US2992146A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of phosphating in a trichlorethylene vapor zone
Assignee: EIDP Inc
•
Filing: 1959-02-26
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Granted: 1961-07-11
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Expires: 1979-02-26
Abstract
No abstract record available.
Inventors
- 👤 Frederick G Low
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:33
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/73
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
31 words
IN A PROCESS FOR TREATING A METAL ARTICLE, THE STEP OF CONTACTING SAID ARTICLE WITH AN AQUEOUS PHOSPHATIZING SOLUTION AT A TEMPERATURE BETWEEN 65* AND 90*C. WITHIN A TRICHLORETHYLENE VAPOR ZONE.
Claim 2
Dependent Claim
31 words
IN A PROCESS FOR TREATING A METAL ARTICLE, THE STEP OF CONTACTING SAID ARTICLE WITH AN AQUEOUS PHOSPHATIZING SOLUTION AT A TEMPERATURE BETWEEN 65* AND 90*C. WITHIN A TRICHLORETHYLENE VAPOR ZONE.
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) | 1964-07-10 | 1965-01-09 | 1965-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-10 | 1969-01-09 | 1969-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-10 | 1973-01-09 | 1973-07-11 | $7700.00 | Window Closed / Lapsed |