Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Method of back-washing submerged-type ceramic membrane separation apparatus

Method of back-washing submerged-type ceramic membrane separation apparatus

US Patent 5647988 · Granted Jul 15, 1997

Estimated economic value: $89,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Organic expander for lead storage battery2022
Dispersant2018
Nuclear reactor building and construction method thereof2014
Optical compensatory sheet comprising substrate, orientation layer and optically2004
Optical compensatory sheet comprising substrate, orientation layer and optically2003
Optical compensatory sheet comprising substrate, orientation layer and optically2003
Optical compensatory sheet comprising substrate and optically anisotropic layer2002
Optical compensatory sheet and liquid crystal display2002
Liquid crystal composition comprising liquid crystal molecules and alignment pro2002
Optically anisotropic sheet containing discotic liquid crystal molecules twisted2001
Process for decomposition and removal of dioxins contained in sludge2000
Optical compensatory sheet1998