Inventor · Meriden, CT, US

Sing-Yuen Sit

58Patents
9h-index
51Co-inventors
81Inventor score

Filing activity: Feb 18, 1988 → Dec 9, 2020

Most-cited inventions

PatentTitleAreaCited byStatus
US6995174B2 Hepatitis C virus inhibitors Human Necessities 102 Expired
US7449479B2 Hepatitis C virus inhibitors Human Necessities 49 Expired
US7915291B2 Hepatitis C virus inhibitors Human Necessities 32 Active
US6001836A Dihydropyridine NPY antagonists: cyanoguanidine derivatives Chemistry; Metallurgy 22 Expired
US4897490A Antihypercholesterolemic tetrazole compounds Chemistry; Metallurgy 19 Expired
US7772180B2 Hepatitis C virus inhibitors Chemistry; Metallurgy 17 Active
US8299094B2 Hepatitis C virus inhibitors Human Necessities 13 Active
US8710229B2 Hepatitis C virus inhibitors Human Necessities 10 Active
US5922735A 4-aryl-3-hydroxyquinolin-2-one derivatives as ion channel modulators Human Necessities 9 Expired
US5892045A 4-aryl-3-hydroxyquinolin-2-one derivatives as ion channel modulators Human Necessities 9 Expired
US8748415B2 C-28 amines of C-3 modified betulinic acid derivatives as HIV maturation inhibitors Human Necessities 8 Active
US6562846B2 Bisarylimidazolyl fatty acid amide hydrolase inhibitors Chemistry; Metallurgy 7 Expired
US8754068B2 Modified C-3 betulinic acid derivatives as HIV maturation inhibitors Human Necessities 7 Active
US8846647B2 C-17 and C-3 modified triterpenoids with HIV maturation inhibitory activity Chemistry; Metallurgy 7 Active
US10913738B2 Aminotriazolopyridines as kinase inhibitors Chemistry; Metallurgy 6 Active
US8906889B2 C-3 cycloalkenyl triterpenoids with HIV maturation inhibitory activity Chemistry; Metallurgy 6 Active
US6432960B1 Squarate derivatives of dihydropyridine NPY antagonists Human Necessities 6 Expired
US8802661B2 C-28 amides of modified C-3 betulinic acid derivatives as HIV maturation inhibitors Human Necessities 6 Active
US4870187A Antihypercholesterolemic tetrazol-1-yl compounds Chemistry; Metallurgy 6 Expired
US5110940A Antihypercholesterolemic tetrazole compounds Chemistry; Metallurgy 6 Expired
US4898949A Intermediates for the preparation of antihypercholesterolemic tetrazole compounds Chemistry; Metallurgy 5 Expired
US6177429A Dihydropyrazine derivatives as NPY antagonists Chemistry; Metallurgy 5 Expired
US6444675B2 4-alkyl and 4-cycloalkyl derivatives of dihydropyridine NPY antagonists Chemistry; Metallurgy 5 Expired
US6391881B1 Thiourea derivatives of dihydropyridine NPY antagonists Chemistry; Metallurgy 5 Expired
US8889871B2 Hepatitis C virus inhibitors Human Necessities 3 Active

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