Tetsuo Sekiguchi
26Patents
10h-index
26Co-inventors
75Inventor score
Filing activity: Sep 20, 1976 → Dec 1, 1998
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4822153A | One-hand zoom lens barrel | Physics | 37 | Expired |
| US4221687A | Anti-yellowing composition | Chemistry; Metallurgy | 32 | Expired |
| US5754339A | Vibration compensation device for binocular | Physics | 27 | Expired |
| US4346967A | Zoom lens barrel for macrophotographing | Physics | 25 | Expired |
| US4252698A | Anti-yellowing composition | Chemistry; Metallurgy | 23 | Expired |
| US5222407A | Slip clutch mechanism | Emerging Cross-Sectional Technologies | 22 | Expired |
| US5144494A | Zoom lens barrel | Physics | 17 | Expired |
| US4387968A | Zoom lens mount barrel | Physics | 17 | Expired |
| US5148199A | Motor-driven zoom lens barrel | Physics | 16 | Expired |
| US5483384A | Lens accessory attaching mechanism | Physics | 12 | Expired |
| US4217258A | Stabilized halogen-containing resin composition | Chemistry; Metallurgy | 10 | Expired |
| US4244848A | Halogen containing resin composition | Chemistry; Metallurgy | 8 | Expired |
| US4105627A | Mercaptoheterocyclic resin stabilizers | Chemistry; Metallurgy | 7 | Expired |
| US6043934A | Observing equipment having hand-vibration compensation system | Physics | 7 | Expired |
| US4134868A | Aromatic carboxylic acid ester stabilizers for PVC resins | Chemistry; Metallurgy | 7 | Expired |
| US6067195A | Binoculars having hand-vibration compensation system | Physics | 6 | Expired |
| US4997888A | Weatherability and adherence of polypropylene | Chemistry; Metallurgy | 6 | Expired |
| US4994529A | Weatherability and adherence of polypropylene | Chemistry; Metallurgy | 5 | Expired |
| US4224203A | Vinyl chloride polymer stabilizer comprising a metal organophosphonate | Chemistry; Metallurgy | 5 | Expired |
| US4160762A | Halogen-containing resin stabilizer comprising an alkoxycarbonylalkylenetin sulfide | Chemistry; Metallurgy | 4 | Expired |
| US4113678A | Tin sulfide stabilizer for styrene polymer | Chemistry; Metallurgy | 4 | Expired |
| US5160956A | Lens barrel with screw mount | Physics | 4 | Expired |
| US5191482A | Lens driving apparatus | Physics | 4 | Expired |
| US4146518A | Stabilized halogen-containing resin composition | Chemistry; Metallurgy | 4 | Expired |
| US4224218A | Stabilized vinyl chloride polymer comprising a metal mono-organic phosphite | Chemistry; Metallurgy | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.