Patent JPS5424977A successfully refreshed from Google Patents.
← Back to Patent Explorer
JPS5424977A Expired / Lapsed JP ⏱️ 0.0 years remaining

Production of shrinkable tube

Assignee: Sumitomo Electric Industries Ltd
•
Filing: 1977-07-27
•
Granted: —
•
Expires: 1997-07-27
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract PURPOSE:A tube of crosslinked polyethylene is expanded by heating and then cooled with no changein the diameter. Then parts of the resultant tube are irradiated with electron rays to change the rate of shrinking at the irradiated parts, thus producing said shrinkable tubes suitable for protecting the parts of cable joints.

Inventors

  • 👤 Keiichi Kojima

Bibliographic Details

Application Number —
Jurisdiction JP
Data Source google_patents
Last Synchronized 2026-11-06 14:59
CPC Classifications
B; B29; B29C; B29C61/00; B29C61/06

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