US2776235A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric circuit printing
Assignee: Sprague Electric Co
•
Filing: 1952-09-18
•
Granted: 1957-01-01
•
Expires: 1972-09-18
Abstract
No abstract record available.
Inventors
- 👤 David B Peck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:51
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/02; H05K3/04; H05K3/046; H05K3/10; H05K3/20; H05K3/207; H05K1/00; H05K1/02; H05K1/09; H05K1/092; H05K1/095; H05K2203/00; H05K2203/01; H05K2203/0147; H05K2203/0156; H05K2203/0195; H05K2203/05; H05K2203/0502; H05K2203/0528; H05K2203/11; H05K2203/1105; Y; Y10; Y10S; Y10S425/00; Y10S425/811
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
IN A PROCESS FOR PRINTING ELECTRIC CIRCUIT SECTIONS, THE STEPS OF APPLYING AN ADHERENT BUT DISENGAGEABLE LAYER OF LIQUEFIABLE ELECTRIC CIRCUIT MATERIAL HAVING UNIFORM ELECTRICAL CHARACTERISTICS OVER AN EXTENDED AREA OF A TEMPORARY SUPPORT OF A FILM OF POLYTETRAFLUOROETHYLENE RESIN, PLACING SUPPORTED LAYER IN CONTACT WITH A BASE ON WHICH THE CIRCUIT SECTION IS TO BE MOUNTED AND FOR WHICH THE LIQUEFIED MATERIAL HAS GRATER ADHESION, TRANSFERRING TO THE BASE SELECTED PORTIONS OF THE LAYER BY APPLYING A LIQUEFYING TOOL HAVING THE SHAPE OF THE SELECTED PORTIONS TO THE BACK OF THE TEMPORARY SUPPORT TO LIQUEFY AND DISENGAGE THESE PORTIONS OF THE LAYER FROM THE TEMPORARY SUPPORT AND TO CA USE THEM TO BECOME AFFIXED TO THE BASE.
Claim 2
Dependent Claim
118 words
IN A PROCESS FOR PRINTING ELECTRIC CIRCUIT SECTIONS, THE STEPS OF APPLYING AN ADHERENT BUT DISENGAGEABLE LAYER OF LIQUEFIABLE ELECTRIC CIRCUIT MATERIAL HAVING UNIFORM ELECTRICAL CHARACTERISTICS OVER AN EXTENDED AREA OF A TEMPORARY SUPPORT OF A FILM OF POLYTETRAFLUOROETHYLENE RESIN, PLACING SUPPORTED LAYER IN CONTACT WITH A BASE ON WHICH THE CIRCUIT SECTION IS TO BE MOUNTED AND FOR WHICH THE LIQUEFIED MATERIAL HAS GRATER ADHESION, TRANSFERRING TO THE BASE SELECTED PORTIONS OF THE LAYER BY APPLYING A LIQUEFYING TOOL HAVING THE SHAPE OF THE SELECTED PORTIONS TO THE BACK OF THE TEMPORARY SUPPORT TO LIQUEFY AND DISENGAGE THESE PORTIONS OF THE LAYER FROM THE TEMPORARY SUPPORT AND TO CA USE THEM TO BECOME AFFIXED TO THE BASE.
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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) | 1960-01-01 | 1960-07-02 | 1961-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-01 | 1964-07-02 | 1965-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-01 | 1968-07-02 | 1969-01-01 | $7700.00 | Window Closed / Lapsed |