US2770563A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low alloy steel tubing
Assignee: Societe des Acieries de Pompey
•
Filing: 1953-06-10
•
Granted: 1956-11-13
•
Expires: 1973-06-10
Abstract
No abstract record available.
Inventors
- 👤 Eugene M Herzog
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:57
CPC Classifications
C; C21; C21D; C21D9/00; C21D9/08; Y; Y10; Y10S; Y10S148/00; Y10S148/901; Y10S148/902; Y10S148/909
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
ROLLED STEEL STEEL TUBING MADE OF AN ALLOY STEEL HAVING SUBSTANTIALLY THE FOLLOWING COMPOSITION 0.08-0.2% CARBON. 0.3-1.2% MANGANESE, 0.6-5% CHROMIUM, 0.10.5% SILICON, 0.15-0.6% ALUMINUM, UP TO 0.5% MOLYBDENUM AND THE BALANCE IRON, SAID TUBING BEING SUBJECTED TO A HEAT TREATMENT COMPRISING A NORMALIZING HEATING AND COOLING OR QUENCHING FOLLOWING BY AN ANNEALING CONFERRING TO IT A MICROSTRUCTURE CONSISTING OF FERRITE GRAINS AND UNIFORMLY DISPERSED CARBIDES.
Claim 2
Dependent Claim
65 words
ROLLED STEEL STEEL TUBING MADE OF AN ALLOY STEEL HAVING SUBSTANTIALLY THE FOLLOWING COMPOSITION 0.08-0.2% CARBON. 0.3-1.2% MANGANESE, 0.6-5% CHROMIUM, 0.10.5% SILICON, 0.15-0.6% ALUMINUM, UP TO 0.5% MOLYBDENUM AND THE BALANCE IRON, SAID TUBING BEING SUBJECTED TO A HEAT TREATMENT COMPRISING A NORMALIZING HEATING AND COOLING OR QUENCHING FOLLOWING BY AN ANNEALING CONFERRING TO IT A MICROSTRUCTURE CONSISTING OF FERRITE GRAINS AND UNIFORMLY DISPERSED CARBIDES.
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) | 1959-11-13 | 1960-05-14 | 1960-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-13 | 1964-05-14 | 1964-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-13 | 1968-05-14 | 1968-11-13 | $7700.00 | Window Closed / Lapsed |