Patent · US Expired

Jacket for floppy disk

US4724501A · kind A · utility

25Cited by

3References

15Claims

0Family size

Assignee

Firma Carl Freudenberg · DE

Inventors

Holger Buchwald · Hemsbach, DE
Werner Schafer · Essen, DE
Peter Hartwig · Berlin, DE

Key dates

Filing date	Mar 25, 1985
Grant date	Feb 9, 1988
Priority date	—
Expiry date	Mar 25, 2005

Classification

Technology area (CPC G)Physics
CPC primaryG11B23/0332
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A jacket for a floppy disk consists essentially of a porous nonwoven material both for a writable cover function and a soft, fibrous liner function.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.