Inventor
Otmar Hafner
Inventor
Glashutten, DE
Overview
Patents· 4 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. pigments21%
C09DCoating compositions, e.g. paints, varnishes or lacquers21%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds11%
C08JWorking-up11%
C09CTreatment of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties11%
C09KMaterials for miscellaneous applications, not provided for elsewhere11%
C01PIndexing scheme relating to structural and physical aspects of solid inorganic compounds5%
C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients5%
Y10TTechnical subjects covered by former us classification5%
PatentTitleYear
5,070,159'Addition compounds, a process for the preparation, and their use, based on epoxy novolac-fatty amine adducts'19915,066,687'Powdered azo pigments with improved rheological properties, process for their preparation and their use'19914,732,618'Powdered pigments with improved rheological properties, processes for their preparation and their use with a content of at least 5% of unsubstituted quinacridone'19884,631,330'Addition compounds and process for their preparation'1986Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1986–1991Patents assigned to HOECHST AG (4)· patent assignee history
1986–1991Based in Glashutten, DE· patent location history
1991Based in Taunus, DE· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HOECHST AG | 4 | 1986–1991 |
Locations
| Location | Patents | Span |
|---|---|---|
| Glashutten, DE | 3 | 1986–1991 |
| Taunus, DE | 1 | 1991 |