Patent · US Expired

Sealing glass

US4273585A · kind A · utility

3Cited by

8References

2Claims

0Family size

Assignee

Exxon Research and Engineering Company · US

Inventors

David A. Krohn · Southbridge, US
Elias Snitzer · Piscataway, US
Peter E. Raber · Milford, US

Key dates

Filing date	Apr 21, 1980
Grant date	Jun 16, 1981
Priority date	—
Expiry date	Apr 21, 2000

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC03C3/142
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A sealing glass composition having a thermal coefficient of expansion (from room temperature to 300.degree. C.) of about 90.times.10 -7/.degree.C. and a softening temperature of about 406.degree. C. is provided and consists essentially of the following ingredients in the following proportions: PbO, 66%; B.sub.2 O.sub.3, 18%; ZnO, 15%; and Fining Agent, 1%.

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