Inventor · disambiguated record

Richard Freisen

Also filed as: FREISEN RICHARD

2 granted patents·9 citations·filing 2001–2002

50Inventor score

Technology areasA61P

Files withMERCK FROSST CANADA INC2

Top patents by PatentIndex Score

2 records

0175US6399636B2Tri-aryl-substituted-ethane PDE4 inhibitorsMERCK FROSST CANADA INC·Filed 2001·Granted Jun 4, 2002·9 cites·17 claims
0249US6841564B2Tri-aryl-substituted-ethane PDE4 inhibitorsMERCK FROSST CANADA INC·Filed 2002·Granted Jan 11, 2005·0 cites·2 claims

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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →