Inventor · disambiguated record
Lothar Rosenhahn
Also filed as: ROSENHAHN LOTHAR · SOMMER FRIEDHELM
17 granted patents·119 citations·filing 1976–1999
92Inventor score
Top patents by PatentIndex Score
17 records- 0190US6218097B1Color photographic silver halide materialAGFA GEVAERT·Filed 1999·Granted Apr 17, 2001·23 cites·10 claims
- 0283US4603102APhotographic silver halide recording material with cellulose dicarboxylic acid semiester particles in outer layerAGFA GEVAERT AG·Filed 1985·Granted Jul 29, 1986·50 cites·5 claims
- 0375US4067741AHardening photographic layers containing silver halide with a 1-sulphonyl-4-amino-pyridinium saltAGFA GEVAERT AG·Filed 1976·Granted Jan 10, 1978·8 cites·10 claims
- 0466US4055427AProcess of hardening a silver halide photographic material with a 1-carbamoyloxypyridinium saltAGFA GEVAERT AG·Filed 1977·Granted Oct 25, 1977·5 cites·11 claims
- 0563US4414309APhotographic recording material containing an aldehyde removerAGFA GEVAERT AG·Filed 1982·Granted Nov 8, 1983·9 cites·5 claims
- 0660US6207283B1PolymerAGFA GEVAERT·Filed 1998·Granted Mar 27, 2001·4 cites·9 claims
- 0755US5306605APhotographic recording materialAGFA GEVAERT AG·Filed 1993·Granted Apr 26, 1994·5 cites·8 claims
- 0849US6087083AColor photographic materialASFA GEVAERT N V·Filed 1998·Granted Jul 11, 2000·3 cites·9 claims
- 0947US6017689AColor photographic silver halide materialAGFA GEVAERT AG·Filed 1998·Granted Jan 25, 2000·2 cites·2 claims
- 1047US4559296APhotographic recording material containing new azo dyesAGFA GEVAERT AG·Filed 1984·Granted Dec 17, 1985·3 cites·11 claims
- 1140US4210714APhotographic material with improved propertiesAGFA GEVAERT AG·Filed 1978·Granted Jul 1, 1980·2 cites·5 claims
- 1239US6060227AColor negative filmAGFA GEVAERT NV·Filed 1998·Granted May 9, 2000·1 cites·9 claims
- 1335US4052215AColor photographic multilayered material with improved color densityAGFA GEVAERT AG·Filed 1976·Granted Oct 4, 1977·1 cites·3 claims
- 1434US5006457APhotographic recording materialBAYER AG·Filed 1989·Granted Apr 9, 1991·2 cites·2 claims
- 1532US4276373APhotosensitive photographic material containing a light-absorbing dyeAGFA GEVAERT AG·Filed 1980·Granted Jun 30, 1981·1 cites·8 claims
- 1631US6093524AColor photographic filmAGFA GEVAERT NV·Filed 1998·Granted Jul 25, 2000·0 cites·8 claims
- 1729US4358531APhotographic material, process for the production thereof and process for the production of photographic imagesAGFA GEVAERT AG·Filed 1981·Granted Nov 9, 1982·0 cites·8 claims
Join the waitlist — get patent alerts
Get an alert when Lothar Rosenhahn 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 →