US3226274A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing electrodes of variable condenser
Assignee: Mitsumi Electric Co Ltd
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Filing: 1961-09-25
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Granted: 1965-12-28
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Expires: 1981-09-25
Abstract
No abstract record available.
Inventors
- 👤 Kohno Tomoyuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:22
CPC Classifications
B; B21; B21D; B21D28/00; B21D28/02; B21D28/06; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1056
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
174 words
THE METHOD OF FORMING A METAL PLATE OF PREDETERMINED CONFIGURATION WITH BOTH SIDES COVERED BY INSULATION EXCEPT FOR A PREDETERMINED AREA WHICH IS EXPOSED, SAID METHOD COMPRISING THE STEPS OF: PUNCHING A FIRST SERIES OF GUIDE HOLES ALONG AN EDGE PORTION OF A METAL STRIP; PUNCHING A SECOND SERIES OF GUIDE HOLES ALONG AN EDGE PORTION OF EACH OF TWO SEPARATE STRIPS OF PLASTIC FILM WITH THE SAME PITCH AS SAID FIRST-NAMED SERIES OF GUIDE HOLES; PUNCHING A THIRD SERIES OF HOLES IN AT LEAST ONE OF SAID STRIPS OF FILM WITH THE SAME PITCH AS SAID GUIDE HOLES, THE HOLES OF SAID THIRD SERIES BEING LOCATED TO PRODUCE SAID PREDETERMINED AREA OF EACH METAL PLATE WHICH IS TO BE EXPOSED; MAINTAINING ALL OF SAID GUIDE HOLES IN REGISTER; ADHERING EACH OF SAID STRIPS OF FILM TO ONE SIDE OF SAID METAL STRIP TO FORM A COMPOSITE STRIP CONSISTING OF SAID METAL STRIP SANDWICHED BETWEEN SAID STRIPS OF FILM WITH SAID GUIDE HOLES IN REGISTER; AND PUNCHING SAID METAL PLATE FROM SAID COMPOSITE STRIP.
Claim 2
Independent Claim
174 words
THE METHOD OF FORMING A METAL PLATE OF PREDETERMINED CONFIGURATION WITH BOTH SIDES COVERED BY INSULATION EXCEPT FOR A PREDETERMINED AREA WHICH IS EXPOSED, SAID METHOD COMPRISING THE STEPS OF: PUNCHING A FIRST SERIES OF GUIDE HOLES ALONG AN EDGE PORTION OF A METAL STRIP; PUNCHING A SECOND SERIES OF GUIDE HOLES ALONG AN EDGE PORTION OF EACH OF TWO SEPARATE STRIPS OF PLASTIC FILM WITH THE SAME PITCH AS SAID FIRST-NAMED SERIES OF GUIDE HOLES; PUNCHING A THIRD SERIES OF HOLES IN AT LEAST ONE OF SAID STRIPS OF FILM WITH THE SAME PITCH AS SAID GUIDE HOLES, THE HOLES OF SAID THIRD SERIES BEING LOCATED TO PRODUCE SAID PREDETERMINED AREA OF EACH METAL PLATE WHICH IS TO BE EXPOSED; MAINTAINING ALL OF SAID GUIDE HOLES IN REGISTER; ADHERING EACH OF SAID STRIPS OF FILM TO ONE SIDE OF SAID METAL STRIP TO FORM A COMPOSITE STRIP CONSISTING OF SAID METAL STRIP SANDWICHED BETWEEN SAID STRIPS OF FILM WITH SAID GUIDE HOLES IN REGISTER; AND PUNCHING SAID METAL PLATE FROM SAID COMPOSITE STRIP.
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) | 1968-12-27 | 1969-06-28 | 1969-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-27 | 1973-06-28 | 1973-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-27 | 1977-06-28 | 1977-12-28 | $7700.00 | Window Closed / Lapsed |