SHOWA MANUFACTURING CO., LTD.
20Patents
1Active
20Granted
34Portfolio score
Filing activity: May 30, 1975 → May 28, 2015
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4546959A | Shock absorber having adjustable damping means including an auxiliary oil tank | Mechanical Engineering; Lighting; Heating | 86 | Expired |
| US4438909A | Vehicle front fork | Mechanical Engineering; Lighting; Heating | 52 | Expired |
| US5328196A | Wheel suspension system for bicycle | Performing Operations; Transporting | 44 | Expired |
| US4493490A | Front fork for cycle | Mechanical Engineering; Lighting; Heating | 25 | Expired |
| US4308018A | Trim-tilt device for marine propulsion devices | Performing Operations; Transporting | 21 | Expired |
| US4078638A | Oil pressure shock absorber | Mechanical Engineering; Lighting; Heating | 20 | Expired |
| US4005769A | Sealing arrangement for a shock absorber having an annular reservoir | Mechanical Engineering; Lighting; Heating | 20 | Expired |
| US4515384A | Front wheel suspension system for a motorcycle | Performing Operations; Transporting | 15 | Expired |
| US4392664A | Front fork of motorcycle | Performing Operations; Transporting | 14 | Expired |
| US4029306A | Shock absorber for bumpers | Performing Operations; Transporting | 14 | Expired |
| US4422661A | Height adjusting system for motorcycle | Performing Operations; Transporting | 13 | Expired |
| US4438908A | Spring receiving structure for hydraulic shock absorber | Performing Operations; Transporting | 12 | Expired |
| US4380847A | Device for mounting gas spring for opening automobile hatch door | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4424980A | Front fork for motorcycle or the like | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US4029304A | Shock absorber for bumpers | Performing Operations; Transporting | 4 | Expired |
| US4171839A | Buffer for a bumper | Performing Operations; Transporting | 3 | Expired |
| US3995497A | Apparatus for preventing defective packing of cigarets | Performing Operations; Transporting | 1 | Expired |
| US4413837A | Device for adjusting the height of vehicles | Performing Operations; Transporting | 1 | Expired |
| US6752624B2 | Soaking apparatus | Chemistry; Metallurgy | 0 | Expired |
| US10774398B2 | Far-infrared radiation multi-stage type heating furnace for steel sheets for hot stamping | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.