US3791818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steel alloy
Assignee: United States Department of the Air Force
•
Filing: 1972-08-14
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Granted: 1974-02-12
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Expires: 1992-08-14
Abstract
Abstract A low alloy steel which utilizes boron as an essential alloying ingredient. The boron controls and manipulates the fragment mass distribution characteristics of alloy steels used in fabricating explosive warheads.
Inventors
- 👤 T Watmough
- 👤 Shea R O
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:33
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/18; C22C38/24; C22C38/002
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
12 words
An alloy in accordance with claim 1 containing about 0.002 percent boron.
Claim 2
Dependent Claim
12 words
An alloy in accordance with claim 1 containing about 0.006 percent boron.
References Cited (Backward Citations)
US2528867A
Cited
US2683086A
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US2737455A
Cited
US2858206A
Cited
US3288600A
Cited
US3615879A
Cited
US3547032A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-11 | 1977-08-13 | 1978-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-11 | 1981-08-13 | 1982-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-11 | 1985-08-13 | 1986-02-12 | $7700.00 | Window Closed / Lapsed |