SUGA TEST INSTRUMENTS CO., LTD.
22Patents
1Active
22Granted
31Portfolio score
Filing activity: Feb 27, 1985 → Jun 23, 2014
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4831564A | Apparatus for estimating and displaying remainder of lifetime of xenon lamps | Electricity | 105 | Expired |
| US4760748A | Optical deterioration-accelerating weather and optical resistance testing apparatus | Physics | 23 | Expired |
| US5667647A | Oxygen-hydrogen electrolytic gas generation apparatus | Emerging Cross-Sectional Technologies | 21 | Expired |
| US5138892A | Accelerated light fastness test method | Physics | 15 | Expired |
| US4704903A | Light fastness/weather resistance accelerated test machine with an air mixing regulator | Physics | 15 | Expired |
| US5305634A | Weathering test method and sample holder used therein | Physics | 14 | Expired |
| US4975047A | Oven provided with oxygen concentration controls | Mechanical Engineering; Lighting; Heating | 12 | Expired |
| US4954693A | Ventilation regulated hot air supplied constant temperature oven | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US9063050B2 | Weathering test instrument and solid-state light-emitting device system | Physics | 5 | Active |
| US4983526A | Method of measuring and controlling ozone concentration | Emerging Cross-Sectional Technologies | 5 | Expired |
| US4809514A | Apparatus for removing snow deposited on wall of snow generating apparatus | Mechanical Engineering; Lighting; Heating | 4 | Expired |
| US4792093A | Artificial snow wetting apparatus | Mechanical Engineering; Lighting; Heating | 4 | Expired |
| US4770534A | Color indication comparison method | Physics | 4 | Expired |
| US4799379A | Apparatus for measuring the moisture content of snow particles | Emerging Cross-Sectional Technologies | 3 | Expired |
| US6591701B2 | Weathering test apparatus having a long-arc type air-cooled vertical metal halide lamp | Physics | 3 | Expired |
| US4767054A | Apparatus for changing artificial snow to wet snow | Mechanical Engineering; Lighting; Heating | 3 | Expired |
| US6661915B1 | Illumination variable colorimetric method and colorimeter | Physics | 3 | Expired |
| US4798331A | Artificial snow production apparatus | Mechanical Engineering; Lighting; Heating | 3 | Expired |
| US4768711A | Apparatus for changing artificial snow to wet snow | Mechanical Engineering; Lighting; Heating | 2 | Expired |
| US4607790A | Cycle sequence time/temperature controller | Physics | 1 | Expired |
| US4912365A | Automatic carbon-replacing weather resistance testing apparatus | Physics | 0 | Expired |
| US4766488A | Falling particle televising apparatus | Physics | 0 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.