Patent JPS5368249A successfully refreshed from Google Patents.
← Back to Patent Explorer
JPS5368249A Expired / Lapsed JP ⏱️ 0.0 years remaining

Optical wave branching method of optical fibers

Assignee: Hitachi Ltd
•
Filing: 1976-11-30
•
Granted: —
•
Expires: 1996-11-30
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract PURPOSE:To obtain an optical branching device of small branching loss by fusion welding the exposed core portion of an optical fiber whose clad layer is etched and the exposed core portion of an optical fiber whose end is tapered.

Inventors

  • 👤 Hiroyuki Fujita

Bibliographic Details

Application Number —
Jurisdiction JP
Data Source google_patents
Last Synchronized 2026-11-02 11:10
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/26; G02B6/28; G02B6/2804; G02B6/2852; G02B6/255; G02B6/2552; G02B6/2856

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