K.S.M. Co., Ltd.
9Patents
3Active
9Granted
35Portfolio score
Filing activity: Dec 30, 1998 → May 9, 2018 · 1 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6462874B1 | Optical systems employing stepped diffractive surfaces | Emerging Cross-Sectional Technologies | 38 | Expired |
| US7479101B2 | Method for treating an animal using a constant amplitude electromagnetic field | Human Necessities | 21 | Active |
| US6262844A | Optical systems employing stepped diffractive surfaces | Emerging Cross-Sectional Technologies | 20 | Expired |
| USD437176S | Gas grill | General | 20 | Expired |
| USD632160S1 | Gaming system wall mount | General | 13 | Expired |
| US6947220B1 | Devices for information processing in optical communications | Physics | 9 | Expired |
| US6735362B1 | Dispersive optical systems utilizing transmissive diffraction gratings | Physics | 4 | Expired |
| US11021411B2 | Potassium magnesium fertilizer | Chemistry; Metallurgy | 0 | Active |
| US9957456B2 | Carbon layer derived from carbide ceramics and preparation method thereof | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.