Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Method of and apparatus for measuring the softening point of a vitreous specimen

Method of and apparatus for measuring the softening point of a vitreous specimen

US Patent 4711587 · Granted Dec 8, 1987

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Method of making polarization-maintaining optical fibers2001
Underground tubular ducts for telecommunications networks1998
Method for the fabrication of fluoride glass single mode optical fibers with flo1997
Method of fabricating integrated optical guides of glass1993
System for measuring the refractive index profile of optical components1992
Expansible reel for tests on filamentary material in particular optical fibres1991
Method of making a dichroic antenna structure1989
Method of producing optical fibers with noncircular core1988
Process and apparatus for producing optical-fiber preforms for mid-infrared rang1988
Devices for splicing optical fibres and cables1981
Process and apparatus for the continuous production of elongate light conductors1980