← Back to Patent Explorer
JPS5337438A Expired / Lapsed JP ⏱️ 0.0 years remaining

Optical mode filter

Assignee: NEC Corp
•
Filing: 1976-09-18
•
Granted: —
•
Expires: 1996-09-18
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract PURPOSE:To convert a propagation mode requiring cut-off to a leakage mode by giving an angle of torsion to a core part removed of a clad part and winding the clad part onto a cylindrical holding material, in a multimode optical fiber.

Inventors

  • 👤 Keiichi Takahashi

Bibliographic Details

Application Number —
Jurisdiction JP
Data Source google_patents
Last Synchronized 2026-11-05 21:15
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/10; G02B6/14

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