Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
DR

David Redfern — 3 Patents

Basf Se: 2 patents #5,851 of 13,826Top 45%
Melbourne, AU: #1,005 of 4,989 inventorsTop 25%
Overall (All Time): #1,328,092 of 4,157,543Top 35%
3 Patents All Time
David Redfern has been granted 3 US patents while listed as an inventor at Basf Se. The first was granted in 1984 and the most recent in October 2019. David Redfern ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list David Redfern in Melbourne, AU.

Patents per Year

Patents granted per year, 1984 to 2019Bar chart with a peak of 1 patents in 1984.peak 11984: 1 patents19842014: 1 patents20142019: 1 patents2019

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
10435766 Removal of radionuclides from mixtures Henning Urch, Christian REIN, Neil Fitzmaurice, Graham Robert Orr 2019-10-08
8901237 Method to increase resistance against stain penetration of aqueous coating compositions Mubarik Mahmood Chowdhry, Hideki Yamashita, Cheeseng Yong, Gregory John Catterall, Jonathon Shane Allen +4 more 2014-12-02
4466378 Coating applicator head John William Mitchell Rogers 1984-08-21