Tokyo Magnetic Printing Co., LTD
23Patents
0Active
23Granted
35Portfolio score
Filing activity: May 28, 1974 → Nov 21, 2001
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US3949313A | Demodulation system for digital information | Physics | 115 | Expired |
| US4974373A | Abrasive tools | Performing Operations; Transporting | 50 | Expired |
| US4849618A | Magnetic medium for magnetic embossment and magnetic card using the same | Emerging Cross-Sectional Technologies | 45 | Expired |
| US6530968B2 | Chemical mechanical polishing slurry | Chemistry; Metallurgy | 41 | Expired |
| US4335183A | Magnetic recording medium and method of fabricating it | Emerging Cross-Sectional Technologies | 34 | Expired |
| US4923533A | Magnetic shield-forming magnetically soft powder, composition thereof, and process of making | Emerging Cross-Sectional Technologies | 34 | Expired |
| US6202926A | Magnetic recording medium and method of making the same | Physics | 26 | Expired |
| US4954140A | Abrasives, abrasive tools, and grinding method | Performing Operations; Transporting | 25 | Expired |
| US6585568B2 | Chemical mechanical polishing slurry | Chemistry; Metallurgy | 21 | Expired |
| US5643686A | Magnetic recording medium and method for manufacturing the same | Emerging Cross-Sectional Technologies | 17 | Expired |
| US6773626B2 | Reversible information display medium of liquid crystal type and non-contact IC card utilizing the same | Physics | 13 | Expired |
| US6064413A | Printed data erasing method for rewritable card and apparatus for carrying out the same | Performing Operations; Transporting | 13 | Expired |
| US6230973A | Method of inputting print-destined data in rewritable card read/write apparatus | Physics | 12 | Expired |
| US6029895A | Magnetic recording medium and method of making the same | Physics | 11 | Expired |
| US6383239B1 | Free abrasive slurry composition and a grinding method using the same | Chemistry; Metallurgy | 10 | Expired |
| US6444132B1 | Free abrasive slurry compositions | Physics | 8 | Expired |
| US6310837A | Magnetic recording medium | Emerging Cross-Sectional Technologies | 8 | Expired |
| US4241139A | Magnetic recording medium | Emerging Cross-Sectional Technologies | 8 | Expired |
| US6478834B2 | Slurry for chemical mechanical polishing | Chemistry; Metallurgy | 7 | Expired |
| US6500049B2 | Lapping oil composition for finish-grinding | Performing Operations; Transporting | 6 | Expired |
| US6585786B2 | Slurry for chemical mechanical polishing | Chemistry; Metallurgy | 5 | Expired |
| US4261023A | Magnetic recording reproducing apparatus | Physics | 4 | Expired |
| US4193099A | Device for reproducing the recorded content of a magnetic card | Physics | 3 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.