Daido Tokushuko Kabushiki Kaisha
258Patents
16Active
258Granted
42Portfolio score
Filing activity: Oct 2, 1975 → May 18, 2011 · 14 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4963508A | Method of making an epitaxial gallium arsenide semiconductor wafer using a strained layer superlattice | Emerging Cross-Sectional Technologies | 133 | Expired |
| US6405761B1 | Expandable metal-pipe bonded body and manufacturing method thereof | Emerging Cross-Sectional Technologies | 99 | Expired |
| US6334351B1 | Metal pipe expander | Emerging Cross-Sectional Technologies | 94 | Expired |
| US4928154A | Epitaxial gallium arsenide semiconductor on silicon substrate with gallium phosphide and superlattice intermediate layers | Emerging Cross-Sectional Technologies | 57 | Expired |
| US4902359A | Wear-resistant titanium or titanium-alloy member and a method for manufacturing the same | Emerging Cross-Sectional Technologies | 49 | Expired |
| US6337459B1 | Multi-layered anti-coking heat resisting metal tube and the method for manufacturing thereof | Performing Operations; Transporting | 48 | Expired |
| US5244517A | Manufacturing titanium alloy component by beta forming | Chemistry; Metallurgy | 45 | Expired |
| US5132750A | Light-emitting diode having light reflecting layer | Electricity | 45 | Expired |
| US4694508A | Fingertip protectors for work gloves | Human Necessities | 41 | Expired |
| US4989460A | Magnetostriction type torque sensor with temperature dependent error compensation | Physics | 34 | Expired |
| US4326842A | Device for the pulverization of radioactive wastes | Emerging Cross-Sectional Technologies | 33 | Expired |
| US4275287A | Plasma torch and a method of producing a plasma | Electricity | 28 | Expired |
| US4596953A | Apparatus for scanning a material for detection of flaws and having material axis deviation detection | Physics | 26 | Expired |
| US4636093A | Method of measuring temperatures and portable recorder for storing temperature data | Physics | 26 | Expired |
| US4790516A | Reactor for iron making | Emerging Cross-Sectional Technologies | 24 | Expired |
| US4406388A | Method of conveying strip materials | Performing Operations; Transporting | 22 | Expired |
| US6098866A | Diffusion bonding apparatus for pipes | Emerging Cross-Sectional Technologies | 22 | Expired |
| US5281176A | Contact member with composite sintered metal paste strip having 1-5 wt % carbon diffusion bonded therein | Emerging Cross-Sectional Technologies | 19 | Expired |
| US5831252A | Methods of bonding titanium and titanium alloy members by high frequency heating | Performing Operations; Transporting | 19 | Expired |
| US4991447A | Torque detecting device | Emerging Cross-Sectional Technologies | 19 | Expired |
| US6225556A | Magnetic shield sheet and method for manufacturing thereof, and cable using the sheet | Emerging Cross-Sectional Technologies | 19 | Expired |
| US4279646A | Free cutting steel containing sulfide inclusion particles with controlled aspect, size and distribution | Chemistry; Metallurgy | 18 | Expired |
| US4614159A | Powdered coal burner | Emerging Cross-Sectional Technologies | 18 | Expired |
| US4849168A | Ti-Al intermetallics containing boron for enhanced ductility | Chemistry; Metallurgy | 17 | Expired |
| US5975405A | Diffusion bonding method and diffusion bonding apparatus | Emerging Cross-Sectional Technologies | 17 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.