NCH Corporation
96Patents
68Active
96Granted
53Portfolio score
Filing activity: Mar 9, 1979 → Apr 17, 2023 · 8 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5500369A | Air sampler | Physics | 56 | Expired |
| USD258472S | Urinal screen | General | 54 | Expired |
| US7241723B2 | Bearing cleaning composition and method of use | Chemistry; Metallurgy | 46 | Expired |
| US6335191B1 | Automated system and method for growing bacteria | Emerging Cross-Sectional Technologies | 46 | Expired |
| US7823656B1 | Method for monitoring drilling mud properties | Fixed Constructions | 45 | Active |
| US5885942A | Multifunctional lubricant additive | Chemistry; Metallurgy | 37 | Expired |
| US5126062A | Calcium sulfonate grease and method of manufacture | Chemistry; Metallurgy | 31 | Expired |
| US6772694B1 | Method for selectively dispersing or delivering a control agent | Mechanical Engineering; Lighting; Heating | 26 | Expired |
| US4969491A | Acid drain opening system | Fixed Constructions | 24 | Expired |
| US7081361B2 | Biomass generator | Emerging Cross-Sectional Technologies | 20 | Expired |
| US7306167B2 | Light-activated mist sprayer system | Emerging Cross-Sectional Technologies | 20 | Expired |
| US5856376A | Tire puncture sealant | Emerging Cross-Sectional Technologies | 18 | Expired |
| US4854973A | Low odor carbon and paint remover composition | Chemistry; Metallurgy | 15 | Expired |
| US5408790A | Modular dock system | Performing Operations; Transporting | 15 | Expired |
| US7635587B2 | Biomass generator | Emerging Cross-Sectional Technologies | 15 | Active |
| US8430337B2 | Light-activated portable aerosol mist sprayer device | Performing Operations; Transporting | 13 | Active |
| US6840267B1 | Connection kit for a bath spout | Emerging Cross-Sectional Technologies | 13 | Expired |
| US6675789B2 | Control agent delivery system | Mechanical Engineering; Lighting; Heating | 12 | Expired |
| US9458406B2 | Calcium hydroxyapatite based sulfonate grease compositions and method of manufacture | Chemistry; Metallurgy | 11 | Active |
| US7150118B1 | Disposable hazard warning and spill pick-up kit | Physics | 11 | Expired |
| US9273265B2 | Calcium carbonate based sulfonate grease compositions and method of manufacture | Chemistry; Metallurgy | 10 | Active |
| USD596717S1 | Waterfall tub spout | General | 10 | Expired |
| US6016818A | Recirculating parts washer | Performing Operations; Transporting | 9 | Expired |
| US8551762B2 | System and apparatus for feeding, solubilizing, growing and discharging a biological material | Electricity | 9 | Active |
| USD554983S1 | Low-profile, under-shelf bracket | General | 9 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.