Inventor · disambiguated record
Ann M. Halverson
Also filed as: HALVERSON ANN M
4 granted patents·34 citations·filing 1985–1987
74Inventor score
Files withNALCO CHEMICAL CO4
Top patents by PatentIndex Score
4 records- 0162US4604213APolymers of 1-acryloyl-4-methyl piperazine, methyl chloride or sulfate quaternary salts as flocculantsNALCO CHEMICAL CO·Filed 1985·Granted Aug 5, 1986·6 cites·6 claims
- 0257US4802992ARemoval of dispersed oil from waterNALCO CHEMICAL CO·Filed 1987·Granted Feb 7, 1989·18 cites·3 claims
- 0344US4568721AStarch cationizationNALCO CHEMICAL CO·Filed 1985·Granted Feb 4, 1986·8 cites·8 claims
- 0428US4713178ADewatering agentsNALCO CHEMICAL CO·Filed 1986·Granted Dec 15, 1987·2 cites·2 claims
Join the waitlist — get patent alerts
Get an alert when Ann M. Halverson files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →