Inventor

Johannes P. Dix

Inventor

Neuhofen, DE

Overview

32→

Patents

1983–2002

Patent span

Chemistry

Primary field (CPC C)

Patents· 32 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

C09Bprimary

C09BOrganic dyes or closely-related compounds for producing dyes, e.g. pigments26%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests14%

D06PDyeing or printing textiles11%

C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds7%

C14CChemical treatment of hides, skins or leather, e.g. tanning, impregnating, finishing4%

C07CAcyclic or carbocyclic compounds3%

C07DHeterocyclic compounds3%

C09DCoating compositions, e.g. paints, varnishes or lacquers3%

C09KMaterials for miscellaneous applications, not provided for elsewhere3%

C10MLubricating compositions3%

PatentTitleYear

6,336,942'Processes of treating leather and skins employing polymer compositions'2002 6,080,209'Stable colorant compositions'2000 5,972,050'Dye mixtures containing polyazo dyes and CI Sulphur Black 1 dye'1999 5,750,742'Oligomeric triarylmethane dyes'1998 5,534,166'Preparation of condensates of arenesulfonic acids and formaldehyde and use thereof'1996 5,491,043'Electrostatic toners with polyamine charge stabilizers'1996 5,411,556'Dyeing leather with a red azo dye'1995 5,393,463'Use of trialkanolamine polyethers as demulsifiers for oil-in-water emulsions'1995 5,389,110'Azo dyes and process of dyeing with azo dyes which contain an N-(hydroxysulfonylphenylalkyl)pyridone coupling component'1995 5,360,454'Tanning of leather and fur'1994 5,298,635'Tertiary amides useful as low-foam wetting agents in the textile industry'1994 5,264,560'Preparation of quaternized azo dyes'1993 5,234,626'Methods of demulsifying employing condensates as demulsifiers for oil-in water emulsions'1993 5,224,963'Quaternized condensation products for aftertreating dyed leather'1993 5,186,846'Dye dispersants: aryl sulphonic acid-formaldehyde condensate or ligninsulfonate'1993 5,124,438'Chemically modified proteins and colorant formulations containing the same'1992 5,073,634'Tetrachloroferrates of basic dyes'1991 5,015,754'Quaternized condensation products of trialkanolamines'1991 4,997,680'Polymeric conditioner for pretreating nonmetallic surfaces for chemical metallization'1991 4,976,744'Preparation of concentrated solutions of cationic dyes as mono-carboxylates in glycol ether'1990 4,940,609'Polymeric conditioner for pretreating nonmetallic surfaces for chemical metallization'1990 4,940,492'Colorant mixtures containing isoquinoline derivatives, use thereof in printing inks, and novel isoquinoline derivatives'1990 4,912,791'Pretreatment of textile materials: alkaline scour or bleach with organo-phosphorus compound'1990 4,908,437'Thien-2-one compounds with an alkylidene or imino group in the 5-position of the ring'1990 4,880,769'Transfer of catinic dyes in their deprotonated, electrically neutral form'1989 4,764,600'Isothiazolylazo dyes having aminophenyl and aminonaphthyl components'1988 4,656,256'Benzoazoresorcinol dyes containing a quaternized aminoalkylene oxycarbonyl group'1987 4,619,992'3-(.beta.-aminoethyl)-4-cyano-isothiazolylazo dyes'1986 4,521,216'Disazo dyes'1985 4,496,480'Isothiazolazo dyes having coupling components which are free from unsaturated aliphatic radicals'1985 4,464,181'Mixtures of benzisothiazole mono-azo dyes for cellulose acetate'1984 4,367,072'Ligands assayed by host molecules including cyclophanes, crown ethers, crypstands and podands'1983

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1983Patents assigned to BOEHRINGER MANNHEIM GMBH (1)· patent assignee history

1983Based in Bonn-Beuel, DE· patent location history

1984–2002Patents assigned to BASF AG (31)· patent assignee history

1984–1996Based in Neuhofen, DE· patent location history

1991–2002Based in Weisenheim, DE· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
BASF AG	31	1984–2002
BOEHRINGER MANNHEIM GMBH	1	1983

Locations

Location	Patents	Span
Neuhofen, DE	16	1984–1996
Weisenheim, DE	15	1991–2002
Bonn-Beuel, DE	1	1983