US2875112A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for improving the physical properties of chromized articles
Assignee: Deutsche Edelstahlwerke AG
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Filing: 1955-06-13
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Granted: 1959-02-24
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Expires: 1975-06-13
Abstract
No abstract record available.
Inventors
- 👤 Becker Gottfried
- 👤 Bungardt Karl
- 👤 Lange Karl Heinz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:20
CPC Classifications
C; C23; C23C; C23C10/00; C23C10/60; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12806; Y10T428/12826; Y10T428/12847; Y10T428/12854
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
32 words
PROCESS FOR IMPROVING THE PHYSICAL PROPOERTIES OF A CHROMIZED ARTICLES WHICH COMPRISES THE SEP OF QUENCHING THE ARTICLE, AFTER THE CHROM-ZING OPERATION AND WITHOUT PREVIOUS MECHANICAL DEFORMATION FROM A TEMPERATURE ABOVE 900*C.
Claim 2
Dependent Claim
32 words
PROCESS FOR IMPROVING THE PHYSICAL PROPOERTIES OF A CHROMIZED ARTICLES WHICH COMPRISES THE SEP OF QUENCHING THE ARTICLE, AFTER THE CHROM-ZING OPERATION AND WITHOUT PREVIOUS MECHANICAL DEFORMATION FROM A TEMPERATURE ABOVE 900*C.
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) | 1962-02-23 | 1962-08-25 | 1963-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-23 | 1966-08-25 | 1967-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-23 | 1970-08-25 | 1971-02-24 | $7700.00 | Window Closed / Lapsed |