Patent US3144360A successfully refreshed from Google Patents.
US3144360A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phosphating process
Assignee: MAN-GILL CHEMICAL COMPANY AN OH CORP
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Filing: 1962-02-19
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Granted: 1964-08-11
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Expires: 1982-02-19
Abstract
No abstract record available.
Inventors
- 👤 Bert E Palm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:14
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/05; C23C22/06; C23C22/07; C23C22/08; C23C22/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
A PROCESS FOR RAPIDLY PHOSPHATING A FERROUS METAL ARTICLE WHICH COMPRISES INTRODUCING SAID ARTICLE FOR ABOUT ONE TO ABOUT 20 SECONDS INTO A HOT AQUEOUS PHOSPHATING SOLUTION HAVING A TOTAL ACIDITY WITHIN THE RANGE FROM ABOUT 90 TO ABOUT 850 POINTS AND CONTAINING AS ESSENTIAL INGREDIENTS FROM ABOUT 1.5 TO ABOUT 8 PERCENT OF ZINC ION, FROM ABOUT 3.5 TO ABOUT 20 PERCENT OF PHOSPHATE ION, FROM ABOUT 5 TO ABOUT 26 PERCENT OF NITRATE ION, AND FROM ABOUT 1 TO ABOUT 4.5 PERCENT OF CALCIUM ION.
Claim 2
Dependent Claim
87 words
A PROCESS FOR RAPIDLY PHOSPHATING A FERROUS METAL ARTICLE WHICH COMPRISES INTRODUCING SAID ARTICLE FOR ABOUT ONE TO ABOUT 20 SECONDS INTO A HOT AQUEOUS PHOSPHATING SOLUTION HAVING A TOTAL ACIDITY WITHIN THE RANGE FROM ABOUT 90 TO ABOUT 850 POINTS AND CONTAINING AS ESSENTIAL INGREDIENTS FROM ABOUT 1.5 TO ABOUT 8 PERCENT OF ZINC ION, FROM ABOUT 3.5 TO ABOUT 20 PERCENT OF PHOSPHATE ION, FROM ABOUT 5 TO ABOUT 26 PERCENT OF NITRATE ION, AND FROM ABOUT 1 TO ABOUT 4.5 PERCENT OF CALCIUM ION.
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) | 1967-08-11 | 1968-02-10 | 1968-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-11 | 1972-02-10 | 1972-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-11 | 1976-02-10 | 1976-08-11 | $7700.00 | Window Closed / Lapsed |