Inventor · disambiguated record
Freerk J. Fontein
Also filed as: FONTEIN FREERK J
3 granted patents·36 citations·filing 1975–1978
69Inventor score
Files withSTAMICARBON3
Top patents by PatentIndex Score
3 records- 0165US4034861AProcess and installation for recovering usable materials from waste material containing metals and non metalsSTAMICARBON·Filed 1975·Granted Jul 12, 1977·21 cites·8 claims
- 0241US4202762AProcess and device for the aeration of waste waterSTAMICARBON·Filed 1978·Granted May 13, 1980·12 cites·15 claims
- 0326US4189384AGas treatment of liquidSTAMICARBON·Filed 1975·Granted Feb 19, 1980·3 cites·5 claims
Join the waitlist — get patent alerts
Get an alert when Freerk J. Fontein 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 →