Patent US3022161A successfully refreshed from Google Patents.
US3022161A
Expired / Lapsed
US
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Process of detinning lacquered tin scrap derived from tin sheet metal
Assignee: Evonik Operations GmbH
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Filing: 1960-03-21
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Granted: 1962-02-20
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Expires: 1980-03-21
Abstract
No abstract record available.
Inventors
- 👤 Finkener Friedrich
- 👤 Krug Johannes
- 👤 Loges Hans
- 👤 Rodewald Bernhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:24
CPC Classifications
C; C22; C22B; C22B25/00; C22B25/06; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
THE PROCESS OF DETINNING SCAP OOF LACQUER-LAYERED TIN COVERED PLATE MATERIAL; COMPRISING THE STEPS OF FIRST SUBJECTING SAID SCARP TO A THERMAL PRETREATMENT BY MEANS OF A FLUID WHOSE TEMPERATURE RANGES FROM 160* TO LESS THAN 350*C. TO BRING ABOUT QUICK DISINTEGRATION OF THE LACQUER LAYER, AND THEN FOLLOWING UP THE DETINING OPERATION PROPER BY APPLYING AQUEOUS AKALI SOLUTION TO SAID PRETREATED SCRAP MATERIAL WITHOUT ADVERSITY AFFECTING THE PLATE MATERIAL.
Claim 2
Dependent Claim
70 words
THE PROCESS OF DETINNING SCAP OOF LACQUER-LAYERED TIN COVERED PLATE MATERIAL; COMPRISING THE STEPS OF FIRST SUBJECTING SAID SCARP TO A THERMAL PRETREATMENT BY MEANS OF A FLUID WHOSE TEMPERATURE RANGES FROM 160* TO LESS THAN 350*C. TO BRING ABOUT QUICK DISINTEGRATION OF THE LACQUER LAYER, AND THEN FOLLOWING UP THE DETINING OPERATION PROPER BY APPLYING AQUEOUS AKALI SOLUTION TO SAID PRETREATED SCRAP MATERIAL WITHOUT ADVERSITY AFFECTING THE PLATE MATERIAL.
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) | 1965-02-19 | 1965-08-21 | 1966-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-19 | 1969-08-21 | 1970-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-19 | 1973-08-21 | 1974-02-20 | $7700.00 | Window Closed / Lapsed |