Assignee
GELMAN SCIENCES INC
US·44 granted patents·2,595 citations·filing 1978–1994
Top patents by PatentIndex Score
44 records- 0194US4374232AGraft copolymer membrane and processes of manufacturing and using the sameGELMAN SCIENCES INC·Filed 1981·Granted Feb 15, 1983·85 cites·21 claims
- 0293US5601711ASelective separation filter deviceGELMAN SCIENCES INC·Filed 1994·Granted Feb 11, 1997·161 cites·9 claims
- 0392US5308483AMicroporous filtration funnel assemblyGELMAN SCIENCES INC·Filed 1992·Granted May 3, 1994·187 cites·15 claims
- 0492US5209849AHydrophilic microporous polyolefin membraneGELMAN SCIENCES INC·Filed 1992·Granted May 11, 1993·107 cites·14 claims
- 0591US5151189ACationic charge modified microporous membraneGELMAN SCIENCES INC·Filed 1990·Granted Sep 29, 1992·103 cites·38 claims
- 0690US5156780Aprocess for treating a porous substrate to achieve improved water and oil repellencyGELMAN SCIENCES INC·Filed 1990·Granted Oct 20, 1992·130 cites·17 claims
- 0789US4964990AFiltration membranes and method of making the sameGELMAN SCIENCES INC·Filed 1990·Granted Oct 23, 1990·87 cites·13 claims
- 0889US4466931AMethod for manufacturing microporous membraneGELMAN SCIENCES INC·Filed 1982·Granted Aug 21, 1984·65 cites·7 claims
- 0988US5472606ASelf-supporting, pleated, spirally wound filterGELMAN SCIENCES INC·Filed 1994·Granted Dec 5, 1995·72 cites·9 claims
- 1088US5126189AHydrophobic microporous membraneGELMAN SCIENCES INC·Filed 1987·Granted Jun 30, 1992·72 cites·24 claims
- 1187US5269931ACationic charge modified microporous membranesGELMAN SCIENCES INC·Filed 1991·Granted Dec 14, 1993·88 cites·39 claims
- 1286US5531893AInter-penetrating network charge modified microporous membraneGELMAN SCIENCES INC·Filed 1993·Granted Jul 2, 1996·62 cites·31 claims
- 1386US4906260ASelf-priming intravenous filterGELMAN SCIENCES INC·Filed 1989·Granted Mar 6, 1990·92 cites·9 claims
- 1486US4468321AFilter device with magnetic filter clampGELMAN SCIENCES INC·Filed 1983·Granted Aug 28, 1984·100 cites·7 claims
- 1585US5510243AMultiple chromogen enzyme targeting (MCET) for use in bacterial contamination monitoringGELMAN SCIENCES INC·Filed 1994·Granted Apr 23, 1996·64 cites·8 claims
- 1685US5114585ACharged porous filterGELMAN SCIENCES INC·Filed 1989·Granted May 19, 1992·68 cites·23 claims
- 1785US4369112AFilter deviceGELMAN SCIENCES INC·Filed 1981·Granted Jan 18, 1983·54 cites·5 claims
- 1884US5403482ASelf-supporting, pleated, spirally wound filter and the corresponding process of makingGELMAN SCIENCES INC·Filed 1993·Granted Apr 4, 1995·58 cites·20 claims
- 1984US5021160AStrongly acidic microporous membranes for cation exchangeGELMAN SCIENCES INC·Filed 1990·Granted Jun 4, 1991·64 cites·26 claims
- 2083US5178765AHydrophilic membranes prepared from polyethersulfone/poly-2-oxazoline/polyvinylpyrrolidone blendGELMAN SCIENCES INC·Filed 1991·Granted Jan 12, 1993·57 cites·20 claims
- 2182US5108607AFiltration membranes and method of making the sameGELMAN SCIENCES INC·Filed 1990·Granted Apr 28, 1992·59 cites·4 claims
- 2282USD320273SMedical filter housingGELMAN SCIENCES INC·Filed 1989·Granted Sep 24, 1991·28 cites·1 claims
- 2382US4459139ADisposable filter device and liquid aspirating system incorporating sameGELMAN SCIENCES INC·Filed 1981·Granted Jul 10, 1984·188 cites·8 claims
- 2480US5141639AVacuum filter assemblyGELMAN SCIENCES INC·Filed 1991·Granted Aug 25, 1992·61 cites·20 claims
- 2580US4362047AFilter device for cigarette testingGELMAN SCIENCES INC·Filed 1981·Granted Dec 7, 1982·44 cites·6 claims
- 2679US5277812AInter-penetrating network charge modified microporous membraneGELMAN SCIENCES INC·Filed 1993·Granted Jan 11, 1994·46 cites·12 claims
- 2777US4184360AFilter holder for cigarette research testingGELMAN SCIENCES INC·Filed 1978·Granted Jan 22, 1980·39 cites·2 claims
- 2876US5076935AFiltration membranes made from polyethersulfone/phenoxy resin blendGELMAN SCIENCES INC·Filed 1990·Granted Dec 31, 1991·39 cites·20 claims
- 2975US4444661AFilter deviceGELMAN SCIENCES INC·Filed 1982·Granted Apr 24, 1984·33 cites·4 claims
- 3069US4277332AWater purifierGELMAN SCIENCES INC·Filed 1980·Granted Jul 7, 1981·33 cites·10 claims
- 3161US4676771AArterial blood filterGELMAN SCIENCES INC·Filed 1986·Granted Jun 30, 1987·85 cites·23 claims
- 3257US4824870APolyaldehyde activated membranesGELMAN SCIENCES INC·Filed 1987·Granted Apr 25, 1989·19 cites·7 claims
- 3355US5200073APolymeric film filter assemblyGELMAN SCIENCES INC·Filed 1991·Granted Apr 6, 1993·22 cites·21 claims
- 3455US4319996AFilter with initially flat membrane and curved membrane supportGELMAN SCIENCES INC·Filed 1980·Granted Mar 16, 1982·56 cites·4 claims
- 3554USD360464SGas separating filterGELMAN SCIENCES INC·Filed 1994·Granted Jul 18, 1995·8 cites·1 claims
- 3641US4961852APolyaldehyde activated membranesGELMAN SCIENCES INC·Filed 1989·Granted Oct 9, 1990·11 cites·7 claims
- 3740US5160626ABlotting methods using polyaldehyde activated membranesGELMAN SCIENCES INC·Filed 1990·Granted Nov 3, 1992·10 cites·19 claims
- 3836US4292162ABuffer composition and method for the electrophoretic separation of proteinsGELMAN SCIENCES INC·Filed 1980·Granted Sep 29, 1981·6 cites·26 claims
- 3933US4992172ABlotting methods using polyaldehyde activated membranesGELMAN SCIENCES INC·Filed 1989·Granted Feb 12, 1991·5 cites·6 claims
- 4033US4351711AElectrophoresis method for detecting glycosylated hemoglobin in bloodGELMAN SCIENCES INC·Filed 1981·Granted Sep 28, 1982·6 cites·8 claims
- 4131US5033479ALaser beam resistant materialsGELMAN SCIENCES INC·Filed 1990·Granted Jul 23, 1991·12 cites·12 claims
- 4231US4321119ABuffer composition and method for the electrophoretic separation of proteinsGELMAN SCIENCES INC·Filed 1979·Granted Mar 23, 1982·4 cites·7 claims
- 4327US5104536APolymeric film filter assemblyGELMAN SCIENCES INC·Filed 1991·Granted Apr 14, 1992·3 cites·25 claims
- 4426US4292154ABuffer composition and method for the electrophoretic separation of proteinsGELMAN SCIENCES INC·Filed 1980·Granted Sep 29, 1981·2 cites·11 claims
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