US2435946A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for decarburizing austenitic manganese cast iron
Assignee: Birlec Ltd
•
Filing: 1943-06-30
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Granted: 1948-02-10
•
Expires: 1963-06-30
Abstract
No abstract record available.
Inventors
- 👤 Robiette Alfred Gordon Evans
- 👤 Hancock Peter Francis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:32
CPC Classifications
C; C21; C21D; C21D5/00; C21D5/04; C21D5/06; C21D5/08; C21D5/10; Y; Y10; Y10S; Y10S148/00; Y10S148/901
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US513163A
Cited
GB189810785A
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US1123193A
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GB187130A
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US1647096A
Cited
GB419057A
Cited
US2133532A
Cited
US2225968A
Cited
US2326838A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-02-09 | 1951-08-11 | 1952-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-02-09 | 1955-08-11 | 1956-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-02-09 | 1959-08-11 | 1960-02-10 | $7700.00 | Window Closed / Lapsed |