Inventor
Hans-Joachim Schaeffer
Inventor
Laatzen, DE
Overview
Patents· 5 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
B30Bprimary
B30BPresses in general33%
B01FMixing, e.g. dissolving, emulsifying or dispersing11%
B29BPreparation or pretreatment of the material to be shaped11%
B29CShaping or joining of plastics11%
D21CProduction of cellulose by removing non-cellulose substances from cellulose-containing materials11%
D21FPaper-making machines11%
F16BDevices for fastening or securing constructional elements or machine parts together, e.g. nails, bolts, circlips, clamps, clips or wedges11%
PatentTitleYear
4,530,761'Extrusion devices'19854,529,232'Cylinder or barrel flange connection'19854,509,419'Worm press for mechanically separating liquid/solid mixtures'19854,404,101'Extraction device for removing liquid from a liquid-solid mixture'19834,047,671'Continuously operable apparatus for the preparation and/or processing of synthetic plastics or rubber moulding compounds'1977Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1977–1985Patents assigned to BERSTORFF GMBH MASCH HERMANN (5)· patent assignee history
1977Based in Latzen, DT· patent location history
1983–1985Based in Laatzen, DE· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| BERSTORFF GMBH MASCH HERMANN | 5 | 1977–1985 |
Locations
| Location | Patents | Span |
|---|---|---|
| Laatzen, DE | 4 | 1983–1985 |
| Latzen, DT | 1 | 1977 |