US2522176A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drawing ferrous wire and other metal-working processes
Assignee: Parker Rust Proof Co
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Filing: 1949-03-25
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Granted: 1950-09-12
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Expires: 1969-03-25
Abstract
No abstract record available.
Inventors
- 👤 Holden Harry Ashton
- 👤 Setterington John Temple
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:37
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/82; C23C22/83; C10; C10M; C10M2201/00; C10M2201/06; C10M2201/062; C10M2201/063; C10M2201/087; C10N; C10N2010/00; C10N2010/04; C10N2040/00; C10N2040/20; C10N2040/24; C10N2040/241; C10N2040/242; C10N2040/243; C10N2040/244; C10N2040/245; C10N2040/246; C10N2040/247; C10N2050/00; C10N2050/015; C10N2050/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
75 words
IN THE METHOD OF WORKING FERROUS METALS BY OPERATIONS INVOLVING PLASTIC DEFORMATION OF THE METAL WHEREIN THE METAL HAS A COATING OF CRYSTALLINE PHOSPHATE OF THE TYPE FORMED BY THE INTERACTION OF THE METAL SURFACE WITH AN ACIDIC PHOSPHATE THE IMPROVEMENT WHICH COMPRISES FACILITATING THE WORKING BY FORMING ON THE SAID PHOSPHATE COATING A DRY COATING OF AT LEAST ONE COMPOUND SELECTED FROM THE GROUP CONSISTING OF OXIDES AND HYDROXIDES OF THE ALKALINE EARTH METALS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-11 | 1954-03-13 | 1954-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-11 | 1958-03-13 | 1958-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-11 | 1962-03-13 | 1962-09-12 | $7700.00 | Window Closed / Lapsed |