US3359083A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite structural metal members with improved fracture toughness
Assignee: Individual
•
Filing: 1965-06-14
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Granted: 1967-12-19
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Expires: 1985-06-14
Abstract
No abstract record available.
Inventors
- 👤 Herbert L Leichter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:33
CPC Classifications
C; C22; C22C; C22C14/00; B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/30; B23K35/3006; B32; B32B; B32B15/00; B32B15/01; C22C16/00; C22C5/00; C22C5/06; C22C5/08; C22C9/00; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/923; Y10S428/924; Y10S428/926; Y10S428/9335; Y10S428/939; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12632; Y10T428/12771; Y10T428/12861; Y10T428/12896; Y10T428/12903; Y10T428/12917; Y10T428/12924; Y10T428/12951; Y10T428/12972
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
76 words
A COMPOSITE STRUCTURAL BODY OF IMPROVED FRACTURE TOUGHNESS, COMPRISING: A PLUURALITY OF LAMINAT SHEETS OF MARAGING STEEL OF A COMBINED THICKNESS SUBSTANTIALLY GREATER THAN THE THICKNESS RANGE IN WHICH THE FRACTURE TOUGHNESS OF SAID STEEL IS AT A MAXIMUM, SAID SHEETS INDIVIDUALLY HAVING A THICKNESS IN THE RANGE OF ABOUT 0.01 TO 0.15 INCH WHEREIN SAID STEEL EXHIBITS AN ENHANCED FRACTURE TOUGHNESS, SAID LAMINAR SHEETS BEING DISPOSED IN CONTIGUOUS FACE-TO-FACE RELATION AND BONDING MEANS JOINING SAID
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-18 | 1971-06-19 | 1971-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-18 | 1975-06-19 | 1975-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-18 | 1979-06-19 | 1979-12-19 | $7700.00 | Window Closed / Lapsed |