← Back to Patent Explorer
DE4328999A1 Expired / Lapsed DE ⏱️ 0.0 years remaining

Medical apparatus and method for silvering it

Assignee: Doduco Contacts and Refining GmbH
•
Filing: 1993-08-28
•
Granted: —
•
Expires: 2013-08-28
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract Catheters and such like medical apparatus having an outer wall of a polymeric material, in particular rubber or silicone rubber, are initially cleaned by exposure to a gas discharge in a vacuum chamber for the purpose of coating with silver, and they are then coated by sputtering consecutively with a metal having a high affinity for oxygen, in particular chromium, followed by a noble metal having a lower affinity for oxygen than silver, in particular gold, and finally with silver.

Inventors

  • 👤 Joachim Dipl Phys Dr Ganz
  • 👤 Armin Singvogel

Bibliographic Details

Application Number —
Jurisdiction DE
Data Source google_patents
Last Synchronized 2026-10-22 22:08
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/06; C23C14/14; C23C14/20; C23C14/205; A; A61; A61L; A61L29/00; A61L29/14; A61L29/16; A61M; A61M25/00; A61M25/0009; C23C14/02; C23C14/021; C23C14/022; A61L2300/00; A61L2300/10; A61L2300/102; A61L2300/104; A61L2300/40; A61L2300/404; A61L2300/60; A61L2300/606; A61L2300/608

Claims Analysis

Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.

References Cited (Backward Citations)

US4054139A Cited
DE3228849A1 Cited
US4603152A Cited

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