Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Method of producing high-quality polyethylenepolyamines

Method of producing high-quality polyethylenepolyamines

US Patent 5861537 · Granted Jan 19, 1999

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Method for recovering hydrogen chloride from chlorine based waste and use of rec2005
Ion-exchanger, process for production thereof, and process for removal of multip1999
Process for removing chlorate salt from aqueous alkali chloride solution1994
Method for treating an amine-containing waste water1991
Process for preparation of alkyleneamines1990
Process for producing polyamines1989
Magnetic recording medium comprising a specific type of copolymer binder1987
Method for producing bis [.beta.(N,N-dimethylamino)ethyl]ether1986
Method for producing bis[.beta.-(N,N-dimethylamino)alkyl]-ether1985
Method for preparing bis[.beta.-(N,N-dimethylamino)ethyl]ether1984
Process for reaction in catalyst suspension system1980