Unicharm Corporation
1,691Patents
900Active
1,691Granted
57Portfolio score
Filing activity: Aug 20, 1974 → Feb 23, 2024 · 328 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5092861A | Disposable garments | Human Necessities | 595 | Expired |
| US4868958A | Backing drum | Textiles; Paper | 521 | Expired |
| US5167653A | Disposable garments | Human Necessities | 229 | Expired |
| US4904251A | Disposable diaper | Human Necessities | 227 | Expired |
| US5387209A | Body fluid absorbent article | Human Necessities | 223 | Expired |
| US5147487A | Method of manufacturing disposable underpants by applying annular adhesive zones to the backsheet and top sheet for retaining elastic for leg holes | Emerging Cross-Sectional Technologies | 208 | Expired |
| US4743241A | Disposable absorbent underpants | Human Necessities | 206 | Expired |
| US4892528A | Disposable diaper | Human Necessities | 187 | Expired |
| US6210386A | Disposable pull-on undergarment with roll-up arrangement for its disposal | Human Necessities | 178 | Expired |
| US4704112A | Facing for absorptive articles and process for making it | Human Necessities | 178 | Expired |
| US5749865A | Absorbent article of pants type | Human Necessities | 176 | Expired |
| US5607416A | Disposable absorbent pad | Human Necessities | 174 | Expired |
| US4834740A | Method for making wearable articles | Human Necessities | 172 | Expired |
| US5171239A | Disposable garments | Human Necessities | 166 | Expired |
| US6682515B1 | Disposable absorbent sanitary article | Human Necessities | 165 | Expired |
| US5163932A | Disposable wearing article of pants type | Performing Operations; Transporting | 162 | Expired |
| US6312420A | Pants-type disposable diaper | Human Necessities | 161 | Expired |
| US5851204A | Disposable absorbent article | Human Necessities | 157 | Expired |
| US5246432A | Disposable absorbent articles | Human Necessities | 156 | Expired |
| US5114420A | Disposable diaper | Human Necessities | 156 | Expired |
| US6174302A | Disposable diaper | Human Necessities | 155 | Expired |
| US5188627A | Disposable garments of pants type | Human Necessities | 155 | Expired |
| US6568530B2 | Information label for target user, and display package having the label | Physics | 155 | Expired |
| US6911574B1 | Body fluids absorbent article | Human Necessities | 148 | Expired |
| US5827257A | Urine-absorbent bag | Human Necessities | 148 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.