US2629807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating
Assignee: National Research Corp
•
Filing: 1950-04-06
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Granted: 1953-02-24
•
Expires: 1970-04-06
Abstract
No abstract record available.
Inventors
- 👤 Godley Philip
- 👤 Philip J Clough
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:57
CPC Classifications
H; H01; H01B; H01B1/00; Y; Y10; Y10T; Y10T29/00; Y10T29/43; Y10T29/435; Y10T83/00; Y10T83/263
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
135 words
APPARATUS FOR FORMING A ZINC-FREE STRIPE ON A WEB OF ZINC-COATED, NONCONDUCTING SHEET MATERIAL BY REMOVING A BAND OF SAID ZINC COATING, SAID APPARATUS COMPRISING MEANS FOR ADVANCING THE WEB, AN ELECTRICAL CONTACT POSITIONED TO ENGAGE THE ZINC FACE OF THE WEB, A PLURALITY OF ELECTRODES SUCCESSIVELY POSITIONABLE ADJACENT SAID ZINC COATING, EACH SAID ELECTRODE HAVING A WIDTH, EXTENDING ACROSS THE ADVANCING WEB, WHICH IS ON THE ORDER OF THE THICKNESS DESIRED FOR THE ZINC-FREE STRIPE, EACH SAID ELECTORDE COMPRISING A SURFACE STRATUM OF CHROMIUM, MEANS FOR MOVING SAID ELECTRODES SUCCESSIVELY INTO AND OUT OF ENGAGEMENT WITH SAID WEB, MEANS FOR MAINTAINING A SUFFICIENT POTENTIAL DIFFERENCE BETWEEN ONE OF SAID ELECTRODES IN CONTACT WITH THE WEB AND THE ZINC FACE OF THE WEB TO CREATE AN ARC BETWEEN SAID ZINC COATING AND SAID ELECTRODE, SAID
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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) | 1956-02-24 | 1956-08-25 | 1957-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-24 | 1960-08-25 | 1961-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-24 | 1964-08-25 | 1965-02-24 | $7700.00 | Window Closed / Lapsed |