGURATION OF THE DESIRED METAL SEGMENTS, SOM OF WHICH ARE ISOLATED FROM OTHERS, ON A METAL MEMBER TO DEFINE A SURFACE OF THE MEMBER HAVING BOTH METAL AND INSULATING AREAS EXPOSED, PLACING THE METAL SURFACE OF A METAL-CLAD INSULATOR CLOSELY ADJACENT BUT SPACED FROM SAID SURFACE OF THE MASTER, EVEN IN THE AREAS OF SAID SURFACES WHICH ARE CLOSEST EACH OTHER, TO FORM A CONTINUOUS OPEN PASSAGE BETWEEN THE ENTIRE SAID AREAS CLOSESTEACH OTHER, CONNECTING A DIRECT CURRENT SOURCE BETWEEN THE METAL MASTER MEMBER AND SAID METAL SURFACE WITH THE POSITIVE AND NEGATIVE TERMINALS OF THE SOURCE RESPECTIVELY CONNECTED TO THE METAL SURFACE AND THE METAL MEMBER, AND CONTINUOUSLY FORCING A STEAM OF ELECTROLYTE THROUGH SAID PASSAGE TO DEPLATE THE METAL LAYER OF THE METALCLAD INSULATOR UNTIL THAT LAYER IS REMOVED DOWN TO THE INSULATING LAYER, IN ALL BUT THE AREAS CORRESPONDING TO THE INSULATING MATERIAL CONFIGURATION ON THE MASTER.
Claim 3
Dependent Claim
128 words
APPARATUS FOR MANUFACTURE OF ELECTROCONDUCTIVE PATTERNS OF THE TYPE OF PRINTED CIRCUIT MEMBERS FORMED OF METAL SEGMENTS MOUNTED ON AN INSULATOR FROM FLAT SHEETS OF METAL-CLAD INSULATING MATERIAL, COMPRISING A METAL MASTER HAVING INSULATING MATERIAL THEREON IN THE CONFIGURATION OF THE DESIRED METAL SEGMENTS, SOME OF WHICH ARE ISOLATED FROM THE OTHERS, MEANS FOR POSITIONING THE METAL-CLAD SHEETS ADJACENT BUT CLOSELY SPACED FROM THE MASTER TO DEFINE AN OPEN PASSAGE THEREBETWEEN, MEANS FOR SUPPLYING A DIRECT CURRENT VOLTAGE BETWEEN THE MASTER AND THE METAL SURFACE OF THE SHEETS WITH THE MASTER NEGATIVE WITH RESPECT TO SAID METAL SURFACE, AND MEANS FOR CONTINUOUSLY FORCING LIQUID ELECTROLYTE THROUGH SAID PASSAGE TO CAUSE ELECTROLYTIC DEPLATING OF THE METAL OF SUCH SHEETS EXCEPT IN AREAS OPPOSITE THE INSULATING MATERAL ON THE MASTER.
Claim 4
Dependent Claim
128 words
APPARATUS FOR MANUFACTURE OF ELECTROCONDUCTIVE PATTERNS OF THE TYPE OF PRINTED CIRCUIT MEMBERS FORMED OF METAL SEGMENTS MOUNTED ON AN INSULATOR FROM FLAT SHEETS OF METAL-CLAD INSULATING MATERIAL, COMPRISING A METAL MASTER HAVING INSULATING MATERIAL THEREON IN THE CONFIGURATION OF THE DESIRED METAL SEGMENTS, SOME OF WHICH ARE ISOLATED FROM THE OTHERS, MEANS FOR POSITIONING THE METAL-CLAD SHEETS ADJACENT BUT CLOSELY SPACED FROM THE MASTER TO DEFINE AN OPEN PASSAGE THEREBETWEEN, MEANS FOR SUPPLYING A DIRECT CURRENT VOLTAGE BETWEEN THE MASTER AND THE METAL SURFACE OF THE SHEETS WITH THE MASTER NEGATIVE WITH RESPECT TO SAID METAL SURFACE, AND MEANS FOR CONTINUOUSLY FORCING LIQUID ELECTROLYTE THROUGH SAID PASSAGE TO CAUSE ELECTROLYTIC DEPLATING OF THE METAL OF SUCH SHEETS EXCEPT IN AREAS OPPOSITE THE INSULATING MATERAL ON THE MASTER.
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) | 1969-03-07 | 1969-09-06 | 1970-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-07 | 1973-09-06 | 1974-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-07 | 1977-09-06 | 1978-03-08 | $7700.00 | Window Closed / Lapsed |