US2923608A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of improving the bonding properties of steel surfaces
Assignee: FMC Corp
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Filing: 1956-04-13
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Granted: 1960-02-02
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Expires: 1976-04-13
Abstract
No abstract record available.
Inventors
- 👤 Paul H Margulies
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:41
CPC Classifications
C; C23; C23G; C23G1/00; C23G1/02; C23G1/08; B; B05; B05D; B05D3/00; B05D3/10; B05D3/102; C23C; C23C22/00; C23C22/05; C23C22/06; C23C22/07; C23C22/08; C23C22/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
THE METHOD OF IMPROVING THE BONDING PROPERTIES OF MILD STEEL SURFACES WHICH COMPRISES TREATING THE STEEL FOR A PERIOD OF AT LEAST 20 SECONDS WITH A SOLUTION CONTAINING ABOUT 20 TO 65 WEIGHT PERCENT OF WATER, 5 TO 30 WEIGHT PERCENT OF H202 AND 25 TO 70 WEIGHT PERCENT OF MINERAL ACID IN SUCH PROPORTIONS THAT THE SUM OF PERCENTAGES OF WATER, H202 AND ACID EQUALS 100% AND THEN RINSING THE STEEL.
Claim 2
Independent Claim
72 words
THE METHOD OF IMPROVING THE BONDING PROPERTIES OF MILD STEEL SURFACES WHICH COMPRISES TREATING THE STEEL FOR A PERIOD OF AT LEAST 20 SECONDS WITH A SOLUTION CONTAINING ABOUT 20 TO 65 WEIGHT PERCENT OF WATER, 5 TO 30 WEIGHT PERCENT OF H202 AND 25 TO 70 WEIGHT PERCENT OF MINERAL ACID IN SUCH PROPORTIONS THAT THE SUM OF PERCENTAGES OF WATER, H202 AND ACID EQUALS 100% AND THEN RINSING THE STEEL.
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) | 1963-02-01 | 1963-08-03 | 1964-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-01 | 1967-08-03 | 1968-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-01 | 1971-08-03 | 1972-02-02 | $7700.00 | Window Closed / Lapsed |