KAO CORPORATION
3,628Patents
1,580Active
3,628Granted
55Portfolio score
Filing activity: Mar 3, 1981 → Oct 17, 2023 · 619 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5370634A | Disposable diaper | Human Necessities | 274 | Expired |
| US5687874A | Device for holding article | Emerging Cross-Sectional Technologies | 216 | Expired |
| US6306122A | Disposable wearing article | Human Necessities | 214 | Expired |
| US5415649A | Disposable diapers | Human Necessities | 184 | Expired |
| US6120486A | Disposable diaper with three dimensional gathers | Human Necessities | 167 | Expired |
| US5281306A | Water-disintegrable cleaning sheet | Textiles; Paper | 155 | Expired |
| US5791465A | Moist wipe package | Performing Operations; Transporting | 153 | Expired |
| US5449353A | Disposable diaper | Human Necessities | 139 | Expired |
| US6648870B2 | Disposable diaper having upstanding walls for improving leakage prevention | Human Necessities | 138 | Expired |
| US6264643A | Pull-on type disposable diaper | Human Necessities | 128 | Expired |
| US6432579B1 | Method of manufacturing secondary battery negative electrode | Emerging Cross-Sectional Technologies | 126 | Expired |
| US6326525A | Absorbent article with free edge portions | Human Necessities | 124 | Expired |
| US5735839A | Shorts type disposable diaper | Human Necessities | 122 | Expired |
| US5836931A | Shorts type disposable diaper | Human Necessities | 120 | Expired |
| US4623342A | Disposable diaper | Human Necessities | 117 | Expired |
| US5233099A | Process for producing alcohol | Chemistry; Metallurgy | 113 | Expired |
| US6649810B1 | Disposable diaper with absorbent member | Human Necessities | 109 | Expired |
| US7048726B2 | Absorbent article | Human Necessities | 108 | Expired |
| US5891118A | Absorbent article | Human Necessities | 107 | Expired |
| US6891080B2 | Disposable diaper and absorbent member used therein | Human Necessities | 107 | Expired |
| US5810796A | Absorbent article | Human Necessities | 106 | Expired |
| US6440429B1 | Emulsified, water-in-oil type composition and skin cosmetic preparation | Human Necessities | 103 | Expired |
| US5403147A | Method for warehousing and delivery of articles | Performing Operations; Transporting | 99 | Expired |
| US5780047A | Patch | Human Necessities | 97 | Expired |
| US6044514A | Toothbrush | Emerging Cross-Sectional Technologies | 95 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.