Inventor · disambiguated record
Heinrich Volk
Also filed as: VOLK HEINRICH
36 granted patents·304 citations·filing 1975–1999
97Inventor score
Files withHOECHST AG13ESSELTE METO INT GMBH12ESSELTE PENDAFLEX CORP8CLARIANT GMBH1ESSELTE METO INT PRODUKTIONS GMBH1
Top patents by PatentIndex Score
36 records- 0192US5344248AFramework for portable printersESSELTE METO INT GMBH·Filed 1991·Granted Sep 6, 1994·119 cites·30 claims
- 0273US5594145AProcess for the preparation of 2(3H)-benzothiazolonesHOECHST AG·Filed 1994·Granted Jan 14, 1997·15 cites·24 claims
- 0372US5374737AProcess for the preparation of 2-aminobenzothiazolesHOECHST AG·Filed 1993·Granted Dec 20, 1994·14 cites·19 claims
- 0468USD272365SLabelling apparatusESSELTE PENDAFLEX CORP·Filed 1981·Granted Jan 24, 1984·10 cites·1 claims
- 0567US4113759AMetal-containing disazomethine compounds, process for preparing them and their use as colorantsHOECHST AG·Filed 1977·Granted Sep 12, 1978·6 cites·8 claims
- 0663US4064349ANovel 2-hydroxynaphthalene-1-aldehydes, process for preparing them and their useHOECHST AG·Filed 1976·Granted Dec 20, 1977·5 cites·4 claims
- 0761US6057478AProcess for preparing arylhydrazinesCLARIANT GMBH·Filed 1999·Granted May 2, 2000·7 cites·11 claims
- 0860US4916257AProcess for the purification of 2-hydroxynaphthalene-6-carboxylic acidHOECHST AG·Filed 1989·Granted Apr 10, 1990·6 cites·9 claims
- 0959US4271759APrinting apparatus for use with price labeller or the likeESSELTE PENDAFLEX CORP·Filed 1979·Granted Jun 9, 1981·13 cites·17 claims
- 1057US4308797AApparatus for printing or applying self-adhesive labelsESSELTE PENDAFLEX CORP·Filed 1979·Granted Jan 5, 1982·12 cites·24 claims
- 1157US4157265AWater-insoluble disazomethine mixed metal-complex compounds, process for preparing them and their use as colorantsHOECHST AG·Filed 1978·Granted Jun 5, 1979·4 cites·13 claims
- 1257US4042611AWater-in-soluble disazo methine compoundsHOECHST AG·Filed 1975·Granted Aug 16, 1977·4 cites·8 claims
- 1354US4110375ANovel 2-hydroxynaphthalene-1-aldehydes, process for preparing them and their useHOECHST AG·Filed 1977·Granted Aug 29, 1978·3 cites·3 claims
- 1451US4097510AWater-insoluble nickel-complex disazo methine compoundsHOECHST AG·Filed 1975·Granted Jun 27, 1978·3 cites·1 claims
- 1550US4618701AProcess for preparing 6-acetoxy-2-naphthoic-acid and pure 6-hydroxy-2-naphthoic acidHOECHST AG·Filed 1985·Granted Oct 21, 1986·4 cites·24 claims
- 1648US5782469AStacking device for card-shaped productsESSELTE METO INT GMBH·Filed 1996·Granted Jul 21, 1998·9 cites·26 claims
- 1746USD365597SHand held labelerESSELTE METO INT PRODUKTIONS GMBH·Filed 1993·Granted Dec 26, 1995·6 cites·1 claims
- 1845US5756757AProcess for the preparation of 3-hydroxy-N-benzimidazolon-5-yl-2-naphthamide in the high purity required of azo pigmentsHOECHST AG·Filed 1995·Granted May 26, 1998·3 cites·18 claims
- 1945US5597441APortable hand-held labelling and marking device and printing mechanism housing thereforESSELTE METO INT GMBH·Filed 1995·Granted Jan 28, 1997·11 cites·18 claims
- 2044US5258090AHand-held portable labelling device and the inking roller mounting thereforESSELTE METO INT GMBH·Filed 1992·Granted Nov 2, 1993·10 cites·20 claims
- 2142US4679500APrinter with plural endless bands and stop means thereforESSELTE METO INT GMBH·Filed 1985·Granted Jul 14, 1987·8 cites·4 claims
- 2242US4096800ADetent device for a key shaft of a printing mechanismMETO INTERNATIONAL GMBH·Filed 1977·Granted Jun 27, 1978·7 cites·5 claims
- 2335US4744295ASetting mechanism for endless band printing deviceESSELTE METO INT GMBH·Filed 1986·Granted May 17, 1988·4 cites·18 claims
- 2435US4415750AProcess for separation of 2-hydroxynapthalene-3-carboxylic acid from the reaction mixtures of alkali metal salts of 2-hydroxynaphthalene and carbon dioxideHOECHST AG·Filed 1982·Granted Nov 15, 1983·2 cites·5 claims
- 2533US4586432ASetting means for printer with plural endless bandsESSELTE PENDAFLEX CORP·Filed 1985·Granted May 6, 1986·3 cites·4 claims
- 2633US4583457APrinter with plural endless bands and setting means thereforeESSELTE PENDAFLEX CORP·Filed 1985·Granted Apr 22, 1986·3 cites·5 claims
- 2733US4450036APortable labeling machineESSELTE PENDAFLEX CORP·Filed 1982·Granted May 22, 1984·3 cites·4 claims
- 2832US5639340APortable hand-held labelling and marking device and printing mechanism thereforESSELTE METO INT GMBH·Filed 1995·Granted Jun 17, 1997·3 cites·20 claims
- 2932US4521617AProcess for preparing pure alkyl 1-hydroxy-2-naphthoatesHOECHST AG·Filed 1984·Granted Jun 4, 1985·0 cites·1 claims
- 3031US4802409APrinting mechanism with torque limiting detent elements on actuating knobESSELTE METO INT GMBH·Filed 1986·Granted Feb 7, 1989·2 cites·13 claims
- 3131US4618393AHand labeling deviceESSELTE PENDAFLEX CORP·Filed 1985·Granted Oct 21, 1986·2 cites·6 claims
- 3230US4951565APrinting mechanism with torque limiting detent elements on actuating knobESSELTE METO INT GMBH·Filed 1986·Granted Aug 28, 1990·1 cites·4 claims
- 3330US4583456APrinting mechanismESSELTE PENDAFLEX CORP·Filed 1985·Granted Apr 22, 1986·0 cites·5 claims
- 3422US4809603ASetting mechanism for selective printing memberESSELTE METO INT GMBH·Filed 1986·Granted Mar 7, 1989·2 cites·13 claims
- 3522US4726290APrinting band, in particular for price marking devicesESSELTE METO INT GMBH·Filed 1986·Granted Feb 23, 1988·0 cites·2 claims
- 3618US4694745APrinted band, in particular for price marking devicesESSELTE METO INT GMBH·Filed 1985·Granted Sep 22, 1987·0 cites·13 claims
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