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Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Claude Grain — 6 Patents

LALabaz: 3 patents #5 of 19Top 30%
SASanofi: 3 patents #505 of 1,881Top 30%
Digne-les-Bains, FR: #7 of 74 inventorsTop 10%
Overall (All Time): #779,687 of 4,157,543Top 20%
6 Patents All Time
Claude Grain has been granted 6 US patents while listed as an inventor at Labaz. The first was granted in 1981 and the most recent in August 1988. Claude Grain ranks #779,687 of 4,157,543 US inventors in our database (top 18.8%). Patent records list Claude Grain in Digne-les-Bains, FR.

Patents per Year

Patents granted per year, 1981 to 1988Bar chart with a peak of 3 patents in 1983.peak 31981: 2 patents19811983: 3 patents19831988: 1 patents1988

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDate
4766223 Preparation of 2-alkyl-3-(4-hydroxybenzoyl)benzofuran Fernand Jammot 1988-08-23
4423071 Polyol derivatives, processes for preparing the same and their uses in therapeutics Michel Chignac, Fernand Jammot, Charles Pigerol, Pierre Eymard, Bernard Ferrandes 1983-12-27
RE31260 Process for the preparation of an acetonitrile derivative Michel Chignac, Charles Pigerol 1983-05-31
4377533 Process for introducing alkyl radicals into carbon chains having a functional group and compounds prepared by said process Michel Bouisset, Michel Chignac, Charles Pigerol 1983-03-22
4264773 Preparation of 2-chloro-thioxanthone Charles Pigerol, Michel Bouisset, Michel Chignac 1981-04-28
4246282 .omega.-Dialkylalkanoic acid derivatives used to induce antianoxic activity Michel Chignac, Fernand Jammot, Charles Pigerol, Pierre Eymard, Madeleine Combet (epse Broll) 1981-01-20