Inventor
Willi Steckelberg
Inventor
Hofheim, DE
Overview
Patents· 23 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. pigments19%
D06MTreatment, not provided for elsewhere in class d06, of fibres, threads, yarns, fabrics, feathers or fibrous goods made from such materials12%
D06PDyeing or printing textiles12%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests12%
C07CAcyclic or carbocyclic compounds10%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds10%
C09DCoating compositions, e.g. paints, varnishes or lacquers8%
A61KPreparations for medical, dental or toiletry purposes4%
A61QSpecific use of cosmetics or similar toiletry preparations4%
C11DDetergent compositions4%
PatentTitleYear
5,530,093'Polycondensates containing phosphinic and phosphonic acid groups'19965,492,995'Polycondensates containing phosphinic or phosphonic acid groups and siloxane groups'19965,414,128'Process for the preparation of N-substituted nitro-p-phenylenediamines'19955,387,716'N4-substituted 1-alkoxy-2-acylamino-4-aminobenzenes, process for their preparation and their use'19955,383,961'Water-soluble sulphur dyes, their preparation and use'19955,374,302'Water-insoluble sulphur dyes, their preparation and use'19945,368,637'Water-insoluble sulphur dyes, their preparation and use'19945,174,791'Process for dyeing and printing blend fabrics of polyester and natural fibre materials with disperse dye and polyether-polyester to inhibit soilins with disperse dye'19925,110,917'Water-soluble trisazo dyes'19925,037,962'.beta.-modification of 1-(2,4-dinitro-6-chloro-phenylazo)-2-propionylamino-4-N-ethylamino-5-(2- methoxy-ethoxy)benzene, its preparation and its use'19914,918,221'Process for preparing 2,5-dichlorophenylthioglycollic acid'19904,881,977'Water-soluble yellow monoazo dyestuffs'19894,871,754'Aqueous formulation of 1,2-benzisothiazolin-3-one'19894,595,628'Soil repellent fluorinated esters of multi-ring anhydride systems'19864,472,466'Soil repellent fluorinated esters of multi-ring anhydride systems'19844,293,306'Process for the dyeing and printing of hydrophobic synthetic organic fiber materials with water-insoluble azo dyestuffs'19814,134,970'Quaternary ammonium compounds and their use in hair care compositions'19794,118,324'Fabric softeners'19784,100,078'Secondary etheramine acetates and their use as lubricating agents for synthetic fibers'19783,961,885'Process for the dyeing of synthetic fibrous materials from organic solvents using azo dyes'19763,930,794'Process for the dyeing of synthetic fiber materials from organic solvents'19763,930,791'Process for the dyeing of synthetic fibrous material from organic solvents'19763,930,793'Process for the dyeing of synthetic fiber materials from organic solvents'1976Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1976–1996Patents assigned to HOECHST AG (9)· patent assignee history
1976–1996Based in Hofheim, DE· patent location history
1981Based in Coventry, RI, US· patent location history
1984–1986Patents assigned to HOECHST CO AMERICAN (2)· patent assignee history
1984Based in East Greenwich, RI, US· patent location history
1989–1996Patents assigned to CASSELLA FARBWERKE MAINKUR AG (6)· patent assignee history
1990–1995Patents assigned to CASSELLA AG (6)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HOECHST AG | 9 | 1976–1996 |
| CASSELLA AG | 6 | 1990–1995 |
| CASSELLA FARBWERKE MAINKUR AG | 6 | 1989–1996 |
| HOECHST CO AMERICAN | 2 | 1984–1986 |
Locations
| Location | Patents | Span |
|---|---|---|
| Hofheim, DE | 21 | 1976–1996 |
| East Greenwich, RI, US | 1 | 1984 |
| Coventry, RI, US | 1 | 1981 |