Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Method for preparing a porous polyimide film and a composite membrane comprising the same

Method for preparing a porous polyimide film and a composite membrane comprising the same

US Patent 11127964 · Granted Sep 21, 2021

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Photovoltaic solar cell module and manufacturing method thereof2025
Crystal oscillator based on duty ratio measurement2025
Electric bicycle2025
Electric bicycle2025
Electric bicycle2025
Partition plate, total heat exchange element and total heat exchanger including 2025
Conversion of lignin into bioplastics and lipid fuels2025
Heat transfer plate and heat exchange element2025
Catalytic conversion process and system with increased propylene production2024
Energy-saving window film used for insulating glass and preparation method and a2024
Electric bicycle2024
Liquid blocking device and evaporator thereof2024