Patent · US Expired

Microporous elastic segmented polyurethane shaped structure

US5094914A · kind A · utility

2Cited by

4References

4Claims

0Family size

Assignee

E.I. DU PONT DE NEMOURS AND COMPANY · US

Inventors

Garret D. Figuly · Wilmington, US
Hsiang Shih · Wilmington, US
Linda H. Smith · Knoxville, US

Key dates

Filing date	Dec 20, 1990
Grant date	Mar 10, 1992
Priority date	—
Expiry date	Dec 20, 2010

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/2998
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

Solutions of segmented polyurethanes are coagulated to form shaped structures comprising a substantially continuous pore-free sheath surrounding a cellular core.

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