Research/Patents/US 4603029
US 4603029Tier 1 — UAP Program Assignee

ALUMINUM-LITHIUM ALLOY

Assignee

Boeing

Filed as: BOEING COMPANY, THE

Filed

Mar 13, 1985

Granted

Jul 29, 1986

Location

REDMOND WA US

Abstract

An aluminum-lithium alloy exhibiting good fracture toughness and relatively high strength has a nominal composition of 2.5 percent lithium, 0.6 percent magnesium, 1.8 percent copper, 0.12 percent zirconium with the balance being aluminum and trace elements.

Source: Google Patents

35 USC §181 Secrecy Order

Imposed

Aug 5, 1985

Rescinded

Dec 26, 1985

Duration

4 months

Inventor

  • 1WILLIAM E. QUIST
Back to patent indexSource: USPTO 35 USC §181 secrecy order records