UNITIKA LTD.
391Patents
83Active
391Granted
46Portfolio score
Filing activity: Jan 21, 1974 → Apr 28, 2023 · 28 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4655211A | Hemostatic agent | Human Necessities | 265 | Expired |
| US4265233A | Material for wound healing | Human Necessities | 151 | Expired |
| US4536387A | Anti-cancer device | Human Necessities | 134 | Expired |
| US7807773B2 | Biodegradable polyester resin composition, preparation method therefor, and foamed article and molded article produced therefrom | Chemistry; Metallurgy | 112 | Expired |
| US4642104A | Urethral catheter capable of preventing urinary tract infection and process for producing the same | Emerging Cross-Sectional Technologies | 100 | Expired |
| US4874666A | Polyolefinic biconstituent fiber and nonwove fabric produced therefrom | Emerging Cross-Sectional Technologies | 93 | Expired |
| US4902503A | Antimicrobial latex composition | Human Necessities | 90 | Expired |
| US5068141A | Polyolefin-type nonwoven fabric and method of producing the same | Emerging Cross-Sectional Technologies | 88 | Expired |
| US4651725A | Wound dressing | Human Necessities | 87 | Expired |
| US4675347A | Antimicrobial latex composition | Chemistry; Metallurgy | 78 | Expired |
| US5688582A | Biodegradable filament nonwoven fabrics and method of manufacturing the same | Emerging Cross-Sectional Technologies | 69 | Expired |
| US5225296A | Electrode and method of producing the same | Emerging Cross-Sectional Technologies | 68 | Expired |
| US5414042A | Reinforced polyamide resin composition and process for producing the same | Chemistry; Metallurgy | 64 | Expired |
| US4539234A | Urethral catheter capable of preventing urinary tract infection and process for producing the same | Emerging Cross-Sectional Technologies | 63 | Expired |
| US5304308A | Control method in double-tank-type intermittent aeration activated sludge process | Emerging Cross-Sectional Technologies | 59 | Expired |
| US5912139A | Test strip | Emerging Cross-Sectional Technologies | 58 | Expired |
| US5648027A | Porous carbonaceous material and a method for producing the same | Emerging Cross-Sectional Technologies | 51 | Expired |
| US4365041A | Resin composition comprising water-soluble polyamide and vinyl alcohol-based polymer | Chemistry; Metallurgy | 47 | Expired |
| US4273873A | Preparation of antithrombogenic polymeric materials | Chemistry; Metallurgy | 46 | Expired |
| US4636424A | Moisture-permeable waterproof laminated fabric and process for producing the same | Emerging Cross-Sectional Technologies | 43 | Expired |
| US4981749A | Polyolefin-type nonwoven fabric and method of producing the same | Emerging Cross-Sectional Technologies | 41 | Expired |
| US4378435A | Process for providing enzyme activity to a solid surface | Human Necessities | 38 | Expired |
| US4473401A | Amorphous iron-based alloy excelling in fatigue property | Electricity | 38 | Expired |
| US4699135A | Shaped chitin body | Chemistry; Metallurgy | 38 | Expired |
| US4617235A | Antistatic synthetic fibers | Emerging Cross-Sectional Technologies | 37 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.