US2790740A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phosphate coating composition and method of coating metal therewith
Assignee: Oakite Products Inc
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Filing: 1955-03-21
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Granted: 1957-04-30
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Expires: 1975-03-21
Abstract
No abstract record available.
Inventors
- 👤 Robert F Ayres
- 👤 Jr Edward Heinzelman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:28
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/05; C23C22/06; C23C22/07; C23C22/08; C23C22/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A PHOSPHATE COATING BATH COMPRISING AN AQUEOUS SOLUTION CONSISTING ESSENTIALLY OF WATER AND CONTAINING, PER GALLON OF WATER, AT LEAST ABOUT 0.06 OUNCE OF AT LEAST ONE METAL SELECTED FROM THE GROUP CONSISTING OF ZINC AND MANGANESE, SAID METAL BEING PRESENT IN THE FORM OF A COMPOUND, AT LEAST ABOUT 0.07 OUNCE OF AT LEAST ONE ANION OF AN OXIDIZING COMPOUND, PHOSPHORIC ACID IN AN AMOUNT AT LEAST 15% IN EXCESS OF THE AMOUNT NECESSARY TO REACT WITH SUCH METAL, AND AT LEAST 0.0009 OUNCE OF CERIUM IN THE FORM OF A COMPOUND.
Claim 2
Dependent Claim
93 words
A PHOSPHATE COATING BATH COMPRISING AN AQUEOUS SOLUTION CONSISTING ESSENTIALLY OF WATER AND CONTAINING, PER GALLON OF WATER, AT LEAST ABOUT 0.06 OUNCE OF AT LEAST ONE METAL SELECTED FROM THE GROUP CONSISTING OF ZINC AND MANGANESE, SAID METAL BEING PRESENT IN THE FORM OF A COMPOUND, AT LEAST ABOUT 0.07 OUNCE OF AT LEAST ONE ANION OF AN OXIDIZING COMPOUND, PHOSPHORIC ACID IN AN AMOUNT AT LEAST 15% IN EXCESS OF THE AMOUNT NECESSARY TO REACT WITH SUCH METAL, AND AT LEAST 0.0009 OUNCE OF CERIUM IN THE FORM OF A COMPOUND.
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) | 1960-04-29 | 1960-10-29 | 1961-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-29 | 1964-10-29 | 1965-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-29 | 1968-10-29 | 1969-04-30 | $7700.00 | Window Closed / Lapsed |