Inventor · disambiguated record
Helmut Zangenfeind
Also filed as: ZANGENFEIND HELMUT
19 granted patents·158 citations·filing 1976–1996
94Inventor score
Top patents by PatentIndex Score
19 records- 0185US4094726AApparatus for processing exposed photographic films and cassettes for such filmsAGFA GEVAERT AG·Filed 1976·Granted Jun 13, 1978·16 cites·20 claims
- 0282US4046614ASplicing apparatus for photographic films or the likeAGFA GEVAERT AG·Filed 1976·Granted Sep 6, 1977·15 cites·14 claims
- 0378US4073588AApparatus for applying indicia to films and envelopes in photographic processing laboratoriesAAGFA GEVAERT A G·Filed 1976·Granted Feb 14, 1978·19 cites·28 claims
- 0464US5154410AApparatus for straightening and stacking envelopes for photosensitive materialsAGFA GEVAERT AG·Filed 1990·Granted Oct 13, 1992·31 cites·8 claims
- 0554US4888613AMethod of and apparatus for processing exposed photographic filmsAGFA GEVAERT AG·Filed 1988·Granted Dec 19, 1989·14 cites·26 claims
- 0653US5279696AApparatus for reading and processing encoded information of uniting bands for webs of photographic materialAGFA GEVAERT AG·Filed 1989·Granted Jan 18, 1994·16 cites·16 claims
- 0749US4732278AApparatus for transporting cartridge for exposed roll filmAGFA GEVAERT AG·Filed 1985·Granted Mar 22, 1988·12 cites·29 claims
- 0843US5842077ADevice for the automatic removal of a photographic film from a cartridgeAGFA GEVAERT AG·Filed 1996·Granted Nov 24, 1998·1 cites·17 claims
- 0943US5708905ADevice for automatic removal of a photographic film from a cartridgeAGFA GEVAERT AG·Filed 1996·Granted Jan 13, 1998·2 cites·20 claims
- 1042US4621970AApparatus for removing reels with exposed roll films from cartridgesAGFA GEVAERT AG·Filed 1985·Granted Nov 11, 1986·9 cites·20 claims
- 1138US5781819ADevice for feeding film cartridgesAGFA GEVAERT AG·Filed 1996·Granted Jul 14, 1998·1 cites·17 claims
- 1238US4643371AApparatus for unwinding exposed roll films from reelsAGFA GEVAERT AG·Filed 1985·Granted Feb 17, 1987·7 cites·21 claims
- 1336US4004724AApparatus for removing exposed films and backing strips from containersAGFA GEVAERT AG·Filed 1976·Granted Jan 25, 1977·3 cites·16 claims
- 1435US6000861AMethod of and device for testing a photographic filmAGFA GEVAERT AG·Filed 1996·Granted Dec 14, 1999·0 cites·13 claims
- 1535US4282997AApparatus for removing exposed films and backing strips from cassettesAGFA GEVAERT AG·Filed 1979·Granted Aug 11, 1981·1 cites·3 claims
- 1631US4894675AApparatus for splicing together undeveloped customer films in a darkroomAGFA GEVAERT AG·Filed 1988·Granted Jan 16, 1990·5 cites·33 claims
- 1731US4360138AApparatus for removing exposed films and backing strips from cassettesAGFA GEVAERT AG·Filed 1981·Granted Nov 23, 1982·1 cites·2 claims
- 1830US4799076AApparatus for affording access to exposed but undeveloped films in a dark chamberAGFA GEVAERT AG·Filed 1987·Granted Jan 17, 1989·3 cites·15 claims
- 1926US4087033AApparatus for opening film cassettesAGFA GEVAERT AG·Filed 1976·Granted May 2, 1978·2 cites·11 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →