Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Production of asymmetrical microporous membranes by double irradiation and asymmetrical membranes

Production of asymmetrical microporous membranes by double irradiation and asymmetrical membranes

US Patent 4832997 · Granted May 23, 1989

Assignee

No assignee recorded.

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Process for fabricating a piezoelectric nanogenerator, piezoelectric nanogenerat2020
Device and process for switching and controlling an electron dose emitted by a m2006
Miniaturized photoacoustic spectrometer2002
Tunable Fabry-Perot interferometer with floating electrode on one mirror and con2000
Films having in their thickness at least two superimposed zones, including an in1992
Films having in their thickness at least two superimposed zones, including an in1991
Microporous membrane obtained by the irradiation of two faces and process for ob1989