US3863541A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Beryllium boride armor
Assignee: United States Department of the Army
•
Filing: 1972-02-07
•
Granted: 1975-02-04
•
Expires: 1992-02-07
Abstract
Abstract Hot-pressed beryllium boride material bonded to a backup material to provide a lightweight composite armor.
Inventors
- 👤 Carl F Cline
- 👤 Mark L Wilkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:23
CPC Classifications
F; F41; F41H; F41H5/00; F41H5/02; F41H5/04; F41H5/0414; F41H5/0421; F41H5/0492; Y; Y10; Y10S; Y10S428/00; Y10S428/911
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
18 words
An improved lightweight armor in accordance with claim 1 wherein the cermet comprises a minor amount of BeO.
Claim 2
Dependent Claim
17 words
An improved lightweight armor in accordance with claim 1 wherein the backup plate is constructed of aluminum.
References Cited (Backward Citations)
US2372607A
Cited
US3110571A
Cited
US3179553A
Cited
US3431818A
Cited
US3634177A
Cited
US3616115A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |