Inventor
Rudolf Behn
Inventor
Walsrode, DE
Overview
Patents· 7 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 bonds30%
C02FTreatment of water, waste water, sewage, or sludge25%
D21HPulp compositions25%
C04BLime, magnesia5%
C08LCompositions of macromolecular compounds5%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests5%
Y10TTechnical subjects covered by former us classification5%
PatentTitleYear
4,988,790'Substances for the manufacture of paper'19914,330,441'Solvent-soluble substances characterized in that water-soluble cellulose ethers are chemically bonded to water-soluble, at least predominately synthetic polymers containing acrylic units'19824,267,059'Auxiliary for improving retention, dewatering and working up, particularly in the manufacture of paper'19814,093,605'Auxiliary agent for improving retention, drainage and treatment'19784,052,259'Manufacture and use of water-soluble auxiliary agents based on polyaminoamides for the production of paper'19774,036,821'Manufacture of modified basic polyaminoamide with ammonium compound'19773,945,983'Water soluble copolyamide from (1) polyalkylene polyamine, (2) dicarboxylic acid, (3) diamine or lactam or amino acid and (4) epichlorohydrin'1976Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1976–1991Patents assigned to WOLFF WALSRODE AG (7)· patent assignee history
1976–1991Based in Walsrode, DE· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| WOLFF WALSRODE AG | 7 | 1976–1991 |
Locations
| Location | Patents | Span |
|---|---|---|
| Walsrode, DE | 7 | 1976–1991 |