Assignee
LYDALL INC
US·41 granted patents·11 pending applications·2,464 citations·filing 1979–2020
Top patents by PatentIndex Score
52 records- 0198US5190657ABlood filter and method of filtrationLYDALL INC·Filed 1991·Granted Mar 2, 1993·979 cites·44 claims
- 0296US4522876AIntegral textile composite fabricLYDALL INC·Filed 1984·Granted Jun 11, 1985·128 cites·26 claims
- 0392US4257791AFilterLYDALL INC·Filed 1979·Granted Mar 24, 1981·63 cites·27 claims
- 0490US6109389AAcoustical insulating barrier and method of making the barrierLYDALL INC·Filed 1999·Granted Aug 29, 2000·72 cites·62 claims
- 0589US6271156B1Fire-resistant core for a combustible fire-rated panelLYDALL INC·Filed 1998·Granted Aug 7, 2001·183 cites·30 claims
- 0687US6579350B2Air laid/wet laid gas filtration mediaLYDALL INC·Filed 2001·Granted Jun 17, 2003·80 cites·22 claims
- 0786US5424139AMetal heat insulatorLYDALL INC·Filed 1994·Granted Jun 13, 1995·59 cites·18 claims
- 0884US6521077B1Method for insulating a cryogenic containerLYDALL INC·Filed 1999·Granted Feb 18, 2003·69 cites·27 claims
- 0983US6123172AThermal and acoustical insulating shieldLYDALL INC·Filed 1999·Granted Sep 26, 2000·72 cites·44 claims
- 1082US5278002ABattery coverLYDALL INC·Filed 1992·Granted Jan 11, 1994·66 cites·24 claims
- 1181US4786670ACompressible non-asbestos high-temperature sheet material usable for gasketsLYDALL INC·Filed 1987·Granted Nov 22, 1988·83 cites·12 claims
- 1280US6092622AThermal and acoustical insulating shieldLYDALL INC·Filed 1998·Granted Jul 25, 2000·39 cites·44 claims
- 1379US5290449ABlood filter materialLYDALL INC·Filed 1993·Granted Mar 1, 1994·46 cites·26 claims
- 1477USRE39260EThermal and acoustical insulating shieldLYDALL INC·Filed 2002·Granted Sep 5, 2006·28 cites·88 claims
- 1577US4687697AComposite having improved transverse structural integrity and flexibility for use in high temperature environmentsLYDALL INC·Filed 1985·Granted Aug 18, 1987·60 cites·19 claims
- 1675US5053107ACeramic staple fiber and glass fiber paperLYDALL INC·Filed 1991·Granted Oct 1, 1991·54 cites·10 claims
- 1774US6231944B1Method for producing a thermal, acoustical and/or vibrational abatement shield and shield produced therebyLYDALL INC·Filed 1999·Granted May 15, 2001·35 cites·25 claims
- 1872US6596109B2Unitary multi-component filter mediaLYDALL INC·Filed 2001·Granted Jul 22, 2003·13 cites·9 claims
- 1970US5595659AFilter material for removing chlorine from cold water in preparing a human-consumable beverageLYDALL INC·Filed 1995·Granted Jan 21, 1997·41 cites·37 claims
- 2069US10066342B2Wet-laid nonwoven including thermoplastic fiberLYDALL INC·Filed 2015·Granted Sep 4, 2018·1 cites·19 claims
- 2163US4767687ABattery separatorLYDALL INC·Filed 1987·Granted Aug 30, 1988·27 cites·19 claims
- 2261US4499134AAbrasion and high temperature resistant composite and method of making the sameLYDALL INC·Filed 1983·Granted Feb 12, 1985·35 cites·22 claims
- 2360US9211491B2Air filtration media and processes for manufacturing the sameLYDALL INC·Filed 2012·Granted Dec 15, 2015·1 cites·19 claims
- 2460US4812145AProcess for the production of a battery separatorLYDALL INC·Filed 1988·Granted Mar 14, 1989·25 cites·15 claims
- 2559US11549631B2Asymmetrical stretch composite for pipe linerLYDALL INC·Filed 2018·Granted Jan 10, 2023·0 cites·18 claims
- 2657US5346930ARigid fiberboardLYDALL INC·Filed 1993·Granted Sep 13, 1994·23 cites·12 claims
- 2757US4948649AIntegral textile composite fabricLYDALL INC·Filed 1989·Granted Aug 14, 1990·29 cites·29 claims
- 2851US4350727ASynergistic textile compositeLYDALL INC·Filed 1981·Granted Sep 21, 1982·26 cites·24 claims
- 2950US2018363183A1Cross-lapped multilayer fibrous batt and method of making the sameLYDALL INC·Filed 2018·Application pending·0 cites
- 3050US2007077426A1Process and apparatus for making improved glass micro fibersLYDALL INC·Filed 2006·Application pending·0 cites
- 3148US5454946AFilter material for filtering leucocytes from bloodLYDALL INC·Filed 1994·Granted Oct 3, 1995·51 cites·20 claims
- 3248US5108817AMulti-component heat shieldLYDALL INC·Filed 1990·Granted Apr 28, 1992·19 cites·46 claims
- 3346US2014360146A1Wet-laid dual-layer air filtration media including a large diameter synthetic polymeric fiber in a top layer thereofLYDALL INC·Filed 2014·Application pending·0 cites
- 3446US2008176050A1Gypsum wallboard facingsLYDALL INC·Filed 2007·Application pending·0 cites
- 3545US10640057B2Heat shield with retention featureLYDALL INC·Filed 2016·Granted May 5, 2020·0 cites·20 claims
- 3645US7897529B2Substrate for carrying catalytic particlesLYDALL INC·Filed 2008·Granted Mar 1, 2011·0 cites·17 claims
- 3744US10344426B2Oleophobic insulating shield and method of makingLYDALL INC·Filed 2016·Granted Jul 9, 2019·0 cites·15 claims
- 3844US2018331340A1Multilayer battery separator and method of making sameLYDALL INC·Filed 2018·Application pending·0 cites
- 3942US2007084787A1Synthetic fiber pleatable filtration material and filterLYDALL INC·Filed 2006·Application pending·0 cites
- 4042US2016256806A1Composite filter media including a nanofiber layer formed directly onto a conductive layerLYDALL INC·Filed 2016·Application pending·0 cites
- 4140US2007163218A1Composite dual layer HEPA filterLYDALL INC·Filed 2006·Application pending·0 cites
- 4240US2021031707A1Electrically Conducting Textile for AutomobilesLYDALL INC·Filed 2020·Application pending·0 cites
- 4339US5953808AMethod of producing a sealed shielding unitLYDALL INC·Filed 1997·Granted Sep 21, 1999·10 cites·6 claims
- 4438US5768781AMethod of making a metal heat insulatorLYDALL INC·Filed 1996·Granted Jun 23, 1998·5 cites·28 claims
- 4537US10604087B2Heat shield with sealing memberLYDALL INC·Filed 2016·Granted Mar 31, 2020·0 cites·18 claims
- 4637US5749537AMethod of wrapping cryogenic insulation around an inner cryogenic tankLYDALL INC·Filed 1995·Granted May 12, 1998·8 cites·20 claims
- 4736US2018315410A1Contoured insulator with controlled air flow resistance, and method of makingLYDALL INC·Filed 2018·Application pending·0 cites
- 4836US2006277877A1High efficiency fuel filterLYDALL INC·Filed 2006·Application pending·0 cites
- 4935US5458905AAqueous dispersion of silicone oil and method of adding silicone oil to a solid substrateLYDALL INC·Filed 1993·Granted Oct 17, 1995·9 cites·18 claims
- 5034US5857640AMethod of wrapping cryogenic insulation around an inner cryogenic tankLYDALL INC·Filed 1997·Granted Jan 12, 1999·7 cites·11 claims
Showing the top 50 of 52 patent records by PatentIndex Score.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →