US3273976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet steel and sections, tubes and composite constructions manufactured therefrom
Assignee: Voestalpine AG
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Filing: 1964-03-16
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Granted: 1966-09-20
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Expires: 1984-03-16
Abstract
No abstract record available.
Inventors
- 👤 Wogerbauer Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:41
CPC Classifications
B; B21; B21D; B21D47/00; B21C; B21C37/00; B21C37/06; B21C37/15; B21D13/00; B21D13/04; C; C21; C21D; C21D8/00; C21D8/02; C21D8/0278; E; E04; E04C; E04C2/00; E04C2/30; E04C2/32; E04C2/322; E04C2/34; E04C2/3405; C21D8/0221; C21D8/0236; E04C2002/3444; E04C2002/345; E04C2002/3455; E04C2002/3466; E04C2002/3494; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12347; Y10T428/1241; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12951; Y10T428/12972
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
STRAIN HARDENED SHEET STEEL HAVING A YIELD POINT OF MORE THAN 50 KG./MM., A TENSILE STRENGTH OF MORE THAN 55 KG./SQ. MM., AND AN ELONGATION OF AT LEAST 8%, THE SHEET STEEL BEING MADE OF STEEL HAVING A CARBON CONTENT OF LESS THAN 0.30% AND BEING PROVIDED WITH A RIDGE-ANDGROOVE PROFILE IN WHICH THE INNER RADIUS OF CURVATURE OF THE GROOVES IS SMALLER THAN THREE TIMES THE SHEET THICKNESS AND THE RATIO OF DEPTH TO PITCH OF THE RIDGE-AND-GROOVE PROFILE AMOUNTS TO 1:15 TO 1:3.
Claim 2
Dependent Claim
85 words
STRAIN HARDENED SHEET STEEL HAVING A YIELD POINT OF MORE THAN 50 KG./MM., A TENSILE STRENGTH OF MORE THAN 55 KG./SQ. MM., AND AN ELONGATION OF AT LEAST 8%, THE SHEET STEEL BEING MADE OF STEEL HAVING A CARBON CONTENT OF LESS THAN 0.30% AND BEING PROVIDED WITH A RIDGE-ANDGROOVE PROFILE IN WHICH THE INNER RADIUS OF CURVATURE OF THE GROOVES IS SMALLER THAN THREE TIMES THE SHEET THICKNESS AND THE RATIO OF DEPTH TO PITCH OF THE RIDGE-AND-GROOVE PROFILE AMOUNTS TO 1:15 TO 1:3.
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) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |