DARAMIC, LLC
116Patents
92Active
116Granted
52Portfolio score
Filing activity: Jan 18, 1995 → Mar 11, 2024 · 9 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6120939A | Meltblown fiber battery separator | Emerging Cross-Sectional Technologies | 42 | Expired |
| US6124059A | Separator for sealed lead accumulators | Emerging Cross-Sectional Technologies | 38 | Expired |
| US5962161A | Recombinant battery separator | Emerging Cross-Sectional Technologies | 31 | Expired |
| US6703161B2 | Multilayer separator for lead-acid batteries | Emerging Cross-Sectional Technologies | 27 | Expired |
| US6689509B2 | Laminated multilayer separator for lead-acid batteries | Emerging Cross-Sectional Technologies | 25 | Expired |
| US7498369B2 | Ultrahigh molecular weight polyethylene articles and method of manufacture | Emerging Cross-Sectional Technologies | 25 | Expired |
| US7445735B2 | Method of making microporous material | Emerging Cross-Sectional Technologies | 22 | Expired |
| US5618642A | Battery separator with sodium sulfate | Emerging Cross-Sectional Technologies | 21 | Expired |
| US7425387B2 | Separator for a lead storage battery | Emerging Cross-Sectional Technologies | 20 | Expired |
| US5478677A | Composite gauntlet/separator | Emerging Cross-Sectional Technologies | 19 | Expired |
| US7094498B2 | Battery separator with battlemented rib | Emerging Cross-Sectional Technologies | 16 | Expired |
| US5776630A | Separator with longitudinal and transverse ribs for use in accumulators | Emerging Cross-Sectional Technologies | 15 | Expired |
| US6869726B2 | Reinforced multilayer separator for lead-acid batteries | Emerging Cross-Sectional Technologies | 12 | Expired |
| US8404378B2 | Battery separator for a storage battery | Emerging Cross-Sectional Technologies | 11 | Active |
| US7682536B2 | Method of making a microporous material | Emerging Cross-Sectional Technologies | 10 | Active |
| US5605549A | Battery electrolyte pad with gelling agents and method | Emerging Cross-Sectional Technologies | 9 | Expired |
| US6852444B2 | Reinforced multilayer separator for lead-acid batteries | Emerging Cross-Sectional Technologies | 8 | Expired |
| US6692868B2 | Melt blown battery separator | Emerging Cross-Sectional Technologies | 8 | Expired |
| US8027147B2 | Ultracapacitor and method of manufacturing the same | Emerging Cross-Sectional Technologies | 7 | Active |
| US9190648B2 | Lead-acid battery separator having enhanced stiffness | Emerging Cross-Sectional Technologies | 6 | Active |
| US6403264B1 | Lead/sulphuric acid-accumulator, separator for lead/sulphuric acid accumulators and process to reduce the formation of colored deposits in a lead/sulphuric acid accumulators | Emerging Cross-Sectional Technologies | 6 | Expired |
| USD847746S1 | Battery separator | General | 6 | Active |
| US7238744B2 | Ultrahigh molecular weight polyethylene articles and method of manufacture | Emerging Cross-Sectional Technologies | 6 | Expired |
| US10119025B2 | Separators, batteries, systems, and methods for idle start stop vehicles | Emerging Cross-Sectional Technologies | 6 | Active |
| US6139795A | Use of microporous polyolefin for absorbing sweat and other bodily exhalations | Human Necessities | 5 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.