Polymer Processing Research Inst., Ltd.
15Patents
0Active
15Granted
33Portfolio score
Filing activity: Dec 4, 1990 → Jul 6, 1998
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5312500A | Non-woven fabric and method and apparatus for making the same | Textiles; Paper | 54 | Expired |
| US5840633A | Nonwoven fabric and method of making the same | Emerging Cross-Sectional Technologies | 47 | Expired |
| US5789328A | Bulky nonwoven fabric and method for producing the same | Emerging Cross-Sectional Technologies | 43 | Expired |
| US5307609A | Apparatus for wrapping and method therefor | Performing Operations; Transporting | 30 | Expired |
| US5290377A | Method for producing reticular nonwoven fabric | Emerging Cross-Sectional Technologies | 28 | Expired |
| US5729878A | Web spreading apparatus | Performing Operations; Transporting | 27 | Expired |
| US6054086A | Process of making high-strength yarns | Performing Operations; Transporting | 21 | Expired |
| US5265506A | Method for fabricating a perforated film and its apparatus | Emerging Cross-Sectional Technologies | 20 | Expired |
| US5826314A | Device for transversely stretching web | Performing Operations; Transporting | 20 | Expired |
| US6132661A | Longitudinally stretched nonwoven fabric and method for producing the same | Textiles; Paper | 15 | Expired |
| US6048808A | Nonwoven fabric and method of making the same | Emerging Cross-Sectional Technologies | 14 | Expired |
| US6051175A | Process for producing filament and filament assembly composed of thermotropic liquid crystal polymer | Emerging Cross-Sectional Technologies | 9 | Expired |
| US5287742A | Device for detecting defects of web | Physics | 8 | Expired |
| US5240160A | Rotary splitting tool to fabricate a fibrillated web | Emerging Cross-Sectional Technologies | 6 | Expired |
| US6063492A | Adhesive tape and its base fabric | Emerging Cross-Sectional Technologies | 5 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.