Assignee
SPECTRUM SCIENCES BV
NL·47 granted patents·1,318 citations·filing 1987–1993
Top patents by PatentIndex Score
47 records- 0197US5089856AImage transfer apparatus incorporating an internal heaterSPECTRUM SCIENCES BV·Filed 1989·Granted Feb 18, 1992·65 cites·22 claims
- 0297US4974027AImaging system with compactor and squeegeeSPECTRUM SCIENCES BV·Filed 1989·Granted Nov 27, 1990·67 cites·17 claims
- 0396US5028964AImaging system with rigidizer and intermediate transfer memberSPECTRUM SCIENCES BV·Filed 1989·Granted Jul 2, 1991·62 cites·31 claims
- 0495US5335054AImage transfer apparatus including intermediate transfer blanketSPECTRUM SCIENCES BV·Filed 1993·Granted Aug 2, 1994·47 cites·23 claims
- 0595US5192638AToner for use in compositions for developing latent electrostatic images, method of making the same, and liquid composition using the improved tonerSPECTRUM SCIENCES BV·Filed 1991·Granted Mar 9, 1993·56 cites·8 claims
- 0694US5276492AImaging method and apparatusSPECTRUM SCIENCES BV·Filed 1990·Granted Jan 4, 1994·59 cites·36 claims
- 0794US5047808AImage transfer apparatus including a compliant transfer memberSPECTRUM SCIENCES BV·Filed 1989·Granted Sep 10, 1991·56 cites·15 claims
- 0893US4984025AImaging system with intermediate transfer memberSPECTRUM SCIENCES BV·Filed 1989·Granted Jan 8, 1991·45 cites·36 claims
- 0991US5300390ALiquid toner compositionSPECTRUM SCIENCES BV·Filed 1992·Granted Apr 5, 1994·44 cites·15 claims
- 1090US5346796AElectrically stabilized liquid tonersSPECTRUM SCIENCES BV·Filed 1992·Granted Sep 13, 1994·82 cites·20 claims
- 1189US5289238ALiquid toner developing apparatus having metal blade with insulating coating in contact with developing rollerSPECTRUM SCIENCES BV·Filed 1991·Granted Feb 22, 1994·42 cites·15 claims
- 1289US5266435ALiquid toners containing charge directors and components for stabilizing their electrical propertiesSPECTRUM SCIENCES BV·Filed 1991·Granted Nov 30, 1993·38 cites·27 claims
- 1388US5280326AImaging systemSPECTRUM SCIENCES BV·Filed 1992·Granted Jan 18, 1994·31 cites·32 claims
- 1487US4985732AElectrostatic separatorSPECTRUM SCIENCES BV·Filed 1989·Granted Jan 15, 1991·35 cites·27 claims
- 1586US5225306ACharge priming agents for liquid tonersSPECTRUM SCIENCES BV·Filed 1991·Granted Jul 6, 1993·38 cites·36 claims
- 1686US5117263ALiquid toner developerSPECTRUM SCIENCES BV·Filed 1991·Granted May 26, 1992·36 cites·13 claims
- 1785US5231454ACharge director replenishment system and method for a liquid toner developing apparatusSPECTRUM SCIENCES BV·Filed 1992·Granted Jul 27, 1993·30 cites·23 claims
- 1885US5047306AHumidity tolerant charge director compositionsSPECTRUM SCIENCES BV·Filed 1989·Granted Sep 10, 1991·25 cites·37 claims
- 1983US4999677AImaging system with rigidizerSPECTRUM SCIENCES BV·Filed 1989·Granted Mar 12, 1991·25 cites·18 claims
- 2081US5255058ALiquid developer imaging system using a spaced developing roller and a toner background removal surfaceSPECTRUM SCIENCES BV·Filed 1991·Granted Oct 19, 1993·32 cites·46 claims
- 2180US5166734AImaging system including pre-transfer dischargeSPECTRUM SCIENCES BV·Filed 1991·Granted Nov 24, 1992·22 cites·27 claims
- 2278US5286593ALiquid developer containing stabilized charge director compositionSPECTRUM SCIENCES BV·Filed 1992·Granted Feb 15, 1994·22 cites·7 claims
- 2378US5034778ABackground cleaning system for liquid developer imaging apparatusSPECTRUM SCIENCES BV·Filed 1990·Granted Jul 23, 1991·25 cites·9 claims
- 2477US5278615ALiquid toner imaging systemSPECTRUM SCIENCES BV·Filed 1990·Granted Jan 11, 1994·22 cites·19 claims
- 2577US5208130ACharge director compositions for liquid developerSPECTRUM SCIENCES BV·Filed 1990·Granted May 4, 1993·26 cites·46 claims
- 2677US5148222ALiquid developer systemSPECTRUM SCIENCES BV·Filed 1990·Granted Sep 15, 1992·24 cites·34 claims
- 2774US5208637ALiquid toner replenishment systemSPECTRUM SCIENCES BV·Filed 1990·Granted May 4, 1993·37 cites·26 claims
- 2874US5078504ADispersion apparatusSPECTRUM SCIENCES BV·Filed 1989·Granted Jan 7, 1992·38 cites·17 claims
- 2972US5286948AFusing apparatus and methodSPECTRUM SCIENCES BV·Filed 1992·Granted Feb 15, 1994·19 cites·20 claims
- 3072US5264313ACharge director compositionSPECTRUM SCIENCES BV·Filed 1990·Granted Nov 23, 1993·18 cites·8 claims
- 3167US5270776AMethod for fusing developed imageSPECTRUM SCIENCES BV·Filed 1988·Granted Dec 14, 1993·12 cites·2 claims
- 3267US5157238AFusing apparatus and methodSPECTRUM SCIENCES BV·Filed 1989·Granted Oct 20, 1992·14 cites·29 claims
- 3361US5220384ALiquid developer based imaging machine using a developing electrodeSPECTRUM SCIENCES BV·Filed 1989·Granted Jun 15, 1993·12 cites·19 claims
- 3461US5121164AMethod for maintaining a liquid compositionSPECTRUM SCIENCES BV·Filed 1988·Granted Jun 9, 1992·12 cites·4 claims
- 3557US5268687ALaser scanning apparatusSPECTRUM SCIENCES BV·Filed 1990·Granted Dec 7, 1993·18 cites·15 claims
- 3656US5315321ALaser scanning apparatus with a positionable relay mirrorSPECTRUM SCIENCES BV·Filed 1993·Granted May 24, 1994·17 cites·18 claims
- 3753US5104717AInk and multistrike ribbons incorporating the sameSPECTRUM SCIENCES BV·Filed 1989·Granted Apr 14, 1992·12 cites·35 claims
- 3850US4945387AImage transfer apparatus and method using tension transfer memberSPECTRUM SCIENCES BV·Filed 1988·Granted Jul 31, 1990·8 cites·52 claims
- 3948US5155001ALiquid developer method with replenishment of charge directorSPECTRUM SCIENCES BV·Filed 1991·Granted Oct 13, 1992·7 cites·18 claims
- 4045US4912562AMethod of and means for printing a multilevel representation of an imageSPECTRUM SCIENCES BV·Filed 1989·Granted Mar 27, 1990·10 cites·33 claims
- 4139US5012300ATwo-color imaging system and processSPECTRUM SCIENCES BV·Filed 1988·Granted Apr 30, 1991·4 cites·50 claims
- 4238US5004165ADispersion apparatusSPECTRUM SCIENCES BV·Filed 1989·Granted Apr 2, 1991·9 cites·30 claims
- 4335USD334565SImage plotterSPECTRUM SCIENCES BV·Filed 1990·Granted Apr 6, 1993·3 cites·1 claims
- 4434US5048762ADispersion apparatusSPECTRUM SCIENCES BV·Filed 1990·Granted Sep 17, 1991·10 cites·26 claims
- 4531US5146276ARotatable focusing means and variable magnification electrophotocopierSPECTRUM SCIENCES BV·Filed 1987·Granted Sep 8, 1992·1 cites·10 claims
- 4631US5108866AProcess for preparing liquid toner compositionSPECTRUM SCIENCES BV·Filed 1988·Granted Apr 28, 1992·1 cites·12 claims
- 4729US5262829AComposition of matter useful for fusing of developed images and method and apparatus using sameSPECTRUM SCIENCES BV·Filed 1992·Granted Nov 16, 1993·0 cites·67 claims
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