Inventor · disambiguated record
Leon L. Vermeulen
Also filed as: VERMEULEN LEON · VERMEULEN LEON L · VERMEULEN LEON LOUIS
29 granted patents·1 pending application·322 citations·filing 1974–2003
97Inventor score
Top patents by PatentIndex Score
30 records- 0189US4720447ASilver salt diffusion transfer reversal processAGFA GEVAERT NV·Filed 1986·Granted Jan 19, 1988·24 cites·9 claims
- 0288US5340692AImage receiving material with nacreous pigment for producing contone images according to the silver salt diffusion transfer processAGFA GEVAERT NV·Filed 1993·Granted Aug 23, 1994·17 cites·8 claims
- 0387US5213648AMethod of producing a tamper-proof laminate and product obtained therebyAGFA GEVAERT NV·Filed 1991·Granted May 25, 1993·17 cites·18 claims
- 0486US5824447AApparatus for security printing using toner particlesAGFA GEVAERT NV·Filed 1997·Granted Oct 20, 1998·42 cites·13 claims
- 0580US5194347AImage-receiving material comprising subbed polycarbonate or polypropyleneAGFA GEVAERT NV·Filed 1991·Granted Mar 16, 1993·12 cites·12 claims
- 0680US4992130AProcess for the production of a laminateAGFA GEVAERT·Filed 1989·Granted Feb 12, 1991·15 cites·11 claims
- 0780US4033770AProduction of adhesive transfers by diffusion transferAGFA GEVAERT NV·Filed 1975·Granted Jul 5, 1977·17 cites·23 claims
- 0868US4859565ADiffusion transfer reversal processAGFA GEVAERT NV·Filed 1988·Granted Aug 22, 1989·10 cites·7 claims
- 0966US4762759AImage-receiving material with siloxane, colloidal silica and gelatin for silver complex diffusion transferAGFA GEVAERT NV·Filed 1986·Granted Aug 9, 1988·9 cites·16 claims
- 1066US4144064APhotographic material for use in the silver complex diffusion transfer processAGFA GEVAERT NV·Filed 1977·Granted Mar 13, 1979·17 cites·3 claims
- 1164US6821719B2Process for producing a deformed image without significant image degradationAGFA GEVAERT·Filed 2003·Granted Nov 23, 2004·2 cites·17 claims
- 1263US5753352ALaminated security document containing fluorescent dye giving light pipingAGFA GEVAERT NV·Filed 1996·Granted May 19, 1998·27 cites·11 claims
- 1363US4242436APhotographic material for continuous tone reproductionAGFA GEVAERT NV·Filed 1978·Granted Dec 30, 1980·7 cites·5 claims
- 1460US5880760AMethod and device for printing information on substrates having security featuresAGFA GEVAERT·Filed 1997·Granted Mar 9, 1999·15 cites·18 claims
- 1558US6818390B2Deformable color photographic silver halide materialAGFA GEVAERT·Filed 2003·Granted Nov 16, 2004·1 cites·19 claims
- 1658US5158641AHeat-laminating apparatusAGFA GEVAERT NV·Filed 1991·Granted Oct 27, 1992·31 cites·5 claims
- 1756US4686170APhotographic silver complex diffusion transfer reversal process under yellow safelightAGFA GEVAERT NV·Filed 1986·Granted Aug 11, 1987·7 cites·10 claims
- 1854US5200295AMethod for the production of a silver imageAGFA GEVAERT NV·Filed 1991·Granted Apr 6, 1993·4 cites·20 claims
- 1954US5004659ADye image receiving materialAGFA GEVAERT NV·Filed 1990·Granted Apr 2, 1991·4 cites·11 claims
- 2045US3985561ADiffusion transfer process using silver halide emulsions with 90% chloride and high binder to silver halide ratiosAGFA GEVAERT NV·Filed 1974·Granted Oct 12, 1976·8 cites·7 claims
- 2144US4224402APhotographic material for use in the silver complex diffusion transfer processAGFA GEVAERT NV·Filed 1978·Granted Sep 23, 1980·3 cites·16 claims
- 2242US3989521AProduction of planographic printing patterns on aluminum sheets using solutions containing dicarboxylic acid compoundsAGFA GEVAERT NV·Filed 1975·Granted Nov 2, 1976·7 cites·6 claims
- 2337US4902593ADye image receiving materialAGFA GEVAERT NV·Filed 1988·Granted Feb 20, 1990·6 cites·10 claims
- 2437US2004161712A1Deformable colour photographic silver halide materialAGFA GEVAERT·Filed 2003·Application pending·0 cites
- 2536US4808509ADiffusion transfer imaging method and receptor sheet for making personal identification documentsAGFA GEVAERT NV·Filed 1987·Granted Feb 28, 1989·7 cites·6 claims
- 2635US4908286AImage-receiving material for use in diffusion transfer reversalAGFA GEVAERT NV·Filed 1989·Granted Mar 13, 1990·4 cites·13 claims
- 2735US4357407AProduction of reverse reading positive images of a straight reading originalAGFA GEVAERT NV·Filed 1981·Granted Nov 2, 1982·2 cites·7 claims
- 2834US4772536ADye image receiving materialAGFA GEVAERT NV·Filed 1987·Granted Sep 20, 1988·2 cites·4 claims
- 2932US4635133APhotographic method for the production of documentsAGFA GEVAERT NV·Filed 1984·Granted Jan 6, 1987·3 cites·11 claims
- 3031US5043245AProcess for the production of a laminated articleAGFA GEVAERT NV·Filed 1990·Granted Aug 27, 1991·2 cites·10 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →