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

Marcel Dufour — 9 Patents

ASAsten: 6 patents #4 of 64Top 7%
Limoges, FR: #12 of 366 inventorsTop 4%
Overall (All Time): #535,341 of 4,157,543Top 15%
9 Patents All Time
Marcel Dufour has been granted 9 US patents while listed as an inventor at Asten. The first was granted in 1982 and the most recent in January 1992. Marcel Dufour ranks #535,341 of 4,157,543 US inventors in our database (top 12.9%). Patent records list Marcel Dufour in Limoges, FR.

Patents per Year

Patents granted per year, 1982 to 1992Bar chart with a peak of 4 patents in 1989.peak 41982: 2 patents19821987: 1 patents19871989: 4 patents19891990: 1 patents19901992: 1 patents1992

Issued Patents All Time

Showing 1–9 of 9 patents

Patent #TitleCo-InventorsDate
5082532 Papermaking machine and a seamed papermaker's fabric 1992-01-21
4958673 Papermaking machine and a seamed papermaker's fabric 1990-09-25
4883097 Papermakers wet felts 1989-11-28
4856562 Papermakers wet felts 1989-08-15
4842929 Papermaker's wet press felt with predensified batt thereon Jacques Piat 1989-06-27
4842925 Process to manufacture a felt with flap and a felt produced thereby Jacques Piat 1989-06-27
4683624 Method for steaming a papermaker's fabric 1987-08-04
4361618 Papermakers felt with improved drainage Ecrire Pascaud 1982-11-30
4356225 Papermarkers interwoven wet press felt 1982-10-26