DAIKIN INDUSTRIES, LTD.
4,273Patents
2,876Active
4,273Granted
59Portfolio score
Filing activity: Sep 7, 1983 → May 28, 2025 · 731 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4871440A | Biosensor | Emerging Cross-Sectional Technologies | 756 | Expired |
| US4950378A | Biosensor | Physics | 412 | Expired |
| US4923586A | Enzyme electrode unit | Emerging Cross-Sectional Technologies | 384 | Expired |
| US6794027B1 | Thin coating film comprising fluorine-containing polymer and method of forming same | Emerging Cross-Sectional Technologies | 227 | Expired |
| US5228972A | Apparatus for measuring concentration of test substance in liquid | Physics | 192 | Expired |
| US5132473A | Process for production of 1,1,1-trifluoro-2,2-dichloroethane | Chemistry; Metallurgy | 152 | Expired |
| US5679875A | Method for manufacturing 1,1,1,2,3-pentafluoropropene 1,1,1,2,3-pentafluoropropane | Performing Operations; Transporting | 145 | Expired |
| US6183872A | Silicon-containing organic fluoropolymers and use of the same | Emerging Cross-Sectional Technologies | 119 | Expired |
| US5273881A | Diagnostic applications of double D-loop formation | Chemistry; Metallurgy | 98 | Expired |
| US4935879A | Texture mapping apparatus and method | Physics | 90 | Expired |
| US5288387A | Apparatus for maintaining the activity of an enzyme electrode | Chemistry; Metallurgy | 87 | Expired |
| US5772884A | Porous polytetrafluoroethylene film and process for preparation thereof | Emerging Cross-Sectional Technologies | 87 | Expired |
| USD539888S1 | Air conditioner | General | 85 | Expired |
| US6060628A | Manufacturing method for 1,1,1,3,3-pentafluoropropane | Chemistry; Metallurgy | 85 | Expired |
| US6207236A | Coating composition, coating film, and method for producing coating film | Chemistry; Metallurgy | 84 | Expired |
| USD763203S1 | Remote controller for air conditioner | General | 84 | Active |
| US5234739A | Polytetrafluoroethylene porous film and preparation and use thereof | Emerging Cross-Sectional Technologies | 81 | Expired |
| USD755735S1 | Remote controller for air conditioner | General | 80 | Active |
| USD763204S1 | Remote controller for air conditioner | General | 79 | Active |
| US6460774B2 | Remote controller for air-conditioning apparatus | Electricity | 76 | Expired |
| US4733332A | Illuminating device | Mechanical Engineering; Lighting; Heating | 76 | Expired |
| US5592824A | Driving control device for air conditioner | Physics | 74 | Expired |
| US5670316A | Diagnostic applications of double D-loop formation | Chemistry; Metallurgy | 74 | Expired |
| US8871850B2 | Highly dielectric film | Emerging Cross-Sectional Technologies | 73 | Active |
| USD642081S1 | Controller for air conditioner | General | 72 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.