Inventor
Freddy Helmer-Metzmann
Inventor
Mainz, DE
Overview
Patents· 17 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C08Gprimary
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds16%
B01DSeparation14%
H01MProcesses or means, e.g. batteries, for the direct conversion of chemical energy into electrical energy13%
Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution11%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests9%
C08JWorking-up8%
Y02PClimate change mitigation technologies in the production or processing of goods8%
C08LCompositions of macromolecular compounds6%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry5%
C02FTreatment of water, waste water, sewage, or sludge5%
PatentTitleYear
6,818,590'Method for absorbing contaminants'20046,383,396'Method for absorbing contaminants'20026,239,187'Polymer foams'20016,214,488'Polymer electrolyte membrane and process for the production thereof'20016,132,622'Absorbents'20006,096,856'Polymer electrolytes and process for their production'20006,063,949'Stereorigid metallocene compound'20005,853,911'Electrochemical cell'19985,834,566'Homogeneous polymer alloys based on sulfonated aromatic polyetherkeytones'19985,741,408'Polymer electrolyte membrane for use in fuel cells and electrolysis cells'19985,656,389'Electrochemical cell'19975,561,202'Polymer electrolyte membrane, and process for the production thereof'19965,510,424'Homogeneous polymer alloys based on sulfonated aromatic polyether ketones'19965,505,851'Semipermeable membranes of homogeneously miscible polymer alloys'19965,438,082'Polymer electrolyte membrane, and process for the production thereof'19955,373,081'Polyether ketones and polyether sulfones based on phenylindane, and the use thereof for optical systems'19945,362,836'Polymer electrolytes and their preparation'1994Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1994–2001Patents assigned to HOECHST AG (11)· patent assignee history
1994–2001Based in Mainz, DE· patent location history
2000–2004Patents assigned to TICONA GMBH (4)· patent assignee history
2000–2002Patents assigned to MITSUI PETROCHEMICAL IND (2)· patent assignee history
2000Patents assigned to HOECHST RES & TECH GMBH & CO (1)· patent assignee history
2000Patents assigned to TARGOR GMBH (1)· patent assignee history
2000–2004Based in Essenheim, DE· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HOECHST AG | 11 | 1994–2001 |
| TICONA GMBH | 4 | 2000–2004 |
| MITSUI PETROCHEMICAL IND | 2 | 2000–2002 |
| HOECHST RES & TECH GMBH & CO | 1 | 2000 |
| TARGOR GMBH | 1 | 2000 |
Locations
| Location | Patents | Span |
|---|---|---|
| Mainz, DE | 11 | 1994–2001 |
| Essenheim, DE | 6 | 2000–2004 |