JPS57196554A Expired / Lapsed JP ⏱️ 0.0 years remaining

Manufacture of lead frame

Assignee: Kyoshin Kogyo KK

•

Filing: 1981-05-28

•

Granted: —

•

Expires: 2001-05-28

📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract PURPOSE:To form a lead frame of good quality by a method wherein after the step part of lead frame is formed by punching, a protruding piece of the supporting band is formed by punching and bending, and then the other part is formed by punching. CONSTITUTION:After the part 22 to constitute the step part of the lead frame 10 is formed by punching, the step part is formed. Then the protruding piece 24 is formed in the C-shaped clip type 16 by punching and bending at the supporting band 12 on one side. Finally, the remaining part 20 of the lead terminal part 14 between a pair of supporting bands 12, 12' is formed by punching to form the lead frame. Accordingly the lead frame having the nearly C-shaped clip can be formed having good quality.

Inventors

👤 Shuji Yoshizawa

Bibliographic Details

Application Number —

Jurisdiction JP

Data Source google_patents

Last Synchronized 2026-11-02 08:56

CPC Classifications

H; H10; H10W; H10W70/00; H10W70/40; H10W70/421; H10W70/424; H10W70/427

Claims Analysis

Total Claims: 0

No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Maintenance schedule is calculated for granted US utility patents.

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag

Select Category

Notes (Optional)