Patent · US Expired

Lightweight composite material

US4966801A · kind A · utility

29Cited by

3References

20Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Robert Becker · Warsaw, US
Gerd Goldmann · Krefeld, DE
Ulrich von Gizycki · Leverkusen, DE
Wulf von Bonin · Leverkusen, DE

Key dates

Filing date	Nov 25, 1988
Grant date	Oct 30, 1990
Priority date	—
Expiry date	Nov 25, 2008

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T442/3537
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

A lightweight composite material is disclosed which comprises three-dimensionally arranged fibers of at least 50 mm length provided in a thermoplast matrix. The thermoplast matrix is thermally treated to form cavities within the matrix.

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