Inventor

Hans Pfister

Inventor

Bulach, CH

Overview

1976–1997

Patent span

Chemistry

Primary field (CPC C)

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

C25Cprimary

C25CProcesses for the electrolytic production, recovery or refining of metals24%

E01BPermanent way19%

F15BSystems acting by means of fluids in general10%

A47CChairs5%

B01DSeparation5%

B03CMagnetic or electrostatic separation of solid materials from solid materials or fluids5%

C23CCoating metallic material5%

E01DConstruction of bridges, elevated roadways or viaducts5%

F16BDevices for fastening or securing constructional elements or machine parts together, e.g. nails, bolts, circlips, clamps, clips or wedges5%

G01NInvestigating or analysing materials by determining their chemical or physical properties5%

PatentTitleYear

Assembled from patent assignee/location history and declaration credentials.

1976–1985Patents assigned to SIEMENS AG (2)· patent assignee history

1976–1985Based in Erlangen, DE· patent location history

1980–1981Patents assigned to BALTENSPERGER RUDOLF (4)· patent assignee history

1980–1981Patents assigned to PFISTER HANS BEAT (4)· patent assignee history

1980–1981Based in Bulach, CH· patent location history

1982–1987Patents assigned to ALUSUISSE (5)· patent assignee history

1982–1984Based in Dubendorf, CH· patent location history

1986–1987Based in Duebendorf, CH· patent location history

1991Patents assigned to KOENIG & BAUER AG (1)· patent assignee history

1997Based in Lenzburg, CH· patent location history

Assignee and location history derived from the patent record.

Assignees

Locations