Patent US2968245A successfully refreshed from Google Patents.
Patent US3015594A successfully refreshed from Google Patents.
US3015594A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phosphate coating process
Assignee: Parker Rust Proof Co
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Filing: 1959-10-23
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Granted: 1962-01-02
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Expires: 1979-10-23
Abstract
No abstract record available.
Inventors
- 👤 William S Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:10
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/86
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
A METHOD FOR OPERATING A PHOSPHATE COATING BATH OF THE TYPE WHICH FORMS ON A METAL SURFACE A COATING CONTAINING A METAL ION DERIVED FROM THE COATING SOLUTION WHICH COMPRISES THE STEPS OF FORMING AN AQUEOUS ACIDIC PHOSPHATE SOLUTION CONTAINING A COATING METAL PHOSPHATE ION, TREATING AN ACIDIC ION EXCHANGE RESIN WITH AN AQUEOUS SATURANT SOLUTION CONTAINING THE SAID COATING METAL ION UNTIL THE SAID RESIN IS SUBSTANTIALLY SATURATED WITH SAID METAL ION, AND PASSING AT LEAST A PART OF SAID COATING SOLUTION THROUGH SAID RESIN BED TO THEREBY REMOVE FROM SAID COATING SOLUTION CATIONS OTHER THAN SAID COATING METAL ION AND TO ADD TO SAID SOLUTION SAID COATING METAL ION.
Claim 2
Independent Claim
111 words
A METHOD FOR OPERATING A PHOSPHATE COATING BATH OF THE TYPE WHICH FORMS ON A METAL SURFACE A COATING CONTAINING A METAL ION DERIVED FROM THE COATING SOLUTION WHICH COMPRISES THE STEPS OF FORMING AN AQUEOUS ACIDIC PHOSPHATE SOLUTION CONTAINING A COATING METAL PHOSPHATE ION, TREATING AN ACIDIC ION EXCHANGE RESIN WITH AN AQUEOUS SATURANT SOLUTION CONTAINING THE SAID COATING METAL ION UNTIL THE SAID RESIN IS SUBSTANTIALLY SATURATED WITH SAID METAL ION, AND PASSING AT LEAST A PART OF SAID COATING SOLUTION THROUGH SAID RESIN BED TO THEREBY REMOVE FROM SAID COATING SOLUTION CATIONS OTHER THAN SAID COATING METAL ION AND TO ADD TO SAID SOLUTION SAID COATING METAL 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) | 1965-01-01 | 1965-07-03 | 1966-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-01 | 1969-07-03 | 1970-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-01 | 1973-07-03 | 1974-01-02 | $7700.00 | Window Closed / Lapsed |