Masayuki Ishikawa
15Patents
8h-index
37Co-inventors
72Inventor score
Filing activity: Sep 10, 1974 → Oct 1, 2004
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4405623A | Quinazolinde-dione compounds, process for production thereof and pharmaceutical use thereof | Chemistry; Metallurgy | 14 | Expired |
| US5075308A | Method for treating urinary obstruction | Human Necessities | 12 | Expired |
| US4276295A | 3-Aromatic moiety substituted-4(3H)-quinazolinones, process for production thereof, and use thereof | Chemistry; Metallurgy | 11 | Expired |
| US4011250A | 1.alpha., 2.alpha.-Dihydroxycholecalciferol and process for preparing the same | Chemistry; Metallurgy | 11 | Expired |
| US4022768A | Process for preparation of 1.alpha.,25-dihydroxycholecalciferol | Chemistry; Metallurgy | 9 | Expired |
| US7041317B2 | Sustained-release preparation containing 5-acetyl-4,6-dimethyl-2[2-[4-(2-methoxyphenyl) piperazinyl]ethylamino] pyrimidine trihydrochloride as active ingredient | Human Necessities | 8 | Expired |
| US3963716A | Novel 1-phthalazone derivative, a process for its preparation and a pharmaceutical composition containing it | Chemistry; Metallurgy | 8 | Expired |
| US4451467A | 4(3H)-Quinazolinone derivatives, process for production thereof, and pharmaceutical compositions comprising said compounds | Chemistry; Metallurgy | 8 | Expired |
| US4293553A | 1-Phthalazone derivatives, and use thereof | Chemistry; Metallurgy | 2 | Expired |
| US4182876A | Substituted-phthalazone 7-carboxylic acid and salts and process for preparing same | Chemistry; Metallurgy | 1 | Expired |
| US4517189A | 2,6,7,8-Substituted quinazolines, process for production thereof, and use thereof | Chemistry; Metallurgy | 0 | Expired |
| US8507220B2 | Tobacco BY2 cells containing a tomato mosaic virus vector for protein production | Chemistry; Metallurgy | 0 | Active |
| US6410717B1 | Gene encoding a host factor protein indispensable for multiplication of a plant virus | Chemistry; Metallurgy | 0 | Expired |
| US7611833B2 | Yeast genes that affect viral replication | Human Necessities | 0 | Expired |
| US5145851A | Method for treating urinary obstruction | Human Necessities | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.