Inventor · disambiguated record
Donald S. Sypula
Also filed as: SYPULA DONALD · SYPULA DONALD S
42 granted patents·1,273 citations·filing 1979–1998
98Inventor score
Top patents by PatentIndex Score
42 records- 0197US5300339ADevelopment system coatingsXEROX CORP·Filed 1993·Granted Apr 5, 1994·61 cites·9 claims
- 0295US6201945B1Polyimide and doped metal oxide fuser componentsXEROX CORP·Filed 1998·Granted Mar 13, 2001·72 cites·26 claims
- 0395US5409557AMethod of manufacturing a reinforced seamless intermediate transfer memberXEROX CORP·Filed 1994·Granted Apr 25, 1995·75 cites·33 claims
- 0495US5298956AReinforced seamless intermediate transfer memberXEROX CORP·Filed 1992·Granted Mar 29, 1994·66 cites·36 claims
- 0595US5039598AIonographic imaging systemXEROX CORP·Filed 1989·Granted Aug 13, 1991·55 cites·26 claims
- 0695US4515882AOvercoated electrophotographic imaging systemXEROX CORP·Filed 1984·Granted May 7, 1985·44 cites·15 claims
- 0794US5336577ASingle layer photoreceptorXEROX CORP·Filed 1993·Granted Aug 9, 1994·66 cites·28 claims
- 0894US4952293APolymer electrodeposition processXEROX CORP·Filed 1989·Granted Aug 28, 1990·56 cites·20 claims
- 0993US5340679AIntermediate transfer element coatingsXEROX CORP·Filed 1993·Granted Aug 23, 1994·50 cites·21 claims
- 1089US5922440APolyimide and doped metal oxide intermediate transfer componentsXEROX CORP·Filed 1998·Granted Jul 13, 1999·63 cites·24 claims
- 1187US5243392AImaging apparatus and process with intermediate transfer elementXEROX CORP·Filed 1992·Granted Sep 7, 1993·33 cites·30 claims
- 1287US4747992AProcess for fabricating a beltSYPULA DONALD S·Filed 1986·Granted May 31, 1988·65 cites·17 claims
- 1385US5493369AApparatus and method for improved liquid developer image conditioningXEROX CORP·Filed 1994·Granted Feb 20, 1996·29 cites·29 claims
- 1484US5525446AIntermediate transfer member of thermoplastic film forming polymer layer laminated onto a base layerXEROX CORP·Filed 1994·Granted Jun 11, 1996·31 cites·20 claims
- 1584US5386277ADeveloping apparatus including a coated developer rollerXEROX CORP·Filed 1993·Granted Jan 31, 1995·27 cites·14 claims
- 1683US4711833APowder coating process for seamless substratesXEROX CORP·Filed 1986·Granted Dec 8, 1987·46 cites·58 claims
- 1782US5258461AElectrocodeposition of polymer blends for photoreceptor substratesXEROX CORP·Filed 1990·Granted Nov 2, 1993·27 cites·7 claims
- 1881US5985419APolyurethane and doped metal oxide transfer componentsXEROX CORP·Filed 1998·Granted Nov 16, 1999·40 cites·23 claims
- 1980US5153618AIonographic imaging systemXEROX CORP·Filed 1991·Granted Oct 6, 1992·27 cites·16 claims
- 2078US5268259AProcess for preparing an electroded donor rollXEROX CORP·Filed 1992·Granted Dec 7, 1993·32 cites·22 claims
- 2177US5177538APhenolic graphite donor rollXEROX CORP·Filed 1991·Granted Jan 5, 1993·22 cites·18 claims
- 2276US5448342ADevelopment system coatingsXEROX CORP·Filed 1993·Granted Sep 5, 1995·29 cites·4 claims
- 2376US5064509AMultilayer belts formed by electrodepositionXEROX CORP·Filed 1990·Granted Nov 12, 1991·23 cites·31 claims
- 2475US5995796AHaloelastomer and doped metal oxide film componentXEROX CORP·Filed 1998·Granted Nov 30, 1999·30 cites·20 claims
- 2575US4256818AMagnetic or electrostatographic imaging and high speed fusing method uses polyamide resin in tonerXEROX CORP·Filed 1979·Granted Mar 17, 1981·16 cites·2 claims
- 2674US5876636AHaleoelastomer and doped metal oxide compositionsXEROX CORP·Filed 1998·Granted Mar 2, 1999·22 cites·19 claims
- 2774US5481341ARoller for controlling application of carrier liquidXEROX CORP·Filed 1993·Granted Jan 2, 1996·19 cites·51 claims
- 2872US5585903AFluorocarbon elastomer single layer intermediate transfer memberXEROX CORP·Filed 1994·Granted Dec 17, 1996·18 cites·29 claims
- 2968US5215841AElectrophotographic imaging member with overcoatings containing fullerenesXEROX CORP·Filed 1991·Granted Jun 1, 1993·16 cites·20 claims
- 3063US5445720ASubstrates, belts and electrostatographic imaging members, and methods of makingXEROX CORP·Filed 1993·Granted Aug 29, 1995·15 cites·18 claims
- 3161US5073434AIonographic imaging systemXEROX CORP·Filed 1989·Granted Dec 17, 1991·18 cites·10 claims
- 3259US4272600AMagnetic toners containing cubical magnetiteXEROX CORP·Filed 1980·Granted Jun 9, 1981·11 cites·9 claims
- 3356US5120628ATransparent photoreceptor overcoatingsXEROX CORP·Filed 1989·Granted Jun 9, 1992·9 cites·21 claims
- 3456US5096796ABlocking and overcoating layers for electroreceptorsXEROX CORP·Filed 1990·Granted Mar 17, 1992·16 cites·39 claims
- 3550US5714243ADielectric image receiving memberXEROX CORP·Filed 1995·Granted Feb 3, 1998·13 cites·17 claims
- 3644US4293627AProcess of developing magnetic images and dry magnetic toner compositionsXEROX CORP·Filed 1980·Granted Oct 6, 1981·7 cites·3 claims
- 3743US5571463AMethod of fabricating a microporous surface blotter rollXEROX CORP·Filed 1996·Granted Nov 5, 1996·6 cites·6 claims
- 3842US5745826ALiquid toner image conditioning roll having image protection surface layerXEROX CORP·Filed 1997·Granted Apr 28, 1998·6 cites·8 claims
- 3941US5567565AMethod for transferring a toner imageXEROX CORP·Filed 1994·Granted Oct 22, 1996·7 cites·23 claims
- 4035US6759125B1Development system coatingsXEROX CORP·Filed 1994·Granted Jul 6, 2004·2 cites·6 claims
- 4131US5919514AProcess for preparing electroded donor rollsXEROX CORP·Filed 1992·Granted Jul 6, 1999·2 cites·24 claims
- 4229US4282296AHigh speed magnetographic imaging processXEROX CORP·Filed 1980·Granted Aug 4, 1981·1 cites·5 claims
Join the waitlist — get patent alerts
Get an alert when Donald S. Sypula files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →