Robert C. Liu
18Patents
8h-index
29Co-inventors
72Inventor score
Filing activity: Oct 29, 1974 → Aug 15, 2000
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4033940A | Cyclization of peptides | Emerging Cross-Sectional Technologies | 49 | Expired |
| US3976787A | Pharmaceutical guanidine preparations and methods of using same | Chemistry; Metallurgy | 47 | Expired |
| US4014934A | Substituted 4'-hydroxyphenyl guanidines and methods of using the same | Human Necessities | 46 | Expired |
| US4109014A | Pharmaceutical, compositions containing substituted 4'-hydroxyphenyl guanidines and methods of using same | Human Necessities | 46 | Expired |
| US4062815A | Resin peptides | Emerging Cross-Sectional Technologies | 18 | Expired |
| US4579866A | Phenylacetamides as anti-allergy, anti-asthma and anti-inflammatory agents | Human Necessities | 12 | Expired |
| US4217268A | Synthesis of peptides | Human Necessities | 12 | Expired |
| US4304692A | Synthesis of biologically active peptides | Emerging Cross-Sectional Technologies | 8 | Expired |
| US6153588A | Stable non-hygroscopic crystalline form of N-[N-[N-4-(piperidin-4-yl)butanoyl)-N-ethylglycyl] aspartyl]-L-.beta.-cyclohexyl alanine amide | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4804742A | Amide analogs of calcitonin | Human Necessities | 7 | Expired |
| US4212795A | Cyclization of peptides | Emerging Cross-Sectional Technologies | 6 | Expired |
| US4239680A | Synthesis of biologically active peptides | Emerging Cross-Sectional Technologies | 4 | Expired |
| US6753409B1 | STABLE NON-HYGROSCOPIC CRYSTALLINE FORM OF N-[N-[N-(4-(PIPERIDIN-4-YL)BUTANOYL)-N-ETHYLGLYCYL]ASPARTYL]-L-&bgr;-CYCLOHEXYL ALANINE AMIDE, INTERMEDIATES THEREOF, AND PREPARATION THEREOF AND OF ANTITHROMBOTIC AZACYCLOALKYLALKANOYL PEPTIDES AND PSEUDOPEPTIDES | Emerging Cross-Sectional Technologies | 4 | Expired |
| US4000279A | Pharmaceutical preparations containing 5'-(8'-hydroxyquinolyl)guanidine compounds and methods of using same | Chemistry; Metallurgy | 4 | Expired |
| US3947455A | 5'-(8'-Hydroxyquinolyl)guanidine compounds | Chemistry; Metallurgy | 3 | Expired |
| US4650854A | Amide analogs of calcitonin | Human Necessities | 2 | Expired |
| US6180759A | Process for the preparation of azacycloalkylakanoyl pseudotetrapeptides | Emerging Cross-Sectional Technologies | 1 | Expired |
| US4060554A | Substituted 4-hydroxyphenyl guanidines | Human Necessities | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.