Inventor
Peter Seifert
Inventor
Middletown, OH, US
Overview
Patents· 46 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
D21Dprimary
D21DTreatment of the materials before passing to the paper-making machine18%
B01DSeparation9%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds9%
D21FPaper-making machines9%
D21CProduction of cellulose by removing non-cellulose substances from cellulose-containing materials7%
B07BSeparating solids from solids by sieving, screening, sifting or by using gas currents5%
C08JWorking-up4%
D21BFibrous raw materials or their mechanical treatment4%
Y02WClimate change mitigation technologies related to wastewater treatment or waste management4%
B30BPresses in general3%
PatentTitleYear
9,428,363'Winding system having at least one winding device'20168,518,134'Method and device for the entrained-flow gasification of solid fuels under pressure'20136,989,406'Polyurea polyrethanes having improved physical properties'20066,802,871'Composition for pretreating fiber materials'20046,734,217'Flame resistant HR cold-moulded foam with a reduced fume density and toxicity'20046,595,373'Wedge wire and paper stock screening apparatus incorporating such wedge wire'20036,590,007'Flame-resistant hr cold-moulded foam with reduced fume density and toxicity'20036,193,073'Paper stock screening apparatus and method'20016,120,648'Apparatus for pulping and deinking'20005,762,756'Methods and apparatus for pulping and deinking'19985,644,238'Method and apparatus for comparing load current in an electrical circuit with the capacity of its supply source'19975,591,336'Apparatus for dewatering and or washing papermaking stock'19975,582,686'High pressure water jet comminuting'19965,382,327'Apparatus for thickening pulp and paper stock'19955,367,894'Apparatus and method for washing cellulosic pulp'19945,262,003'Method and system for defibering paper making materials'19935,234,172'High pressure water jet comminuting'19935,221,437'Screening apparatus for paper making stock'19935,189,775'Zone controlled deflection compensated roll'19935,186,791'Apparatus for thickening pulp and paper stock'19935,122,229'Apparatus and method for washing cellulosic pulp'19925,078,275'Screening apparatus for paper making stock'19924,722,793'Apparatus and method for thickening pulp and paper stock'19884,668,734'Stable dispersions of polyureas and/or polyhydrazo-dicarbonamides in relatively high molecular weight hydroxyl-group containing materials, a process for the production thereof and the use thereof for the production of polyurethane plastics'19874,430,453'Polyurethane foams suitable for high frequency welding and process for producing the same'19844,427,798'Solutions of oligo-urethane ethers in polyether polyols and their use in a process for the production of polyurethane foams'19844,410,424'Screening apparatus for paper making stock'19834,400,331'Dialkoxy-phosphonyl-N-alkyl-formic acid amides'19834,383,918'High turbulence screen'19834,371,630'Solution of a polyurethane in a polyol and a process for using such a solution in the production of polyurethane plastics'19834,328,321'Dialkoxy-phosphonyl-N-alkyl-formic acid amides and their use as additives for the production of polyurethane foams which are capable of being flame laminated and high frequency welded'19824,328,096'Dual flow screening apparatus'19824,323,657'Dispersions of high melting polyesters in polyhydroxyl compounds, a process for their preparation and their use in the production of polyurethanes'19824,306,037'Process for the manufacture of elastic polyurethane foams capable of being flame laminated and high frequency welded'19814,171,101'Method of operating a disk refiner provided with reversible refining plates'1979RE030011'Defibering apparatus for paper making stock'19794,155,839'Reverse centrifugal cleaning of paper making stock'19794,155,841'High turbulence screen'19794,106,980'Thickener apparatus including a shaftless cylinder mold'19784,105,543'Method for screening paper fiber stock'19784,099,458'Cone press'19784,081,147'Reversible disk refiner plates'19783,970,548'Apparatus for screening paper fiber stock'19763,960,332'Defibering apparatus for paper making stock'19763,948,165'Cone press'1976RE028677'Waste treatment system'1976Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1976–1998Patents assigned to BLACK CLAWSON CO (26)· patent assignee history
1976–2003Based in Middletown, OH, US· patent location history
1981–2006Patents assigned to BAYER AG (11)· patent assignee history
1981–1984Based in Bergisch Gladbach, DE· patent location history
2000–2001Patents assigned to THERMO BLACK CLAWSON INC (2)· patent assignee history
2003–2006Based in Lohmar, DE· patent location history
2004Patents assigned to CIBA SC HOLDING AG (1)· patent assignee history
2013Based in Groβräschen, DE· patent location history
2016Patents assigned to DIETZE + SCHELL MASCHF GMBH & CO KG (1)· patent assignee history
2016Based in Coburg, DE· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| BLACK CLAWSON CO | 26 | 1976–1998 |
| BAYER AG | 11 | 1981–2006 |
| THERMO BLACK CLAWSON INC | 2 | 2000–2001 |
| CIBA SC HOLDING AG | 1 | 2004 |
| DIETZE + SCHELL MASCHF GMBH & CO KG | 1 | 2016 |
Locations
| Location | Patents | Span |
|---|---|---|
| Middletown, OH, US | 31 | 1976–2003 |
| Bergisch Gladbach, DE | 7 | 1981–1984 |
| Lohmar, DE | 3 | 2003–2006 |
| Coburg, DE | 1 | 2016 |
| Groβräschen, DE | 1 | 2013 |