US2801909A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for removing metal from the surface of a metal object
Assignee: Turco Products Inc
•
Filing: 1954-10-12
•
Granted: 1957-08-06
•
Expires: 1974-10-12
Abstract
No abstract record available.
Inventors
- 👤 Jr Fairbanks C Hirdler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:19
CPC Classifications
C; C23; C23F; C23F1/00; C23F1/02; C23F1/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A PROCESS FOR FORMING A PLATE HAVING A TAPERED CROSS SECTION ADJACENT THE OUTER PERIPHERY THEREOF WHICH COMPRISES APPLYING A MASK TO A SURFACE OF A PLATE CENTRALLY THEREOF TO PREVENT ATTACK OF THE SURFACE OF SAID PLATE BENEATH SAID MASK, LEAVING UNCOVERED AN OUTER SURFACE PORTION ADJACENT SAID MASK, PARTIALLY IMMERSING SAID PLATE IN A BODY OF ETCHING SOLUTION CONTAINED IN A TANK, SAID UNCOVERED SURFACE PROTION BEING POSITIONED SUBSTANTIALLY PARALLEL TO THE VERTICAL AXIS OF SAID TANK, ROTATING SAID PLATE ON AN AXIS DISPOSED SUBSTANTIALLY PARALLEL TO A HORIZONTAL AXIS OF SAID TAKN, AND DIFFERENTIALLY ETCHING SAID UNCOVERED SURFACE PROTION TO PRODUCE A VARYING DEPTH OF ETCH THEREON.
Claim 2
Dependent Claim
110 words
A PROCESS FOR FORMING A PLATE HAVING A TAPERED CROSS SECTION ADJACENT THE OUTER PERIPHERY THEREOF WHICH COMPRISES APPLYING A MASK TO A SURFACE OF A PLATE CENTRALLY THEREOF TO PREVENT ATTACK OF THE SURFACE OF SAID PLATE BENEATH SAID MASK, LEAVING UNCOVERED AN OUTER SURFACE PORTION ADJACENT SAID MASK, PARTIALLY IMMERSING SAID PLATE IN A BODY OF ETCHING SOLUTION CONTAINED IN A TANK, SAID UNCOVERED SURFACE PROTION BEING POSITIONED SUBSTANTIALLY PARALLEL TO THE VERTICAL AXIS OF SAID TANK, ROTATING SAID PLATE ON AN AXIS DISPOSED SUBSTANTIALLY PARALLEL TO A HORIZONTAL AXIS OF SAID TAKN, AND DIFFERENTIALLY ETCHING SAID UNCOVERED SURFACE PROTION TO PRODUCE A VARYING DEPTH OF ETCH THEREON.
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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) | 1960-08-05 | 1961-02-04 | 1961-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-05 | 1965-02-04 | 1965-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-05 | 1969-02-04 | 1969-08-06 | $7700.00 | Window Closed / Lapsed |