US2859145A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cold rolling of steel
Assignee: Acme Newport Steel Co
•
Filing: 1956-01-25
•
Granted: 1958-11-04
•
Expires: 1976-01-25
Abstract
No abstract record available.
Inventors
- 👤 Richard I Somers
- 👤 Paul L Petry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:13
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/05; C23C22/06; C23C22/07; C23C22/08; C23C22/22; C23C22/12; C23C22/14; Y; Y10; Y10T; Y10T428/00; Y10T428/27; Y10T428/273
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A METHOD FOR TREATING FERROUS STRIP WHICH COMPRISES THE STEPS OF PICKLING THE STRIP, CONTACTING THE CLEANED STRIP WHILE THE SAME IS MOVING WITH AN AQUEOUS ACIDIC ZINC PHOSPHATE SOLUTION COMPRISING AS THE ESSENTIAL COATING PRODUCING INGREDIENTS IN WEIGHT PERCENT, 0.18-0.9 ZINC, 0.5-2.0 PO4 AND 0.7-2.5 GLO3, SAID SOLUTION HAVING A TOTAL ACID IN THE RANGE OF 10-60 POINTS, MAINTAINING SAID STRIP IN CONTACT WITH SAID SOLUTION UNTIL A PHOSPHATE COATING IS FORMED ON THE SURFACE OF SAID STRIP, SAID COATING HAVING A WEIGHT IN THE RANGE OF ABOUT 50 MG./PER SQ. FT. TO ABOUT 1000 MG./PER SQ. FT. AND VARYING FROM THE AVERAGE COATING WEIGHT PREVALENT ON SAID STRIP BY NOT MORE THAN ABOUT 200 MG./PER SQ. FT., AND THEREAFTER CONTINUOUSLY COLD ROLLING THE SAID STRIP.
Claim 2
Independent Claim
127 words
A METHOD FOR TREATING FERROUS STRIP WHICH COMPRISES THE STEPS OF PICKLING THE STRIP, CONTACTING THE CLEANED STRIP WHILE THE SAME IS MOVING WITH AN AQUEOUS ACIDIC ZINC PHOSPHATE SOLUTION COMPRISING AS THE ESSENTIAL COATING PRODUCING INGREDIENTS IN WEIGHT PERCENT, 0.18-0.9 ZINC, 0.5-2.0 PO4 AND 0.7-2.5 GLO3, SAID SOLUTION HAVING A TOTAL ACID IN THE RANGE OF 10-60 POINTS, MAINTAINING SAID STRIP IN CONTACT WITH SAID SOLUTION UNTIL A PHOSPHATE COATING IS FORMED ON THE SURFACE OF SAID STRIP, SAID COATING HAVING A WEIGHT IN THE RANGE OF ABOUT 50 MG./PER SQ. FT. TO ABOUT 1000 MG./PER SQ. FT. AND VARYING FROM THE AVERAGE COATING WEIGHT PREVALENT ON SAID STRIP BY NOT MORE THAN ABOUT 200 MG./PER SQ. FT., AND THEREAFTER CONTINUOUSLY COLD ROLLING THE SAID STRIP.
References Cited (Backward Citations)
US2230319A
Cited
US2191435A
Cited
US2293716A
Cited
US2540314A
Cited
US2743204A
Cited
US2724668A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-03 | 1962-05-05 | 1962-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-03 | 1966-05-05 | 1966-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-03 | 1970-05-05 | 1970-11-04 | $7700.00 | Window Closed / Lapsed |