Inventor · disambiguated record
Donald Fraser Van Royen
Also filed as: VAN ROYEN DONALD FRASER
4 granted patents·150 citations·filing 2011–2011
81Inventor score
Files withVON HOLLEN DIRK ERNEST4
Top patents by PatentIndex Score
4 records- 0191USD679378SFace maskVON HOLLEN DIRK ERNEST·Filed 2011·Granted Apr 2, 2013·55 cites·1 claims
- 0289USD679376SFace maskVON HOLLEN DIRK ERNEST·Filed 2011·Granted Apr 2, 2013·48 cites·1 claims
- 0386USD679377SFace maskVON HOLLEN DIRK ERNEST·Filed 2011·Granted Apr 2, 2013·38 cites·1 claims
- 0452USD692122SHolding chamber for face maskVON HOLLEN DIRK ERNEST·Filed 2011·Granted Oct 22, 2013·9 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →