Inventor · Oxford, CT, US

Van Au

44Patents
12h-index
34Co-inventors
81Inventor score

Filing activity: Apr 4, 1989 → Feb 16, 2022

Most-cited inventions

PatentTitleAreaCited byStatus
US5389279A Compositions comprising nonionic glycolipid surfactants Chemistry; Metallurgy 79 Expired
US5336765A Process of preparing N-substituted aldobionamides Emerging Cross-Sectional Technologies 44 Expired
US5416075A Biospecific emulsions Human Necessities 38 Expired
US5310542A Oral hygiene compositions containing antiplaque agents Human Necessities 35 Expired
US5296588A Process of preparing N-substituted aldonamides Emerging Cross-Sectional Technologies 32 Expired
US5362480A Oral hygiene compositions containing amino sugars as antiplaque agents Human Necessities 25 Expired
US5021187A Copper diamine complexes and their use as bleach activating catalysts Chemistry; Metallurgy 23 Expired
US5872111A Compositions comprising glycosylamide surfactants Human Necessities 19 Expired
US5386018A Process of preparing N-substituted aldonamides Chemistry; Metallurgy 19 Expired
US7465323B2 High carbonate oxidative dye compositions Human Necessities 17 Active
US5844103A Anionic glycasuccinamide sufactants and a process for their manufacture Chemistry; Metallurgy 15 Expired
US5412118A Thickened foam stable compositions comprising alkyl(alkyl glycosid)uronamides Chemistry; Metallurgy 15 Expired
US5401839A Process of preparing N-substituted aldonamides having improved color and color stability Chemistry; Metallurgy 12 Expired
US5521293A Heteroatom containing alkyl aldonamide compounds as superior foaming, more soluble nonionic surfactants and a process for their manufacture Chemistry; Metallurgy 9 Expired
US5786468A Anionic glycasuccinamide surfactants and a process for their manufacture Chemistry; Metallurgy 5 Expired
US5541341A Nonionic glycasuccinimide surfactants and a process for their manufacture Chemistry; Metallurgy 4 Expired
US5686603A Sulfated polyhydroxy compounds as anionic surfactants and a process for their manufacture Chemistry; Metallurgy 4 Expired
US8257720B2 Stabilized cationic ammonium compounds and compositions comprising the same Human Necessities 3 Active
US6695888B2 Transition metal complexes as dye forming catalysts in hair coloring compositions Human Necessities 3 Expired
US6821302B2 Permanent coloring of hair using carbonate salts and bicarbonate salts and using percarbamic acid precursors Human Necessities 3 Expired
US8324255B2 Chelator stabilized cationic ammonium compounds and compositions comprising the same Human Necessities 2 Active
US6034047A Bleach detergent compositions comprising nitrones and nitroso spin traps Chemistry; Metallurgy 2 Expired
US5516460A Detergent compositions comprising aldobionamides Chemistry; Metallurgy 2 Expired
US5631389A Nonionic glycasuccinimide surfactants and a process for their manufacture Chemistry; Metallurgy 2 Expired
US5643849A Catalysts and improved process for preparing salts of aldonic acid Performing Operations; Transporting 2 Expired

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.