Inventor
Helmut Dillenburg
Inventor
Rheinberg, DE
Overview
Patents· 11 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
Y10Sprimary
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests12%
C01BNon-metallic elements9%
C02FTreatment of water, waste water, sewage, or sludge9%
C01FCompounds of the metals beryllium, magnesium, aluminium, calcium, strontium, barium, radium, thorium, or of the rare-earth metals6%
C11DDetergent compositions6%
Y02WClimate change mitigation technologies related to wastewater treatment or waste management6%
A21DTreatment of flour or dough for baking, e.g. by addition of materials3%
A23CDairy products, e.g. milk, butter or cheese3%
A23DEdible oils or fats, e.g. margarines, shortenings or cooking oils3%
A23GCocoa3%
PatentTitleYear
6,500,400'Process for preparing precipitated calcium carbonates'20026,342,100'Bimolecular coated calcium carbonate and process of production thereof'20025,904,944'Use of polyglycerol for processing foodstuff'19995,648,067'Cosmetic deodorant preparation containing di- or triglycerin esters'19975,478,472'Process for treating waste water containing organic and inorganic compounds'19955,445,741'Process for treating waste water'19955,393,428'Process for treating waste water containing chlorinated organic compounds from production of epichlorohydrin'19955,243,086'Process for the preparation of diglycerol and/or polyglycerol'19934,427,644'Process for the preparation of bivalent metal peroxides'19844,179,394'Process for improving the storage stability of alkali persalts'19794,117,087'Process for preparing stabilized sodium percarbonate'1978Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1978–1984Patents assigned to PEROXID CHEMIE GMBH (3)· patent assignee history
1978–1984Based in Rheinbrohl, DE· patent location history
1993–2002Based in Rheinberg, DE· patent location history
1995Patents assigned to SOLVAY DEUTSCHLAND (3)· patent assignee history
1997Patents assigned to BEIERSDORF AG (1)· patent assignee history
1999Patents assigned to SOLVAY ALKALI GMBH (1)· patent assignee history
2002Patents assigned to SOLVAY SODA DEUTSCHLAND GMBH (2)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| PEROXID CHEMIE GMBH | 3 | 1978–1984 |
| SOLVAY DEUTSCHLAND | 3 | 1995 |
| SOLVAY SODA DEUTSCHLAND GMBH | 2 | 2002 |
| BEIERSDORF AG | 1 | 1997 |
| SOLVAY ALKALI GMBH | 1 | 1999 |
Locations
| Location | Patents | Span |
|---|---|---|
| Rheinberg, DE | 8 | 1993–2002 |
| Rheinbrohl, DE | 3 | 1978–1984 |