Inventor · disambiguated record
Hans-Heinrich Credner
Also filed as: CREDNER HANS-HEINRICH
15 granted patents·76 citations·filing 1974–1996
91Inventor score
Top patents by PatentIndex Score
15 records- 0186US4052213ALight-sensitive photographic materialAGFA GEVAERT AG·Filed 1976·Granted Oct 4, 1977·17 cites·7 claims
- 0277US4123281APhotographic silver halide color material containing fast-acting hardener and 2-pyrazolin-5-one coupler precursorsAGFA GEVAERT NV·Filed 1976·Granted Oct 31, 1978·9 cites·8 claims
- 0376US4198239AColor photographic materials containing an antistain agentAGFA GEVAERT AG·Filed 1977·Granted Apr 15, 1980·12 cites·2 claims
- 0471US4175968AColor photographic materials containing anti-fogging agentsAGFA GEVAERT AG·Filed 1978·Granted Nov 27, 1979·9 cites·4 claims
- 0568US4369243APhotographic recording material for diffusion processes and useful non-diffusing sulfilimine compoundsAGFA GEVAERT AG·Filed 1981·Granted Jan 18, 1983·11 cites·13 claims
- 0652US4062683APhotographic material containing 3-anilino-5-pyrazolylalkylcarbonate or arylcarbonate couplersAGFA GEVAERT NV·Filed 1976·Granted Dec 13, 1977·5 cites·5 claims
- 0738US4061498APhotographic material containing 2-acyl-2-pyrazolin-5-on-couplersAGFA GEVAERT NV·Filed 1976·Granted Dec 6, 1977·4 cites·2 claims
- 0835US4444867APhotographic recording material for diffusion processes and new non-diffusing sulfilimine compounds suitable for use thereinAGFA GEVAERT AG·Filed 1983·Granted Apr 24, 1984·1 cites·6 claims
- 0935US4059447APhotographic material containing oxazolinone-2 couplersAGFA GEVAERT AG·Filed 1975·Granted Nov 22, 1977·1 cites·9 claims
- 1034US5415929AMagnetic recording medium having a magnetic layer prepared from magnetic particles using specified dispersants which enhance the electrostatic change on the magnetic pigment surfaceBASF MAGNETICS GMBH·Filed 1993·Granted May 16, 1995·2 cites·4 claims
- 1133US4275200AProcess for the production of oxazolinone-2-compoundsAGFA GEVAERT AG·Filed 1978·Granted Jun 23, 1981·1 cites·11 claims
- 1231US4981719AProcess for the production of a magnetic recording materialAGFA GEVAERT AG·Filed 1989·Granted Jan 1, 1991·2 cites·8 claims
- 1330US3941601APhotographic silver halide material which contains color couplersAGFA GEVAERT AG·Filed 1974·Granted Mar 2, 1976·1 cites·2 claims
- 1425US5660760AMagnetic coating dispersionBASF MAGNETICS GMBH·Filed 1996·Granted Aug 26, 1997·0 cites·6 claims
- 1524US5256497AMagnetic tape containing abrasivesBASF MAGNETICS GMBH·Filed 1991·Granted Oct 26, 1993·1 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →