Inventor · disambiguated record
Helen E. Oberstar
Also filed as: OBERSTAR HELEN E · OBERSTAR HELEN ELIZABETH
2 granted patents·92 citations·filing 1976–1978
68Inventor score
Files withAMERICAN CYANAMID CO2
Top patents by PatentIndex Score
2 records- 0183US4061602AConditioning shampoo composition containing a cationic derivative of a natural gum (such as guar) as the active conditioning ingredientAMERICAN CYANAMID CO·Filed 1976·Granted Dec 6, 1977·58 cites·5 claims
- 0255US4313393AIndicator device for detecting the amount of sebum in hair and scalp and method thereforAMERICAN CYANAMID CO·Filed 1978·Granted Feb 2, 1982·34 cites·1 claims
Join the waitlist — get patent alerts
Get an alert when Helen E. Oberstar 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 →