Inventor · disambiguated record
Wilhelmus Janssens
Also filed as: HEUGEBAERT FRANS C · JANSSENS WILHELMUS · JANSSENS WILHELMUS G E · JANSSENS WILHELMUS GERARDUS E
83 granted patents·722 citations·filing 1973–1996
99Inventor score
Top patents by PatentIndex Score
83 records- 0193US4232107APhotographic material suited for use in diffusion transfer photography and method of diffusion transfer photography using such materialAGFA GEVAERT NV·Filed 1979·Granted Nov 4, 1980·34 cites·12 claims
- 0292US4391047AHand-held hair dryerPHILIPS CORP·Filed 1980·Granted Jul 5, 1983·68 cites·5 claims
- 0392US3958815APressure-sensitive recording materialsAGFA GEVAERT NV·Filed 1973·Granted May 25, 1976·28 cites·19 claims
- 0489US3979394ADuplo quinoline compoundsAGFA GEVAERT NV·Filed 1974·Granted Sep 7, 1976·28 cites·2 claims
- 0586US5589317AThermal transfer imaging processAGFA GEVAERT NV·Filed 1995·Granted Dec 31, 1996·15 cites·9 claims
- 0686USD279858SMixer standPHILIPS CORP·Filed 1983·Granted Jul 30, 1985·20 cites·1 claims
- 0782US4987043AMethod for the production of a multicolor filter arrayAGFA GEVAERT NV·Filed 1989·Granted Jan 22, 1991·57 cites·12 claims
- 0882USD305971SFryerPHILIPS CORP·Filed 1986·Granted Feb 13, 1990·19 cites·1 claims
- 0982US4371604APhotographic material suited for use in diffusion transfer photographyAGFA GEVAERT NV·Filed 1981·Granted Feb 1, 1983·18 cites·12 claims
- 1082USD262061SHair dryerPHILIPS CORP·Filed 1979·Granted Nov 24, 1981·14 cites·1 claims
- 1181US5169828ABlack colored thermal dye sublimation transfer donor elementAGFA GEVAERT NV·Filed 1991·Granted Dec 8, 1992·27 cites·20 claims
- 1280US3957288AThermographic recording materialAGFA GEVAERT NV·Filed 1973·Granted May 18, 1976·29 cites·28 claims
- 1377US4203765AEtch bleaching liquid with iron(III)ionsAGFA GEVAERT NV·Filed 1978·Granted May 20, 1980·26 cites·10 claims
- 1474US4353975ADye-diffusion transfer processAGFA GEVAERT NV·Filed 1981·Granted Oct 12, 1982·14 cites·11 claims
- 1572US4458002AMethod and materials for improving the color balance of photographic multicolor images using contact screenAGFA GEVAERT NV·Filed 1983·Granted Jul 3, 1984·15 cites·11 claims
- 1672US4269924APhotographic material suited for the production of multicolor images by means of diffusion transfer of complexed silver halideAGFA GEVAERT NV·Filed 1979·Granted May 26, 1981·12 cites·10 claims
- 1768US4360581AColor photographic recording material containing non-diffusing electron donor compoundsAGFA GEVAERT AG·Filed 1980·Granted Nov 23, 1982·7 cites·3 claims
- 1867US5858913AReceiving element for use in thermal transfer printingAGFA GEVAERT·Filed 1995·Granted Jan 12, 1999·5 cites·11 claims
- 1967USD280970SCan-openerPHILIPS CORP·Filed 1983·Granted Oct 15, 1985·9 cites·1 claims
- 2066US5547809AThermal transfer imaging system based on the heat transfer of a reducing agent for reducing a silver source to metallic silverAGFA GEVAERT NV·Filed 1995·Granted Aug 20, 1996·5 cites·7 claims
- 2164US5476746ABlack colored dye mixture for use according to thermal dye sublimation transferAGFA GEVAERT NV·Filed 1993·Granted Dec 19, 1995·15 cites·13 claims
- 2264USD248576SHair dryer casingPHILIPS CORP·Filed 1976·Granted Jul 18, 1978·6 cites·1 claims
- 2363US5753352ALaminated security document containing fluorescent dye giving light pipingAGFA GEVAERT NV·Filed 1996·Granted May 19, 1998·27 cites·11 claims
- 2461US4011352AThermographic process of producing an imageAGFA GEVAERT NV·Filed 1975·Granted Mar 8, 1977·17 cites·12 claims
- 2559US4814255AMordanting polymers for acid dyesAGFA GEVAERT NV·Filed 1987·Granted Mar 21, 1989·7 cites·7 claims
- 2657US5328887AThermally transferable fluorescent compoundsAGFA GEVAERT NV·Filed 1992·Granted Jul 12, 1994·8 cites·10 claims
- 2757US4861818AMethod for the preparation of stable aqueous dispersions of polymer beads and the use of these dispersions in photographic elementsAGFA GEVAERT NV·Filed 1986·Granted Aug 29, 1989·17 cites·8 claims
- 2857US4148659APhotographic material containing an organo-tellurium compound a 1,4-dihydropyridine photo oxidizing agent and the use thereof in heat developmentAGFA GEVAERT NV·Filed 1978·Granted Apr 10, 1979·4 cites·14 claims
- 2956US4605613ABallasted dye compounds with linkages containing three aromatic nuclei for use in a dye diffusion transfer process and elementAGFA GEVAERT NV·Filed 1985·Granted Aug 12, 1986·7 cites·6 claims
- 3056USD248575SHair dryerPHILIPS CORP·Filed 1976·Granted Jul 18, 1978·4 cites·1 claims
- 3156US3965282AThermographic recording materialAGFA GEVAERT NV·Filed 1975·Granted Jun 22, 1976·13 cites·16 claims
- 3255US5229353AThermal transfer printing with ultra-violet absorbing compoundAGFA GEVAERT NV·Filed 1991·Granted Jul 20, 1993·7 cites·16 claims
- 3354US5571765AThermal dye transfer image with improved light-fastnessAGFA GEVAERT NV·Filed 1994·Granted Nov 5, 1996·4 cites·9 claims
- 3454US5426088ALight-stabilizers for dyes for thermal dye transfer recordingAGFA GEVAERT NV·Filed 1994·Granted Jun 20, 1995·6 cites·11 claims
- 3554US4855211APolymeric phosphonium mordant and photographic element containing the sameAGFA GEVAERT NV·Filed 1988·Granted Aug 8, 1989·6 cites·12 claims
- 3650US5441921AImage receiving element for thermal dye diffusion transferAGFA GEVAERT NV·Filed 1994·Granted Aug 15, 1995·12 cites·6 claims
- 3750US4220710APhotosensitive recording materialsAGFA GEVAERT NV·Filed 1978·Granted Sep 2, 1980·4 cites·13 claims
- 3849US5084435ADye-donor element for use in thermal dye sublimation transferAGFA GEVAERT N W·Filed 1990·Granted Jan 28, 1992·4 cites·5 claims
- 3949US4004926AFormation of azine dyesAGFA GEVAERT NV·Filed 1975·Granted Jan 25, 1977·4 cites·10 claims
- 4048US5122499AThermal dye sublimation transfer printing methodAGFA GEVAERT NV·Filed 1990·Granted Jun 16, 1992·11 cites·13 claims
- 4148USD256170SHair curling tongPHILIPS CORP·Filed 1978·Granted Jul 29, 1980·3 cites·1 claims
- 4247US5082823ACyan dyes for use in thermal dye sublimation transferAGFA GEVAERT NV·Filed 1990·Granted Jan 21, 1992·4 cites·6 claims
- 4347US5037731AOrganic compounds for use in a dye diffusion transfer process and photographic elements incorporating themAGFA GEVAERT NV·Filed 1986·Granted Aug 6, 1991·5 cites·1 claims
- 4445US5432040ADye-donor element for use according to thermal dye sublimation transferAGFA GEVAERT NV·Filed 1993·Granted Jul 11, 1995·3 cites·10 claims
- 4544US5380619APolymeric phosphonium mordant and photographic element containing the sameAGFA GEVAERT NV·Filed 1994·Granted Jan 10, 1995·2 cites·5 claims
- 4644US4777124AAzo dye compounds for use in a dye diffusion transfer process and photographic elements incorporating themAGFA GEVAERT NV·Filed 1987·Granted Oct 11, 1988·4 cites·6 claims
- 4743US5246908ADyes for use in thermal dye transferAGFA GEVAERT NV·Filed 1991·Granted Sep 21, 1993·3 cites·10 claims
- 4842US5510225AThermal dye sublimation transfer donor elementAGFA GEVAERT NV·Filed 1993·Granted Apr 23, 1996·2 cites·16 claims
- 4942US5463045ADyes and dye-donor elements for thermal dye transfer recordingAGFA GEVAERT NV·Filed 1994·Granted Oct 31, 1995·2 cites·2 claims
- 5042US5043316ADye-donor element for use in thermal dye sublimation transferAGFA GEVAERT NV·Filed 1990·Granted Aug 27, 1991·7 cites·7 claims
Showing the top 50 of 83 patent records by PatentIndex Score.
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