US3145468A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet marking method
Assignee: Inland Steel Co
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Filing: 1961-10-05
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Granted: 1964-08-25
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Expires: 1981-10-05
Abstract
No abstract record available.
Inventors
- 👤 Alfred L Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:26
CPC Classifications
B; B21; B21H; B21H8/00; B21H8/005; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4998; Y10T29/49982
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A METHOD OF CHARACTERISTICALLY MARKING A DIFFERENTIALLY COATED PIECE OF GALVANIZED STRIP OR SHEET STOCK TO FACILITATE READY IDENTIFICATION OF A RELATIVELY MORE HEAVILY COATED SIDE OF THE STOCK, COMPRISING THE STEPS OF; TREATING THE SURFACE OF AT LEAST ONE ROLL IN A SET OF FINISHING ROLLS TO DEFINE AN AREA OF SAID SURFACE HAVING A DISTINCTIVE TEXTURE, PASSING THE STOCK THROUGH THE SET OF ROLLS WITH A PREDETERMINED SIDE OF THE STOCK FACING SAID ONE ROLL TO IMPRESS A PATTERN IN THE GALVANIZED COATING OF THE PREDETERMINED SIDE OF THE STOCK ENGAGED BY THE SURFACE HAVING A DISTINCTIVELY TEXTURED AREA, WHEREBY THE RELATIVELY MORE HEAVILY COATED SIDE OF THE STOCK IS READILY IDENTIFIABLE.
Claim 2
Independent Claim
114 words
A METHOD OF CHARACTERISTICALLY MARKING A DIFFERENTIALLY COATED PIECE OF GALVANIZED STRIP OR SHEET STOCK TO FACILITATE READY IDENTIFICATION OF A RELATIVELY MORE HEAVILY COATED SIDE OF THE STOCK, COMPRISING THE STEPS OF; TREATING THE SURFACE OF AT LEAST ONE ROLL IN A SET OF FINISHING ROLLS TO DEFINE AN AREA OF SAID SURFACE HAVING A DISTINCTIVE TEXTURE, PASSING THE STOCK THROUGH THE SET OF ROLLS WITH A PREDETERMINED SIDE OF THE STOCK FACING SAID ONE ROLL TO IMPRESS A PATTERN IN THE GALVANIZED COATING OF THE PREDETERMINED SIDE OF THE STOCK ENGAGED BY THE SURFACE HAVING A DISTINCTIVELY TEXTURED AREA, WHEREBY THE RELATIVELY MORE HEAVILY COATED SIDE OF THE STOCK IS READILY IDENTIFIABLE.
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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) | 1967-08-25 | 1968-02-24 | 1968-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-25 | 1972-02-24 | 1972-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-25 | 1976-02-24 | 1976-08-25 | $7700.00 | Window Closed / Lapsed |